Articles | Volume 19, issue 17
https://doi.org/10.5194/acp-19-11213-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-19-11213-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
04 Sep 2019
Research article |
| 04 Sep 2019
| 04 Sep 2019
Chemical and optical properties of carbonaceous aerosols in Nanjing, eastern China: regionally transported biomass burning contribution
Xiaoyan Liu
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Forestry and Environmental Studies, Yale University, New
Haven 06511, USA
Yan-Lin Zhang
CORRESPONDING AUTHOR
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
Yiran Peng
Ministry of Education Key Laboratory for Earth System Modeling,
Department of Earth System Science, Tsinghua University, Beijing 100084, China
Joint Center for Global Change Studies (JCGCS), Beijing 100084, China
Lulu Xu
Ministry of Education Key Laboratory for Earth System Modeling,
Department of Earth System Science, Tsinghua University, Beijing 100084, China
Joint Center for Global Change Studies (JCGCS), Beijing 100084, China
Chunmao Zhu
Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama 236-0001, Japan
Fang Cao
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
Xiaoyao Zhai
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
M. Mozammel Haque
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
Chi Yang
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
Yunhua Chang
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
Tong Huang
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
Zufei Xu
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
Mengying Bao
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
Wenqi Zhang
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
Meiyi Fan
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
Xuhui Lee
Yale-NUIST Center on Atmospheric Environment, Joint International
Research Laboratory of Climate and Environment Change (ILCEC), Nanjing
University of Information Science and Technology, Nanjing 210044, China
Key Laboratory of Meteorological Disaster Ministry of Education
(KLME), Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Applied Meteorology, Nanjing University of Information
Science and Technology, Nanjing 210044, China
School of Forestry and Environmental Studies, Yale University, New
Haven 06511, USA
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Tong Sha, Xiaoyan Ma, Jun Wang, Rong Tian, Jianqi Zhao, Fang Cao, and Yan-Lin Zhang
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Yugo Kanaya, Kazuyo Yamaji, Takuma Miyakawa, Fumikazu Taketani, Chunmao Zhu, Yongjoo Choi, Yuichi Komazaki, Kohei Ikeda, Yutaka Kondo, and Zbigniew Klimont
Atmos. Chem. Phys., 20, 6339–6356, https://doi.org/10.5194/acp-20-6339-2020, https://doi.org/10.5194/acp-20-6339-2020, 2020
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Fundamental disagreements among bottom-up emission inventories exist about the sign of the black carbon emissions trend from China over the past decade. Our decadal observations on Fukue Island clearly indicate its rapid reduction, after correcting for interannual meteorological variability, which supports inventories reflecting governmental clean air actions after 2010. The reduction pace surpasses those of SSP1 scenarios for 2015–2030, suggesting highly successful emission control policies.
Yu-Chi Lin, Yan-Lin Zhang, Mei-Yi Fan, and Mengying Bao
Atmos. Chem. Phys., 20, 3999–4011, https://doi.org/10.5194/acp-20-3999-2020, https://doi.org/10.5194/acp-20-3999-2020, 2020
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(1) Nitrate was a dominant contributing species in water-soluble inorganic ions during the high PM2.5 events in Nanjing.
(2) Nitrate aerosols in Nanjing during the PM2.5 events were mainly produced by hydrolysis of N2O5 in preexisting aerosols under ammonium-rich regimes.
(3) Control in NOx emissions would inhibit production of nitrate aerosols since NH4NO3 formation was HNO3 limited in Nanjing.
Jing Wei, Zhanqing Li, Maureen Cribb, Wei Huang, Wenhao Xue, Lin Sun, Jianping Guo, Yiran Peng, Jing Li, Alexei Lyapustin, Lei Liu, Hao Wu, and Yimeng Song
Atmos. Chem. Phys., 20, 3273–3289, https://doi.org/10.5194/acp-20-3273-2020, https://doi.org/10.5194/acp-20-3273-2020, 2020
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This study introduced an enhanced space–time extremely randomized trees (STET) approach to improve the 1 km resolution ground-level PM2.5 estimates across China using the remote sensing technology. The STET model shows high accuracy and strong predictive power and appears to outperform most models reported by previous studies. Thus, it is of great importance for future air pollution studies at medium- or small-scale areas and will be applied to generate the historical PM2.5 dataset across China.
Chunmao Zhu, Yugo Kanaya, Masayuki Takigawa, Kohei Ikeda, Hiroshi Tanimoto, Fumikazu Taketani, Takuma Miyakawa, Hideki Kobayashi, and Ignacio Pisso
Atmos. Chem. Phys., 20, 1641–1656, https://doi.org/10.5194/acp-20-1641-2020, https://doi.org/10.5194/acp-20-1641-2020, 2020
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Black carbon is believed to be one of the causes of the rapid warming and glacier melting in the Arctic. The results of our study show that processes associated with the petroleum industry, such as gas flaring in Russia, are the main BC source at the Arctic surface. Emissions in East Asia are the main BC sources at high altitudes in the Arctic. Wildfires in Siberia, Alaska, and Canada are another important Arctic BC source in summer.
Jun Zhu, Xiangao Xia, Huizheng Che, Jun Wang, Zhiyuan Cong, Tianliang Zhao, Shichang Kang, Xuelei Zhang, Xingna Yu, and Yanlin Zhang
Atmos. Chem. Phys., 19, 14637–14656, https://doi.org/10.5194/acp-19-14637-2019, https://doi.org/10.5194/acp-19-14637-2019, 2019
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The long-term temporal–spatial variations of the aerosol optical properties over the Tibetan Plateau (TP) based on the multiple ground-based sun photometer sites and the MODIS product are presented. Besides, the aerosol pollution and aerosol transport processes over the TP are also analyzed by the observations and models. The results in this region could help reduce the assessment uncertainties of aerosol radiative forcing and provide more information on aerosol transportation.
Dhananjay Kumar Deshmukh, M. Mozammel Haque, Yongwon Kim, and Kimitaka Kawamura
Atmos. Chem. Phys., 19, 14009–14029, https://doi.org/10.5194/acp-19-14009-2019, https://doi.org/10.5194/acp-19-14009-2019, 2019
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Organic tracers are useful to understand the sources and formation mechanisms of organic aerosols. We determined organic tracers in PM2.5 samples collected during the summer season of 2009 using a gas chromatograph–mass spectrometer. A notable feature in the Alaskan aerosol is the high levels of anhydrosugars and n-alkanoic acids. Our results demonstrate that forest fires and plant emissions are the crucial factors controlling the organic aerosol burden in the atmosphere of central Alaska.
Yunhua Chang, Yan-Lin Zhang, Jiarong Li, Chongguo Tian, Linlin Song, Xiaoyao Zhai, Wenqi Zhang, Tong Huang, Yu-Chi Lin, Chao Zhu, Yunting Fang, Moritz F. Lehmann, and Jianmin Chen
Atmos. Chem. Phys., 19, 12221–12234, https://doi.org/10.5194/acp-19-12221-2019, https://doi.org/10.5194/acp-19-12221-2019, 2019
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The present work underscores the value of cloud water dissolved inorganic nitrogen isotopes as carriers of quantitative information on regional NOx and NH3 emissions. It sheds light on the origin and production pathways of nitrogenous species in clouds and emphasizes the importance of biomass-burning-derived nitrogenous species as cloud condensation nuclei in China’s troposphere. Moreover, it highlights the rapid evolution of NOx emissions in China.
Wenqi Zhang, Yan-Lin Zhang, Fang Cao, Yankun Xiang, Yuanyuan Zhang, Mengying Bao, Xiaoyan Liu, and Yu-Chi Lin
Atmos. Chem. Phys., 19, 11071–11087, https://doi.org/10.5194/acp-19-11071-2019, https://doi.org/10.5194/acp-19-11071-2019, 2019
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A novel method to determine the concentration and the isotopes of WSOC in aerosols is established and applied in the analysis of a severe haze in eastern China. The results show that the studied site is affected by the photochemical aging, biomass burning and dust aerosols in different episodes during the sampling period. The analysis of WSOC and its isotopes offers a great potential to better understand the source emission, the atmospheric aging and the secondary production of WSOC.
Jing Wei, Yiran Peng, Rashed Mahmood, Lin Sun, and Jianping Guo
Atmos. Chem. Phys., 19, 7183–7207, https://doi.org/10.5194/acp-19-7183-2019, https://doi.org/10.5194/acp-19-7183-2019, 2019
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This study evaluates the suitability of 11 satellite-derived aerosol products in describing the spatio-temporal variations over the world. Our results show similar global patterns among these products but noticeable spatial heterogeneity and numerical differences over land regions. In general, MODIS products perform best at reflecting the spatial distributions and capturing the temporal trends of aerosol. This study help readers select a suitable aerosol dataset for their studies.
Md. Mozammel Haque, Kimitaka Kawamura, Dhananjay K. Deshmukh, Cao Fang, Wenhuai Song, Bao Mengying, and Yan-Lin Zhang
Atmos. Chem. Phys., 19, 5147–5164, https://doi.org/10.5194/acp-19-5147-2019, https://doi.org/10.5194/acp-19-5147-2019, 2019
Karl Espen Yttri, David Simpson, Robert Bergström, Gyula Kiss, Sönke Szidat, Darius Ceburnis, Sabine Eckhardt, Christoph Hueglin, Jacob Klenø Nøjgaard, Cinzia Perrino, Ignazio Pisso, Andre Stephan Henry Prevot, Jean-Philippe Putaud, Gerald Spindler, Milan Vana, Yan-Lin Zhang, and Wenche Aas
Atmos. Chem. Phys., 19, 4211–4233, https://doi.org/10.5194/acp-19-4211-2019, https://doi.org/10.5194/acp-19-4211-2019, 2019
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Carbonaceous aerosols from natural sources were abundant regardless of season. Residential wood burning (RWB) emissions were occasionally equally as large as or larger than of fossil-fuel sources, depending on season and region. RWB emissions are poorly constrained; thus emissions inventories need improvement. Harmonizing emission factors between countries is likely the most important step to improve model calculations for biomass burning emissions and European PM2.5 concentrations in general.
Yu-Chi Lin, Shih-Chieh Hsu, Chuan-Yao Lin, Shuen-Hsin Lin, Yi-Tang Huang, Yunhua Chang, and Yan-Lin Zhang
Atmos. Chem. Phys., 18, 13865–13879, https://doi.org/10.5194/acp-18-13865-2018, https://doi.org/10.5194/acp-18-13865-2018, 2018
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The Asian continent is a well-known big source of airborne As in the North Pacific region. Previously, high As concentrations over the free troposphere in the region have been observed and considered contributions of industrial emissions, especially of coal-combustion. In our study, we proposed a new concept for a potential source of high As over the subtropical free troposphere, that is, BB activities over southern Asia might be an important source of airborne arsenic in the springtime.
Yunhua Chang, Kan Huang, Mingjie Xie, Congrui Deng, Zhong Zou, Shoudong Liu, and Yanlin Zhang
Atmos. Chem. Phys., 18, 11793–11812, https://doi.org/10.5194/acp-18-11793-2018, https://doi.org/10.5194/acp-18-11793-2018, 2018
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We continuously performed a one-year and hourly-resolved measurement of 18 atmospheric elements in PM2.5 in Shanghai megacity. Here our high time-resolution observations over a long-term period provide baseline data with high detail, which are of great use for examining acute exposure of morbidity and mortality risk in association with PM2.5 metal species in China's megacities.
Yunhua Chang, Yanlin Zhang, Chongguo Tian, Shichun Zhang, Xiaoyan Ma, Fang Cao, Xiaoyan Liu, Wenqi Zhang, Thomas Kuhn, and Moritz F. Lehmann
Atmos. Chem. Phys., 18, 11647–11661, https://doi.org/10.5194/acp-18-11647-2018, https://doi.org/10.5194/acp-18-11647-2018, 2018
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We demonstrate that it is imperative that future studies, making use of isotope mixing models to gain conclusive constraints on the source partitioning of atmospheric NOx, consider this N isotope fractionation. Future assessments of NOx emissions in China (and elsewhere) should involve simultaneous δ15N and δ18O measurements of atmospheric nitrate and NOx at high spatiotemporal resolution, allowing former N-isotope-based NOx source partitioning estimates to be reevaluated more quantitatively.
Di Liu, Matthias Vonwiller, Jun Li, Junwen Liu, Sönke Szidat, Yanlin Zhang, Chongguo Tian, Yinjun Chen, Zhineng Cheng, Guangcai Zhong, Pingqing Fu, and Gan Zhang
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2018-295, https://doi.org/10.5194/acp-2018-295, 2018
Revised manuscript not accepted
Yan-Lin Zhang, Imad El-Haddad, Ru-Jin Huang, Kin-Fai Ho, Jun-Ji Cao, Yongming Han, Peter Zotter, Carlo Bozzetti, Kaspar R. Daellenbach, Jay G. Slowik, Gary Salazar, André S. H. Prévôt, and Sönke Szidat
Atmos. Chem. Phys., 18, 4005–4017, https://doi.org/10.5194/acp-18-4005-2018, https://doi.org/10.5194/acp-18-4005-2018, 2018
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Here we present a quantitative source apportionment of WSOC, isolated from aerosols in China using radiocarbon (14C) and offline high-resolution time of flight aerosol mass spectrometer measurements. We demonstrate a dominant contribution of non-fossil emissions to WSOC aerosols in the Northern Hemisphere. However, the fossil fraction is substantially larger in aerosols from East Asia and the east Asian pollution outflow, especially during winter, due to increasing coal combustion.
Suresh K. R. Boreddy, M. Mozammel Haque, and Kimitaka Kawamura
Atmos. Chem. Phys., 18, 1291–1306, https://doi.org/10.5194/acp-18-1291-2018, https://doi.org/10.5194/acp-18-1291-2018, 2018
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To better understand the impact of long-range atmospheric transport of East Asian pollutants over the western North Pacific, we conducted a long-term (2001–12) study on carbonaceous aerosols over the WNP, which demonstrates that the photochemical formation of WSOC and its contributions to SOA have increased over the western North Pacific via long-range atmospheric transport. Biomass-burning-derived carbonaceous aerosols have increased, while primary fossil-fuel-derived aerosols have decreased.
Kohei Ikeda, Hiroshi Tanimoto, Takafumi Sugita, Hideharu Akiyoshi, Yugo Kanaya, Chunmao Zhu, and Fumikazu Taketani
Atmos. Chem. Phys., 17, 10515–10533, https://doi.org/10.5194/acp-17-10515-2017, https://doi.org/10.5194/acp-17-10515-2017, 2017
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Black carbon (BC), also known as soot particles, plays a key role in Arctic warming; hence, an understanding of the major source regions and types is important for its mitigation. We found that Russia was the dominant contributor to Arctic BC at the surface level, while the East Asian contribution was the largest in the middle troposphere and the burden over the Arctic, suggesting that BC emission reduction from Russia and East Asia can help mitigate warming in the Arctic.
Yunhua Chang, Congrui Deng, Fang Cao, Chang Cao, Zhong Zou, Shoudong Liu, Xuhui Lee, Jun Li, Gan Zhang, and Yanlin Zhang
Atmos. Chem. Phys., 17, 9945–9964, https://doi.org/10.5194/acp-17-9945-2017, https://doi.org/10.5194/acp-17-9945-2017, 2017
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This paper presents the results from a 5-year and near-real-time measurement study of carbonaceous aerosols in PM2.5 conducted at an urban site in Shanghai. Moreover, we integrated the results from historical field measurements and satellite observations, concluding that carbonaceous aerosol pollution in Shanghai has gradually reduced since 2006. This can be largely explained by the introduction of air-cleaning measures such as controlling vehicular emissions.
Lei Zhao, Xuhui Lee, and Natalie M. Schultz
Atmos. Chem. Phys., 17, 9067–9080, https://doi.org/10.5194/acp-17-9067-2017, https://doi.org/10.5194/acp-17-9067-2017, 2017
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Heat stress associated with climate change is one of most severe threats to human society. The problem is further compounded in urban areas by urban heat islands (UHIs). We use an urban climate model to evaluate the cooling benefits of active urban heat mitigation strategies both individually and collectively. We show that by forming UHI mitigation wedges, these strategies have the potential to significantly reduce the UHI effect plus warming induced by greenhouse gases.
Xiaoning Xie, He Zhang, Xiaodong Liu, Yiran Peng, and Yangang Liu
Atmos. Chem. Phys., 17, 5877–5892, https://doi.org/10.5194/acp-17-5877-2017, https://doi.org/10.5194/acp-17-5877-2017, 2017
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New complete cloud parameterizations of cloud droplet effective radius and the two-moment cloud-to-rain autoconversion process explicitly accounting for dispersion are implemented into CAM5.1. The results show that the consideration of dispersion effect can significantly reduce the changes induced by anthropogenic aerosols in the cloud-top effective radius and the liquid water path, which reduces the AIF substantially at a global scale, especially in the Northern Hemisphere.
Peter Zotter, Hanna Herich, Martin Gysel, Imad El-Haddad, Yanlin Zhang, Griša Močnik, Christoph Hüglin, Urs Baltensperger, Sönke Szidat, and André S. H. Prévôt
Atmos. Chem. Phys., 17, 4229–4249, https://doi.org/10.5194/acp-17-4229-2017, https://doi.org/10.5194/acp-17-4229-2017, 2017
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Most studies use a single Ångström exponent for wood burning (αWB) and traffic (αTR) emissions in the Aethalometer model, used for source apportionment of black carbon, derived from previous work. However, accurate determination of the α values is currently lacking. Comparing radiocarbon measurements (14C) with the Aehtalometer model, good agreement was found, indicating that the Aethalometer model reproduces reasonably well the 14C results using our best estimate of a single αWB and αTR.
Jiaping Xu, Xuhui Lee, Wei Xiao, Chang Cao, Shoudong Liu, Xuefa Wen, Jingzheng Xu, Zhen Zhang, and Jiayu Zhao
Atmos. Chem. Phys., 17, 3385–3399, https://doi.org/10.5194/acp-17-3385-2017, https://doi.org/10.5194/acp-17-3385-2017, 2017
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The Yangtze River Delta is one of the most industrialized regions in China. In situ optical isotopic measurement in Nanjing, a city located in the Delta, showed unusually high atmospheric δ13C signals in the summer (−7.44 ‰, July 2013 mean), which we attributed to the influence of cement production in the region. Flux partitioning calculations revealed that natural ecosystems in the region were a negligibly small source of atmospheric CO2.
Yunhua Chang, Xuejun Liu, Congrui Deng, Anthony J. Dore, and Guoshun Zhuang
Atmos. Chem. Phys., 16, 11635–11647, https://doi.org/10.5194/acp-16-11635-2016, https://doi.org/10.5194/acp-16-11635-2016, 2016
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First, we establish a pool of isotopic signatures (δ15N–NH3) for the major NH3 emission sources in China. Second, we demonstrated that the isotopic source signatures of NH3 represent an emerging tool for partitioning NH3 sources in urban atmospheres.
Congsheng Fu, Xuhui Lee, Timothy J. Griffis, Edward J. Dlugokencky, and Arlyn E. Andrews
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2016-761, https://doi.org/10.5194/acp-2016-761, 2016
Revised manuscript not accepted
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To the best of our knowledge, no modeling studies have been published on the relationship between the spatial characteristics of agricultural N2O emissions and the atmospheric N2O mixing ratio at the regional scale. To fill this gap, we proposed a simple inverse analysis method based on tower measurements and an Eulerian model. According to our study, the N2O emissions from the U. S. Corn Belt is clearly estimated by IPCC, and such underestimate is not dependent on tower measurement location.
Chunmao Zhu, Kimitaka Kawamura, Yasuro Fukuda, Michihiro Mochida, and Yoko Iwamoto
Atmos. Chem. Phys., 16, 7497–7506, https://doi.org/10.5194/acp-16-7497-2016, https://doi.org/10.5194/acp-16-7497-2016, 2016
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We collected aerosol samples in a midlatitude forest in Wakayama, Japan and analyzed the organic tracers of various sources. We found that compounds originating from fungal spores contributed significantly to total organic aerosol mass. On the other hand, those from oxidation of biogenic volatile organic compounds, although they could not be ignored, had relatively smaller mass fractions.
Yan-Lin Zhang, Kimitaka Kawamura, Ping Qing Fu, Suresh K. R. Boreddy, Tomomi Watanabe, Shiro Hatakeyama, Akinori Takami, and Wei Wang
Atmos. Chem. Phys., 16, 6407–6419, https://doi.org/10.5194/acp-16-6407-2016, https://doi.org/10.5194/acp-16-6407-2016, 2016
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Here, based on three aircraft measurements over East Asia, we demonstrate an aqueous-phase mechanism for enhanced SOA production in the troposphere following correlation analysis of oxalic acid in tropospheric aerosols with other measured chemical variables including its precursors and its intermediate as well as biogenic-derived SOA from isoprene, monoterpenes and β-caryophyllene.
Timothy J. Griffis, Jeffrey D. Wood, John M. Baker, Xuhui Lee, Ke Xiao, Zichong Chen, Lisa R. Welp, Natalie M. Schultz, Galen Gorski, Ming Chen, and John Nieber
Atmos. Chem. Phys., 16, 5139–5157, https://doi.org/10.5194/acp-16-5139-2016, https://doi.org/10.5194/acp-16-5139-2016, 2016
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Increasing atmospheric humidity and convective precipitation over land provide evidence of intensification of the hydrologic cycle. We present the first multi-annual isotope (oxygen and deuterium) water vapor observations from a very tall tower (185 m) in the upper Midwest, United States, to diagnose the sources, transport, and fractionation of water vapor in the atmosphere. The results show a relatively high degree of summertime water recycling within the region (~30 % mean and ~60 % maximum).
Yunhua Chang, Zhong Zou, Congrui Deng, Kan Huang, Jeffrey L. Collett, Jing Lin, and Guoshun Zhuang
Atmos. Chem. Phys., 16, 3577–3594, https://doi.org/10.5194/acp-16-3577-2016, https://doi.org/10.5194/acp-16-3577-2016, 2016
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This study linked a long-term and near real-time measurement of NH3 at one of China’s flagship supersites with a vehicle source-specific campaign performed inside and outside of a major freeway tunnel in Shanghai. Our results clearly show that vehicle emissions associated with combustion are an important NH3 source in Shanghai urban areas and may have potential implications for PM2.5 pollution in the urban atmosphere.
Junwen Liu, Jun Li, Di Liu, Ping Ding, Chengde Shen, Yangzhi Mo, Xinming Wang, Chunling Luo, Zhineng Cheng, Sönke Szidat, Yanlin Zhang, Yingjun Chen, and Gan Zhang
Atmos. Chem. Phys., 16, 2985–2996, https://doi.org/10.5194/acp-16-2985-2016, https://doi.org/10.5194/acp-16-2985-2016, 2016
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Many Chinese cities now are suffering the high loadings of fine particular matters, which can bring a lot of negative impacts on air quality, human health, and the climate system. The Chinese government generally focuses on the control of the emissions from vehicles and industry. Our results evidently show that the burning of biomass materials such as wood and agricultural residues can lead to the urban air pollution in China. The characteristic of haze covering China is distinct from regions.
K. R. Daellenbach, C. Bozzetti, A. Křepelová, F. Canonaco, R. Wolf, P. Zotter, P. Fermo, M. Crippa, J. G. Slowik, Y. Sosedova, Y. Zhang, R.-J. Huang, L. Poulain, S. Szidat, U. Baltensperger, I. El Haddad, and A. S. H. Prévôt
Atmos. Meas. Tech., 9, 23–39, https://doi.org/10.5194/amt-9-23-2016, https://doi.org/10.5194/amt-9-23-2016, 2016
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In this study, we developed an offline technique using the AMS for the characterization of the chemical fingerprints of aerosols collected on quartz filters, and evaluated the suitability of the organic mass spectral data for source apportionment. This technique may be used to enhance the AMS capabilities in measuring size-fractionated, spatially resolved long-term data sets.
G. O. Mouteva, S. M. Fahrni, G. M. Santos, J. T. Randerson, Y.-L. Zhang, S. Szidat, and C. I. Czimczik
Atmos. Meas. Tech., 8, 3729–3743, https://doi.org/10.5194/amt-8-3729-2015, https://doi.org/10.5194/amt-8-3729-2015, 2015
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We describe a stepwise uncertainty analysis of 14C measurements of organic (OC) and elemental (EC) carbon fractions of aerosols. Using the Swiss_4S thermal-optical protocol with a newly established trapping setup, we show that we can efficiently isolate and trap each carbon fraction and perform 14C analysis of ultra-small OC and EC samples with high accuracy and low 14C blanks. Our study presents a first step towards the development of a common protocol for OC and EC 14C measurements.
C. Zhu, K. Kawamura, and B. Kunwar
Atmos. Chem. Phys., 15, 1959–1973, https://doi.org/10.5194/acp-15-1959-2015, https://doi.org/10.5194/acp-15-1959-2015, 2015
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Using levoglucosan as a biomass burning tracer, influence of biomass burning on the air quality of Okinawa Island in the western North Pacific Rim was evaluated. High levels of levoglucosan were found in the atmospheric aerosols during winter probably due to the open burning and domestic heating and cooking in north/northeast China, Mongolia and Russia, together with enhanced continental outflow.
Y.-L. Zhang, R.-J. Huang, I. El Haddad, K.-F. Ho, J.-J. Cao, Y. Han, P. Zotter, C. Bozzetti, K. R. Daellenbach, F. Canonaco, J. G. Slowik, G. Salazar, M. Schwikowski, J. Schnelle-Kreis, G. Abbaszade, R. Zimmermann, U. Baltensperger, A. S. H. Prévôt, and S. Szidat
Atmos. Chem. Phys., 15, 1299–1312, https://doi.org/10.5194/acp-15-1299-2015, https://doi.org/10.5194/acp-15-1299-2015, 2015
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Source apportionment of fine carbonaceous aerosols using radiocarbon and other organic markers measurements during 2013 winter haze episodes was conducted at four megacities in China. Our results demonstrate that fossil emissions predominate EC with a mean contribution of 75±8%, whereas non-fossil sources account for 55±10% of OC; and the increment of TC on heavily polluted days was mainly driven by the increase of secondary OC from both fossil-fuel and non-fossil emissions.
P. Zotter, V. G. Ciobanu, Y. L. Zhang, I. El-Haddad, M. Macchia, K. R. Daellenbach, G. A. Salazar, R.-J. Huang, L. Wacker, C. Hueglin, A. Piazzalunga, P. Fermo, M. Schwikowski, U. Baltensperger, S. Szidat, and A. S. H. Prévôt
Atmos. Chem. Phys., 14, 13551–13570, https://doi.org/10.5194/acp-14-13551-2014, https://doi.org/10.5194/acp-14-13551-2014, 2014
X. Zhang, X. Lee, T. J. Griffis, J. M. Baker, and W. Xiao
Atmos. Chem. Phys., 14, 10705–10719, https://doi.org/10.5194/acp-14-10705-2014, https://doi.org/10.5194/acp-14-10705-2014, 2014
C. Zhu and H. Yoshikawa-Inoue
Earth Syst. Dynam. Discuss., https://doi.org/10.5194/esdd-5-809-2014, https://doi.org/10.5194/esdd-5-809-2014, 2014
Preprint withdrawn
Y. H. Chang
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acpd-14-8495-2014, https://doi.org/10.5194/acpd-14-8495-2014, 2014
Revised manuscript has not been submitted
Y. Peng, V. K. Arora, W. A. Kurz, R. A. Hember, B. J. Hawkins, J. C. Fyfe, and A. T. Werner
Biogeosciences, 11, 635–649, https://doi.org/10.5194/bg-11-635-2014, https://doi.org/10.5194/bg-11-635-2014, 2014
X.-F. Wen, Y. Meng, X.-Y. Zhang, X.-M. Sun, and X. Lee
Atmos. Meas. Tech., 6, 1491–1501, https://doi.org/10.5194/amt-6-1491-2013, https://doi.org/10.5194/amt-6-1491-2013, 2013
Related subject area
Subject: Aerosols | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
Direct measurement of N2O5 heterogeneous uptake coefficients on atmospheric aerosols in southwestern China and evaluation of current parameterizations
Measurement report: Per- and polyfluoroalkyl substances (PFAS) in particulate matter (PM10) from activated sludge aeration
African dust transported to Barbados in the wintertime lacks indicators of chemical aging
A 60-year atmospheric nitrate isotope record from a southeastern Greenland ice core with minimal postdepositional alteration
Measurement report: Characterization of aerosol hygroscopicity over Southeast Asia during the NASA CAMP2Ex campaign
Molecular characterization of organic aerosols in urban and forested areas of Paris using high-resolution mass spectrometry
Measurement report: Wintertime aerosol characterization at an urban traffic site in Helsinki, Finland
Source apportionment and ecotoxicity of PM2.5 pollution events in a major Southern Hemisphere megacity: influence of a biofuel-impacted fleet and biomass burning
Marine organic aerosol at Mace Head: effects from phytoplankton and source region variability
Fossil-Dominated SOA Formation in Coastal China: Size-Divergent Pathways of Aqueous Fenton Reactions versus Gas-phase VOC Autoxidation
Measurement report: Sources and meteorology influencing highly time-resolved PM2.5 trace elements at three urban sites in the extremely polluted Indo-Gangetic Plain in India
Formation of highly absorptive secondary brown carbon through nighttime multiphase chemistry of biomass burning emissions
Measurement report: Vertically resolved atmospheric properties observed over the Southern Great Plains with the ArcticShark uncrewed aerial system
Technical note: Towards a stronger observational support for haze pollution control by interpreting carbonaceous aerosol results derived from different measurement approaches
Non-biogenic sources are an important but overlooked contributor to aerosol isoprene-derived organosulfates during winter in northern China
Unveiling single-particle composition, size, shape, and mixing state of freshly emitted Icelandic dust via electron microscopy analysis
The critical role of aqueous-phase processes in aromatic-derived nitrogen-containing organic aerosol formation in cities with different energy consumption patterns
Characterization of atmospheric water-soluble brown carbon in the Athabasca oil sands region, Canada
Sensitivity of aerosol and cloud properties to coupling strength of marine boundary layer clouds over the northwest Atlantic
Measurement Report: Molecular composition, sources, and evolution of atmospheric organic aerosols in a basin city in China
Burning conditions and transportation pathways determine biomass-burning aerosol properties in the Ascension Island marine boundary layer
Observations of high-time-resolution and size-resolved aerosol chemical composition and microphysics in the central Arctic: implications for climate-relevant particle properties
Measurement report: Brown carbon aerosol in rural Germany – sources, chemistry, and diurnal variations
Particle flux-gradient relationships in the high Arctic: Emission and deposition patterns across three surface types
Climatology of aerosol pH and its controlling factors at the Melpitz continental background site in central Europe
Measurement Report: Polycyclic aromatic hydrocarbons (PAHs) and their alkylated (RPAHs), nitrated (NPAHs) and oxygenated (OPAHs) derivatives in the global marine atmosphere: occurrence, spatial variations, and source apportionment
Multiple eco-regions contribute to the seasonal cycle of Antarctic aerosol size distributions
Seasonal investigation of ultrafine-particle organic composition in an eastern Amazonian rainforest
Characterizing lead-rich particles in Beijing's atmosphere following coal-to-gas conversion: Insights from single particle aerosol mass spectrometry
Contrasting solubility and speciation of metal ions in total suspended particulate matter and fog from the coast of Namibia
Significant secondary formation of nitrogenous organic aerosols in an urban atmosphere revealed by bihourly measurements of bulk organic nitrogen and comprehensive molecular markers
High-resolution analyses of concentrations and sizes of refractory black carbon particles deposited in northwestern Greenland over the past 350 years – Part 2: Seasonal and temporal trends in refractory black carbon originated from fossil fuel combustion and biomass burning
Carbonate content and stable isotopic composition of aerosol carbon in the Canadian High Arctic
Significant role of biomass burning in heavy haze formation in Nanjing, a megacity in China: molecular-level insights from intensive PM2.5 sampling on winter hazy days
Widespread trace bromine and iodine in remote tropospheric non-sea-salt aerosols
Significant contributions of biomass burning to PM2.5-bound aromatic compounds: insights from field observations and quantum chemical calculations
Iron isotopes reveal significant aerosol dissolution over the Pacific Ocean
Formation and chemical evolution of secondary organic aerosol in two different environments: a dual-chamber study
Complementary aerosol mass spectrometry elucidates sources of wintertime sub-micron particle pollution in Fairbanks, Alaska, during ALPACA 2022
Enrichment of organic nitrogen in fog residuals observed in the Italian Po Valley
Technical note: Quantified organic aerosol subsaturated hygroscopicity by a simple optical scatter monitor system through field measurements
Measurement report: Oxidation potential of water-soluble aerosol components in the south and north of Beijing
Enhanced daytime secondary aerosol formation driven by gas–particle partitioning in downwind urban plumes
Technical note: Reconstructing surface missing aerosol elemental carbon data in long-term series with ensemble learning
Understanding the mechanism and importance of brown carbon bleaching across the visible spectrum in biomass burning plumes from the WE-CAN campaign
Influence of terrestrial and marine air mass on the constituents and intermixing of bioaerosols over a coastal atmosphere
A multi-site passive approach to studying the emissions and evolution of smoke from prescribed fires
The annual cycle and sources of relevant aerosol precursor vapors in the central Arctic during the MOSAiC expedition
Enhanced emission of intermediate/semi-volatile organic matters in both gas and particle phases from ship exhausts with low-sulfur fuels
Advances in characterization of black carbon particles and their associated coatings using the soot particle aerosol mass spectrometer in Singapore, a complex city environment
Jiayin Li, Tianyu Zhai, Xiaorui Chen, Haichao Wang, Shuyang Xie, Shiyi Chen, Chunmeng Li, Yuanjun Gong, Huabin Dong, and Keding Lu
Atmos. Chem. Phys., 25, 6395–6406, https://doi.org/10.5194/acp-25-6395-2025, https://doi.org/10.5194/acp-25-6395-2025, 2025
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We directly measured the dinitrogen pentoxide (N2O5) uptake coefficient using an aerosol flow tube, which critically impacts the NOx fate and particulate nitrate formation in a typical highland city, Kunming, in China. We found that the performance of current γ (N2O5) parameterizations showed deviations with the varying aerosol liquid water content (ALWC). Such differences would lead to biased estimation of particulate nitrate production potential. We give suggestions for future research directions.
Jishnu Pandamkulangara Kizhakkethil, Zongbo Shi, Anna Bogush, and Ivan Kourtchev
Atmos. Chem. Phys., 25, 5947–5958, https://doi.org/10.5194/acp-25-5947-2025, https://doi.org/10.5194/acp-25-5947-2025, 2025
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Pollution with per- and polyfluoroalkyl substances (PFAS) has received attention due to their environmental persistence and bioaccumulation, but their sources remain poorly understood. PM10 (particulate matter) collected above a scaled-down activated sludge tank treating domestic sewage in the UK was analysed for a range of short-, medium-, and long-chain PFAS. Eight PFAS were detected in the PM10. Our results suggest that wastewater treatment processes, i.e. activated sludge aeration, could aerosolise PFAS into airborne PM.
Haley M. Royer, Michael T. Sheridan, Hope E. Elliott, Edmund Blades, Nurun Nahar Lata, Zezhen Cheng, Swarup China, Zihua Zhu, Andrew P. Ault, and Cassandra J. Gaston
Atmos. Chem. Phys., 25, 5743–5759, https://doi.org/10.5194/acp-25-5743-2025, https://doi.org/10.5194/acp-25-5743-2025, 2025
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Saharan dust transported across the Atlantic to the Caribbean, South America, and North America is hypothesized to undergo chemical processing by acids that enhances cloud droplet formation and nutrient availability. In this study, chemical analysis performed on African dust deposited over Barbados shows that acid tracers are found mostly on sea salt and smoke particles, rather than dust, indicating that dust particles undergo minimal chemical processing.
Zhao Wei, Shohei Hattori, Asuka Tsuruta, Zhuang Jiang, Sakiko Ishino, Koji Fujita, Sumito Matoba, Lei Geng, Alexis Lamothe, Ryu Uemura, Naohiro Yoshida, Joel Savarino, and Yoshinori Iizuka
Atmos. Chem. Phys., 25, 5727–5742, https://doi.org/10.5194/acp-25-5727-2025, https://doi.org/10.5194/acp-25-5727-2025, 2025
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Nitrate isotope records in ice cores reveal changes in NOₓ emissions and atmospheric oxidation chemistry driven by human activity. However, UV-driven postdepositional processes can alter nitrate in snow, making snow accumulation rates critical for preserving these records. This study examines nitrate isotopes in a southeastern Greenland ice core, where high snow accumulation minimizes these effects, providing a reliable archive of atmospheric nitrogen cycling.
Genevieve Rose Lorenzo, Luke D. Ziemba, Avelino F. Arellano, Mary C. Barth, Ewan C. Crosbie, Joshua P. DiGangi, Glenn S. Diskin, Richard Ferrare, Miguel Ricardo A. Hilario, Michael A. Shook, Simone Tilmes, Jian Wang, Qian Xiao, Jun Zhang, and Armin Sorooshian
Atmos. Chem. Phys., 25, 5469–5495, https://doi.org/10.5194/acp-25-5469-2025, https://doi.org/10.5194/acp-25-5469-2025, 2025
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Novel aerosol hygroscopicity analyses of CAMP2Ex (Cloud, Aerosol, and Monsoon Processes Philippines Experiment) field campaign data show low aerosol hygroscopicity values in Southeast Asia. Organic carbon from smoke decreases hygroscopicity to levels more like those in continental than in polluted marine regions. Hygroscopicity changes at cloud level demonstrate how surface particles impact clouds in the region, affecting model representation of aerosol and cloud interactions in similar polluted marine regions with high organic carbon emissions.
Diana L. Pereira, Chiara Giorio, Aline Gratien, Alexander Zherebker, Gael Noyalet, Servanne Chevaillier, Stéphanie Alage, Elie Almarj, Antonin Bergé, Thomas Bertin, Mathieu Cazaunau, Patrice Coll, Ludovico Di Antonio, Sergio Harb, Johannes Heuser, Cécile Gaimoz, Oscar Guillemant, Brigitte Language, Olivier Lauret, Camilo Macias, Franck Maisonneuve, Bénédicte Picquet-Varrault, Raquel Torres, Sylvain Triquet, Pascal Zapf, Lelia Hawkins, Drew Pronovost, Sydney Riley, Pierre-Marie Flaud, Emilie Perraudin, Pauline Pouyes, Eric Villenave, Alexandre Albinet, Olivier Favez, Robin Aujay-Plouzeau, Vincent Michoud, Christopher Cantrell, Manuela Cirtog, Claudia Di Biagio, Jean-François Doussin, and Paola Formenti
Atmos. Chem. Phys., 25, 4885–4905, https://doi.org/10.5194/acp-25-4885-2025, https://doi.org/10.5194/acp-25-4885-2025, 2025
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In order to study aerosols in environments influenced by anthropogenic and biogenic emissions, we performed analyses of samples collected during the ACROSS (Atmospheric Chemistry Of the Suburban Forest) campaign in summer 2022 in the greater Paris area. After analysis of the chemical composition by means of total carbon determination and high-resolution mass spectrometry, this work highlights the influence of anthropogenic inputs on the chemical composition of both urban and forested areas.
Kimmo Teinilä, Sanna Saarikoski, Henna Lintusaari, Teemu Lepistö, Petteri Marjanen, Minna Aurela, Heidi Hellén, Toni Tykkä, Markus Lampimäki, Janne Lampilahti, Luis Barreira, Timo Mäkelä, Leena Kangas, Juha Hatakka, Sami Harni, Joel Kuula, Jarkko V. Niemi, Harri Portin, Jaakko Yli-Ojanperä, Ville Niemelä, Milja Jäppi, Katrianne Lehtipalo, Joonas Vanhanen, Liisa Pirjola, Hanna E. Manninen, Tuukka Petäjä, Topi Rönkkö, and Hilkka Timonen
Atmos. Chem. Phys., 25, 4907–4928, https://doi.org/10.5194/acp-25-4907-2025, https://doi.org/10.5194/acp-25-4907-2025, 2025
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Physical and chemical properties of particulate matter and concentrations of trace gases were measured in a street canyon in Helsinki, Finland, and an urban background site in January–February 2022 to investigate the effect of wintertime conditions on pollutants. State-of-the-art instruments and a mobile laboratory were used, and the measurement data were analysed further with modelling tools like positive matrix factorization and the Pollution Detection Algorithm.
Guilherme Martins Pereira, Leonardo Yoshiaki Kamigauti, Rubens Fabio Pereira, Djacinto Monteiro dos Santos, Thayná da Silva Santos, José Vinicius Martins, Célia Alves, Cátia Gonçalves, Ismael Casotti Rienda, Nora Kováts, Thiago Nogueira, Luciana Rizzo, Paulo Artaxo, Regina Maura de Miranda, Marcia Akemi Yamasoe, Edmilson Dias de Freitas, Pérola de Castro Vasconcellos, and Maria de Fatima Andrade
Atmos. Chem. Phys., 25, 4587–4616, https://doi.org/10.5194/acp-25-4587-2025, https://doi.org/10.5194/acp-25-4587-2025, 2025
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The chemical composition of fine particulate matter was studied in the megacity of São Paulo (Brazil) during a polluted period. Vehicular-related sources remain relevant; however, a high contribution of biomass burning was observed and correlated with sample ecotoxicity. Emerging biomass burning sources, such as forest fires and sugarcane-bagasse-based power plants, highlight the need for additional control measures alongside stricter rules concerning vehicular emissions.
Emmanuel Chevassus, Kirsten N. Fossum, Darius Ceburnis, Lu Lei, Chunshui Lin, Wei Xu, Colin O'Dowd, and Jurgita Ovadnevaite
Atmos. Chem. Phys., 25, 4107–4129, https://doi.org/10.5194/acp-25-4107-2025, https://doi.org/10.5194/acp-25-4107-2025, 2025
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This study presents the first source apportionment of organic aerosol at Mace Head via high-resolution mass spectrometry. Introducing transfer entropy as a novel method reveals that aged organic aerosol originates from both open-ocean ozonolysis and local peat-burning oxidation. Methanesulfonic acid and organic sea spray both mirror phytoplankton activity, with the former closely tied to coccolithophore blooms and the latter linked to diatoms, chlorophytes, and cyanobacteria.
Jia-Yuan Wang, Meng-Xue Tang, Shan Lu, Ke-Jin Tang, Xing Peng, Ling-Yan He, and Xiao-Feng Huang
EGUsphere, https://doi.org/10.5194/egusphere-2025-1034, https://doi.org/10.5194/egusphere-2025-1034, 2025
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Our study explores how secondary organic aerosols (SOA), a major component of air pollution, form in different particle sizes in a coastal city in China. We found that SOA in fine particles is mainly produced through aqueous chemical reactions, especially those involving iron. In contrast, coarse particles form SOA through reactions with ozone and gases from both fossil fuels and natural sources. These findings highlight the need for size-specific air pollution models.
Ashutosh K. Shukla, Sachchida N. Tripathi, Shamitaksha Talukdar, Vishnu Murari, Sreenivas Gaddamidi, Manousos-Ioannis Manousakas, Vipul Lalchandani, Kuldeep Dixit, Vinayak M. Ruge, Peeyush Khare, Mayank Kumar, Vikram Singh, Neeraj Rastogi, Suresh Tiwari, Atul K. Srivastava, Dilip Ganguly, Kaspar Rudolf Daellenbach, and André S. H. Prévôt
Atmos. Chem. Phys., 25, 3765–3784, https://doi.org/10.5194/acp-25-3765-2025, https://doi.org/10.5194/acp-25-3765-2025, 2025
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Our study delves into the elemental composition of aerosols at three sites across the Indo-Gangetic Plain (IGP), revealing distinct patterns during pollution episodes. We found significant increases in chlorine (Cl)-rich and solid fuel combustion (SFC) sources, indicating dynamic emission sources, agricultural burning impacts, and meteorological influences. Surges in Cl-rich particles during cold periods highlight their role in particle growth under high-relative-humidity conditions.
Ye Kuang, Biao Luo, Shan Huang, Junwen Liu, Weiwei Hu, Yuwen Peng, Duohong Chen, Dingli Yue, Wanyun Xu, Bin Yuan, and Min Shao
Atmos. Chem. Phys., 25, 3737–3752, https://doi.org/10.5194/acp-25-3737-2025, https://doi.org/10.5194/acp-25-3737-2025, 2025
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This research reveals the potential importance of nighttime NO3 radical chemistry and aerosol water in the rapid formation of secondary brown carbon from diluted biomass burning emissions. The findings enhance our understanding of nighttime biomass burning evolution and its implications for climate and regional air quality, especially regarding interactions with background aerosol water and water-rich fogs and clouds.
Fan Mei, Qi Zhang, Damao Zhang, Jerome D. Fast, Gourihar Kulkarni, Mikhail S. Pekour, Christopher R. Niedek, Susanne Glienke, Israel Silber, Beat Schmid, Jason M. Tomlinson, Hardeep S. Mehta, Xena Mansoura, Zezhen Cheng, Gregory W. Vandergrift, Nurun Nahar Lata, Swarup China, and Zihua Zhu
Atmos. Chem. Phys., 25, 3425–3444, https://doi.org/10.5194/acp-25-3425-2025, https://doi.org/10.5194/acp-25-3425-2025, 2025
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This study highlights the unique capability of the ArcticShark, an uncrewed aerial system, in measuring vertically resolved atmospheric properties. Data from 32 research flights in 2023 reveal seasonal patterns and correlations with conventional measurements. The consistency and complementarity of in situ and remote sensing methods are highlighted. The study demonstrates the ArcticShark’s versatility in bridging data gaps and improving the understanding of vertical atmospheric structures.
Yuan Cheng, Ying-jie Zhong, Zhi-qing Zhang, Xu-bing Cao, and Jiu-meng Liu
EGUsphere, https://doi.org/10.5194/egusphere-2025-537, https://doi.org/10.5194/egusphere-2025-537, 2025
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As an emerging hotspot of atmospheric sciences, Northeast China is distinct due to the frigid winter and the strong emissions from agricultural fires. Based on field campaigns conducted in Harbin, we successively identified the analytical method that could lead to proper results of organic and elemental carbon. Our results are believed to be a support for future efforts on exploration of the PM2.5 sources in Northeast China, which are essential for further improving the regional air quality.
Ting Yang, Yu Xu, Yu-Chen Wang, Yi-Jia Ma, Hong-Wei Xiao, Hao Xiao, and Hua-Yun Xiao
Atmos. Chem. Phys., 25, 2967–2978, https://doi.org/10.5194/acp-25-2967-2025, https://doi.org/10.5194/acp-25-2967-2025, 2025
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Previous measurement–model comparisons of atmospheric isoprene levels showed a significant unidentified source of isoprene in some northern Chinese cities during winter. Here, the first combination of large-scale observations and field combustion experiments provides novel insights into biomass burning emissions as a significant source of isoprene-derived organosulfates during winter in northern cities of China.
Agnesh Panta, Konrad Kandler, Kerstin Schepanski, Andres Alastuey, Pavla Dagsson Waldhauserova, Sylvain Dupont, Melanie Eknayan, Cristina González-Flórez, Adolfo González-Romero, Martina Klose, Mara Montag, Xavier Querol, Jesús Yus-Díez, and Carlos Pérez García-Pando
EGUsphere, https://doi.org/10.5194/egusphere-2025-494, https://doi.org/10.5194/egusphere-2025-494, 2025
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Iceland is among the most active dust source areas in the world. Dust properties are influenced by particle size, mineralogy, shape, and mixing state. This work characterizes freshly emitted individual aerosol particles of Icelandic dust using electron microscopy. Our study provides insights into critical particle-specific information will contribute to better constraining climate models that consider mineralogical variations in their representation of the dust cycle.
Yi-Jia Ma, Yu Xu, Ting Yang, Lin Gui, Hong-Wei Xiao, Hao Xiao, and Hua-Yun Xiao
Atmos. Chem. Phys., 25, 2763–2780, https://doi.org/10.5194/acp-25-2763-2025, https://doi.org/10.5194/acp-25-2763-2025, 2025
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The abundance, potential precursors, and main formation mechanisms of nitrogen-containing organic compounds (NOCs) in PM2.5 during winter were compared among cities with different energy consumption patterns. The aerosol NOC pollution during winter in China is closely associated with the intensity of precursor emissions and the aqueous-phase processes. Our results highlight the importance of emission reduction strategies in controlling aerosol NOCs pollution during winter in China.
Dane Blanchard, Mark Gordon, Duc Huy Dang, Paul Andrew Makar, and Julian Aherne
Atmos. Chem. Phys., 25, 2423–2442, https://doi.org/10.5194/acp-25-2423-2025, https://doi.org/10.5194/acp-25-2423-2025, 2025
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This study offers the first known evaluation of water-soluble brown carbon aerosols in the Athabasca oil sands region (AOSR), Canada. Fluorescence spectroscopy analysis of aerosol samples from five regional sites (collected during the summer of 2021) identified oil sands operations as a measurable brown carbon source. Industrial aerosol emissions were unlikely to impact regional radiative forcing. These findings show that fluorescence spectroscopy can be used to monitor brown carbon in the AOSR.
Kira Zeider, Kayla McCauley, Sanja Dmitrovic, Leong Wai Siu, Yonghoon Choi, Ewan C. Crosbie, Joshua P. DiGangi, Glenn S. Diskin, Simon Kirschler, John B. Nowak, Michael A. Shook, Kenneth L. Thornhill, Christiane Voigt, Edward L. Winstead, Luke D. Ziemba, Paquita Zuidema, and Armin Sorooshian
Atmos. Chem. Phys., 25, 2407–2422, https://doi.org/10.5194/acp-25-2407-2025, https://doi.org/10.5194/acp-25-2407-2025, 2025
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In situ aircraft data collected over the northwest Atlantic Ocean are utilized to compare aerosol conditions and turbulence between near-surface and below-cloud-base altitudes for different regimes of coupling strength between those two levels, along with how cloud microphysical properties vary across those regimes. Stronger coupling yields more homogenous aerosol structure vertically along with higher cloud drop concentrations and sea salt influence in clouds.
Junke Zhang, Xinyi Fu, Chunying Chen, Yunfei Su, Siyu Liu, Luyao Chen, Yubao Chen, Gehui Wang, and Andre S. H. Prevot
EGUsphere, https://doi.org/10.5194/egusphere-2025-92, https://doi.org/10.5194/egusphere-2025-92, 2025
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The 125 organic aerosol (OA) compounds in PM2.5 in winter in Chengdu were measured at the molecular level. OA was dominated by fatty acids, phthalate esters, and anhydrosugars, and were deeply influenced by anthropogenic sources. As pollution worsens: secondary inorganic species and secondary organic carbon (OC) dominated the increase in PM2.5; fatty acids and anhydrosugars dominated the increase in OA; and the contribution of secondary formation and biomass burning to OC increased markedly.
Amie Dobracki, Ernie R. Lewis, Arthur J. Sedlacek III, Tyler Tatro, Maria A. Zawadowicz, and Paquita Zuidema
Atmos. Chem. Phys., 25, 2333–2363, https://doi.org/10.5194/acp-25-2333-2025, https://doi.org/10.5194/acp-25-2333-2025, 2025
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Biomass-burning aerosol is commonly present in the marine boundary layer over the southeast Atlantic Ocean between June and October. Our research indicates that burning conditions, aerosol transport pathways, and prolonged oxidation processes (heterogeneous and aqueous phases) determine the chemical, microphysical, and optical properties of the boundary layer aerosol. Notably, we find that the aerosol optical properties can be estimated from the chemical properties alone.
Benjamin Heutte, Nora Bergner, Hélène Angot, Jakob B. Pernov, Lubna Dada, Jessica A. Mirrielees, Ivo Beck, Andrea Baccarini, Matthew Boyer, Jessie M. Creamean, Kaspar R. Daellenbach, Imad El Haddad, Markus M. Frey, Silvia Henning, Tiia Laurila, Vaios Moschos, Tuukka Petäjä, Kerri A. Pratt, Lauriane L. J. Quéléver, Matthew D. Shupe, Paul Zieger, Tuija Jokinen, and Julia Schmale
Atmos. Chem. Phys., 25, 2207–2241, https://doi.org/10.5194/acp-25-2207-2025, https://doi.org/10.5194/acp-25-2207-2025, 2025
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Limited aerosol measurements in the central Arctic hinder our understanding of aerosol–climate interactions in the region. Our year-long observations of aerosol physicochemical properties during the MOSAiC expedition reveal strong seasonal variations in aerosol chemical composition, where the short-term variability is heavily affected by storms in the Arctic. Local wind-generated particles are shown to be an important source of cloud seeds, especially in autumn.
Feng Jiang, Harald Saathoff, Uzoamaka Ezenobi, Junwei Song, Hengheng Zhang, Linyu Gao, and Thomas Leisner
Atmos. Chem. Phys., 25, 1917–1930, https://doi.org/10.5194/acp-25-1917-2025, https://doi.org/10.5194/acp-25-1917-2025, 2025
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The chemical composition of brown carbon in the particle and gas phase was determined by mass spectrometry. BrC in the gas phase was mainly controlled by secondary formation and particle-to-gas partitioning. BrC in the particle phase was mainly from secondary formation. This work helps to get a better understanding of diurnal variations and the sources of brown carbon aerosol at a rural location in central Europe.
Theresa Mathes, Heather Guy, John Prytherch, Julia Kojoj, Ian Brooks, Sonja Murto, Paul Zieger, Birgit Wehner, Michael Tjernström, and Andreas Held
EGUsphere, https://doi.org/10.5194/egusphere-2025-183, https://doi.org/10.5194/egusphere-2025-183, 2025
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The Arctic is warming faster than the global average and aerosol-cloud-sea-ice interactions are crucial for studying its climate system. During the ARTofMELT Expedition 2023, particle and sensible heat fluxes were measured over multiple surfaces. Wide lead surfaces acted as particle sources with the strongest sensible heat fluxes, while closed ice surfaces acted as a particle sink. This study improves methods to measure these interactions, enhancing our understanding of Arctic climate processes.
Vikram Pratap, Christopher J. Hennigan, Bastian Stieger, Andreas Tilgner, Laurent Poulain, Dominik van Pinxteren, Gerald Spindler, and Hartmut Herrmann
EGUsphere, https://doi.org/10.5194/egusphere-2025-457, https://doi.org/10.5194/egusphere-2025-457, 2025
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In this work, we characterize trends in aerosol pH and its controlling factors over the period of 2010 – 2019 at the Melpitz research station in eastern Germany. We find strong trends in aerosol pH and major inorganic species in response to changing emissions. We conduct a detailed thermodynamic analysis of the aerosol system and discuss implications for controlling PM2.5 in the region.
Rui Li, Yubing Shen, Yumeng Shao, Yining Gao, Ziwei Yao, Qian Liu, Xing Liu, and Guitao Shi
EGUsphere, https://doi.org/10.5194/egusphere-2024-3740, https://doi.org/10.5194/egusphere-2024-3740, 2025
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It is the first time to reveal the global variations of PAHs derivatives in the marine air. We found that marine aerosols in East China Sea (ECS) and Western Pacific (WP) were significantly affected by coal and engine combustion, while those in Bismarck Sea (BS) and East Australian Sea (EAS) were mainly influenced by wildfire and coal combustion. Antarctic Ocean (AO) was dominated by biomass burning and local shipping emissions. This finding help elucidate the mechanism of global PAH cycle.
James Brean, David C. S. Beddows, Eija Asmi, Aki Virkkula, Lauriane L. J. Quéléver, Mikko Sipilä, Floortje Van Den Heuvel, Thomas Lachlan-Cope, Anna Jones, Markus Frey, Angelo Lupi, Jiyeon Park, Young Jun Yoon, Rolf Weller, Giselle L. Marincovich, Gabriela C. Mulena, Roy M. Harrison, and Manuel Dall'Osto
Atmos. Chem. Phys., 25, 1145–1162, https://doi.org/10.5194/acp-25-1145-2025, https://doi.org/10.5194/acp-25-1145-2025, 2025
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Our results emphasise how understanding the geographical variation in surface types across the Antarctic is key to understanding secondary aerosol sources.
Adam E. Thomas, Hayley S. Glicker, Alex B. Guenther, Roger Seco, Oscar Vega Bustillos, Julio Tota, Rodrigo A. F. Souza, and James N. Smith
Atmos. Chem. Phys., 25, 959–977, https://doi.org/10.5194/acp-25-959-2025, https://doi.org/10.5194/acp-25-959-2025, 2025
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We present measurements of the organic composition of ultrafine particles collected from the eastern Amazon, an understudied region that is subjected to increasing human influence. We find that while isoprene chemistry is likely significant for ultrafine-particle growth throughout the year, compounds related to other sources, such as biological-spore emissions and biomass burning, exhibit striking seasonal differences, implying extensive variation in regional ultrafine-particle sources.
Xiufeng Lian, Yongjiang Xu, Fengxian Liu, Long Peng, Xiaodong Hu, Guigang Tang, Xu Dao, Hui Guo, Liwei Wang, Bo Huang, Chunlei Cheng, Lei Li, Guohua Zhang, Xinhui Bi, Xiaofei Wang, Zhen Zhou, and Mei Li
EGUsphere, https://doi.org/10.5194/egusphere-2024-3469, https://doi.org/10.5194/egusphere-2024-3469, 2025
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In this study, we analyzed the mixing state and atmospheric chemical processes of Pb-rich single particles in Beijing. Then, we focused on analyzing the differences in Pb-rich particles between the heating period and non-heating period, as well as the formation mechanism of lead nitrate after coal-to-gas conversion. Our results highlighted the improvement of coal-to-gas conversion on Pb in the particulate.
Chiara Giorio, Anne Monod, Valerio Di Marco, Pierre Herckes, Denise Napolitano, Amy Sullivan, Gautier Landrot, Daniel Warnes, Marika Nasti, Sara D'Aronco, Agathe Gérardin, Nicolas Brun, Karine Desboeufs, Sylvain Triquet, Servanne Chevaillier, Claudia Di Biagio, Francesco Battaglia, Frédéric Burnet, Stuart J. Piketh, Andreas Namwoonde, Jean-François Doussin, and Paola Formenti
EGUsphere, https://doi.org/10.5194/egusphere-2024-4140, https://doi.org/10.5194/egusphere-2024-4140, 2025
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A comparison between the solubility of trace metals in pairs of total suspended particulate (TSP) and fog water samples collected in Henties Bay, Namibia, during the AEROCLO-sA field campaign is presented. We found enhanced solubility of metals in fog samples which we attributed to metal-ligand complexes formation in the early stages of particle activation into droplets which can then remain in a kinetically stable form in fog or lead to the formation of colloidal nanoparticles.
Xu Yu, Min Zhou, Shuhui Zhu, Liping Qiao, Jinjian Li, Yingge Ma, Zijing Zhang, Kezheng Liao, Hongli Wang, and Jian Zhen Yu
EGUsphere, https://doi.org/10.5194/egusphere-2024-4103, https://doi.org/10.5194/egusphere-2024-4103, 2025
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Online measurements of bulk aerosol organic nitrogen (ON), in conjunction with a comprehensive array of source markers, have revealed five emission sources and five potentially significant formation processes of nitrogenous organic aerosols. This study provides first quantitative source analysis of ON aerosol and valuable observational evidence on secondary ON aerosol formation through NH3 and NOx chemistries.
Kumiko Goto-Azuma, Yoshimi Ogawa-Tsukagawa, Kaori Fukuda, Koji Fujita, Motohiro Hirabayashi, Remi Dallmayr, Jun Ogata, Nobuhiro Moteki, Tatsuhiro Mori, Sho Ohata, Yutaka Kondo, Makoto Koike, Sumito Matoba, Moe Kadota, Akane Tsushima, Naoko Nagatsuka, and Teruo Aoki
Atmos. Chem. Phys., 25, 657–683, https://doi.org/10.5194/acp-25-657-2025, https://doi.org/10.5194/acp-25-657-2025, 2025
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Monthly ice core records spanning 350 years from Greenland show trends in refractory black carbon (rBC) concentrations and sizes. rBC levels have increased since the 1870s due to the inflow of anthropogenic rBC, with larger diameters than those from biomass burning (BB) rBC. High summer BB rBC peaks may reduce the ice sheet albedo, but BB rBC showed no increase until the early 2000s. These results are vital for validating aerosol and climate models.
Petr Vodička, Kimitaka Kawamura, Bhagawati Kunwar, Lin Huang, Dhananjay K. Deshmukh, Md. Mozammel Haque, Sangeeta Sharma, and Leonard Barrie
EGUsphere, https://doi.org/10.5194/egusphere-2024-3656, https://doi.org/10.5194/egusphere-2024-3656, 2025
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Carbonate carbon (CC) is not negligible in Arctic total suspended particles (TSP). If not considered, CC biases the contribution of elemental and organic carbon. CC content in TSP was strongly reflected in the δ13C values of total carbon (TC). Carbon contribution from CaCO3 supports strong dependence of CC and δ13C on Ca. Finally, two hypothetical CC sources were identified based on the analysis of air mass back trajectories – dust resuspension and marine microorganisms.
Mingjie Kang, Mengying Bao, Wenhuai Song, Aduburexiati Abulimiti, Changliu Wu, Fang Cao, Sönke Szidat, and Yanlin Zhang
Atmos. Chem. Phys., 25, 73–91, https://doi.org/10.5194/acp-25-73-2025, https://doi.org/10.5194/acp-25-73-2025, 2025
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Reports on molecular-level knowledge of high-temporal-resolution particulate matter ≤2.5 µm in diameter (PM2.5) on hazy days are limited. We investigated various PM2.5 species and their sources. The results show biomass burning (BB) was the main source of organic carbon. Moreover, BB enhanced fungal spore emissions and secondary aerosol formation. The contribution of non-fossil sources increased with increasing haze pollution, suggesting BB may be an important driver of haze events in winter.
Gregory P. Schill, Karl D. Froyd, Daniel M. Murphy, Christina J. Williamson, Charles A. Brock, Tomás Sherwen, Mat J. Evans, Eric A. Ray, Eric C. Apel, Rebecca S. Hornbrook, Alan J. Hills, Jeff Peischl, Thomas B. Ryerson, Chelsea R. Thompson, Ilann Bourgeois, Donald R. Blake, Joshua P. DiGangi, and Glenn S. Diskin
Atmos. Chem. Phys., 25, 45–71, https://doi.org/10.5194/acp-25-45-2025, https://doi.org/10.5194/acp-25-45-2025, 2025
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Using single-particle mass spectrometry, we show that trace concentrations of bromine and iodine are ubiquitous in remote tropospheric aerosol and suggest that aerosols are an important part of the global reactive iodine budget. Comparisons to a global climate model with detailed iodine chemistry are favorable in the background atmosphere; however, the model cannot replicate our measurements near the ocean surface, in biomass burning plumes, and in the stratosphere.
Yanqin Ren, Zhenhai Wu, Fang Bi, Hong Li, Haijie Zhang, Junling Li, Rui Gao, Fangyun Long, Zhengyang Liu, Yuanyuan Ji, and Gehui Wang
EGUsphere, https://doi.org/10.5194/egusphere-2024-3678, https://doi.org/10.5194/egusphere-2024-3678, 2025
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The daily concentrations of Polycyclic aromatic hydrocarbons (PAHs), oxygenated PAHs (OPAHs), and nitrated phenols (NPs) in PM2.5 were all increased during the heating season. Biomass burning was identified to be the primary source of these aromatic compounds, particularly for PAHs. Phenol and nitrobenzene are two main primary precursors for 4NP, with phenol showing lower reaction barriers. P-Cresol was identified as the primary precursor for the formation of 4-methyl-5-nitrocatechol.
Capucine Camin, François Lacan, Catherine Pradoux, Marie Labatut, Anne Johansen, and James W. Murray
EGUsphere, https://doi.org/10.5194/egusphere-2024-3777, https://doi.org/10.5194/egusphere-2024-3777, 2024
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This manuscript presents the chemical composition of aerosols (> 1µm) over the Equatorial and Tropical Pacific Ocean, presenting the first measurements of iron isotopes in aerosols from this region. Iron concentrations and isotopes were determined using a Neptune MC-ICPMS. Our data analysis reveals that a significant portion of the aerosols undergo dissolution and removal during atmospheric transport. These findings contribute to original conclusions about the chemistry and physics of aerosols.
Andreas Aktypis, Dontavious J. Sippial, Christina N. Vasilakopoulou, Angeliki Matrali, Christos Kaltsonoudis, Andrea Simonati, Marco Paglione, Matteo Rinaldi, Stefano Decesari, and Spyros N. Pandis
Atmos. Chem. Phys., 24, 13769–13791, https://doi.org/10.5194/acp-24-13769-2024, https://doi.org/10.5194/acp-24-13769-2024, 2024
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A dual-chamber system was deployed in two different environments (Po Valley, Italy, and Pertouli forest, Greece) to study the potential of ambient air directly injected into the chambers, to form secondary organic aerosol (SOA). In the Po Valley, the system reacts rapidly, forming large amounts of SOA, while in Pertouli the SOA formation chemistry appears to have been practically terminated before the beginning of most experiments, so there is little additional SOA formation potential left.
Amna Ijaz, Brice Temime-Roussel, Benjamin Chazeau, Sarah Albertin, Stephen R. Arnold, Brice Barrett, Slimane Bekki, Natalie Brett, Meeta Cesler-Maloney, Elsa Dieudonne, Kayane K. Dingilian, Javier G. Fochesatto, Jingqiu Mao, Allison Moon, Joel Savarino, William Simpson, Rodney J. Weber, Kathy S. Law, and Barbara D'Anna
EGUsphere, https://doi.org/10.5194/egusphere-2024-3789, https://doi.org/10.5194/egusphere-2024-3789, 2024
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Fairbanks is among the most polluted cities with the highest particulate matter (PM) levels in the US during winters. Highly time-resolved measurements of the sub-micron PM elucidated residential heating with wood and oil and hydrocarbon-like organics from traffic, as well as sulphur-containing organic aerosol, to be the key pollution sources. Remarkable differences existed between complementary instruments, warranting the deployment of multiple tools at sites with wide-ranging influences.
Fredrik Mattsson, Almuth Neuberger, Liine Heikkinen, Yvette Gramlich, Marco Paglione, Matteo Rinaldi, Stefano Decesari, Paul Zieger, Ilona Riipinen, and Claudia Mohr
EGUsphere, https://doi.org/10.5194/egusphere-2024-3629, https://doi.org/10.5194/egusphere-2024-3629, 2024
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This study investigated aerosol-cloud interactions, focusing on organic nitrogen (ON) formation in the aqueous phase. Measurements were conducted in wintertime Italian Po Valley, using aerosol mass spectrometry. The fog was enriched in more hygroscopic inorganic compounds and ON, containing e.g. imidazoles. The formation of imidazole by aerosol-fog interactions could be confirmed for the first time in atmospheric observations. Findings highlight the role of fog in nitrogen aerosol formation.
Jie Zhang, Tianyu Zhu, Alexandra Catena, Yaowei Li, Margaret J. Schwab, Pengfei Liu, Akua Asa-Awuku, and James Schwab
Atmos. Chem. Phys., 24, 13445–13456, https://doi.org/10.5194/acp-24-13445-2024, https://doi.org/10.5194/acp-24-13445-2024, 2024
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This study shows the derived organic aerosol hygroscopicity under high-humidity conditions based on a simple optical scatter monitor system, including two nephelometric monitors (pDR-1500), when the aerosol chemical composition is already known.
Wei Yuan, Ru-Jin Huang, Chao Luo, Lu Yang, Wenjuan Cao, Jie Guo, and Huinan Yang
Atmos. Chem. Phys., 24, 13219–13230, https://doi.org/10.5194/acp-24-13219-2024, https://doi.org/10.5194/acp-24-13219-2024, 2024
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We characterized water-soluble oxidative potential (OP) levels in wintertime PM2.5 in the south and north of Beijing. Our results show that the volume-normalized dithiothreitol (DTTv) in the north was comparable to that in the south, while the mass-normalized dithiothreitol (DTTm) in the north was almost twice that in the south. Traffic-related emissions and biomass burning were the main sources of DTTv in the south, and traffic-related emissions contributed the most to DTTv in the north.
Mingfu Cai, Chenshuo Ye, Bin Yuan, Shan Huang, E Zheng, Suxia Yang, Zelong Wang, Yi Lin, Tiange Li, Weiwei Hu, Wei Chen, Qicong Song, Wei Li, Yuwen Peng, Baoling Liang, Qibin Sun, Jun Zhao, Duohong Chen, Jiaren Sun, Zhiyong Yang, and Min Shao
Atmos. Chem. Phys., 24, 13065–13079, https://doi.org/10.5194/acp-24-13065-2024, https://doi.org/10.5194/acp-24-13065-2024, 2024
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This study investigated the daytime secondary organic aerosol (SOA) formation in urban plumes. We observed a significant daytime SOA formation through gas–particle partitioning when the site was affected by urban plumes. A box model simulation indicated that urban pollutants (nitrogen oxide and volatile organic compounds) could enhance the oxidizing capacity, while the elevated volatile organic compounds were mainly responsible for promoting daytime SOA formation.
Qingxiao Meng, Yunjiang Zhang, Sheng Zhong, Jie Fang, Lili Tang, Yongcai Rao, Minfeng Zhou, Jian Qiu, Xiaofeng Xu, Jean-Eudes Petit, Olivier Favez, and Xinlei Ge
EGUsphere, https://doi.org/10.5194/egusphere-2024-2776, https://doi.org/10.5194/egusphere-2024-2776, 2024
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We developed a new method to reconstruct missing elemental carbon (EC) data in four Chinese cities from 2013 to 2023. Using machine learning, we accurately filled data gaps and introduced a new approach to analyze EC trends. Our findings reveal a significant decline in EC due to stricter pollution controls, though this slowed after 2020. This study provides a versatile framework for addressing data gaps and supports strategies to reduce urban air pollution and its climate impacts.
Yingjie Shen, Rudra P. Pokhrel, Amy P. Sullivan, Ezra J. T. Levin, Lauren A. Garofalo, Delphine K. Farmer, Wade Permar, Lu Hu, Darin W. Toohey, Teresa Campos, Emily V. Fischer, and Shane M. Murphy
Atmos. Chem. Phys., 24, 12881–12901, https://doi.org/10.5194/acp-24-12881-2024, https://doi.org/10.5194/acp-24-12881-2024, 2024
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The magnitude and evolution of brown carbon (BrC) absorption remain unclear, with uncertainty in climate models. Data from the WE-CAN airborne experiment show that model parameterizations overestimate the mass absorption cross section (MAC) of BrC. Observed decreases in BrC absorption with chemical markers are due to decreasing organic aerosol (OA) mass rather than a decreasing BrC MAC, which is currently implemented in models. Water-soluble BrC contributes 23 % of total absorption at 660 nm.
Qun He, Zhaowen Wang, Houfeng Liu, Pengju Xu, Rongbao Duan, Caihong Xu, Jianmin Chen, and Min Wei
Atmos. Chem. Phys., 24, 12775–12792, https://doi.org/10.5194/acp-24-12775-2024, https://doi.org/10.5194/acp-24-12775-2024, 2024
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Coastal environments provide an ideal setting for investigating the intermixing of terrestrial and marine aerosols. Terrestrial air mass constituted a larger number of microbes from anthropogenic and soil emissions, whereas saprophytic and gut microbes were predominant in marine samples. Mixed air masses indicated a fusion of marine and terrestrial aerosols, characterized by alterations in the ratio of pathogenic and saprophytic microbes when compared to either terrestrial or marine samples.
Rime El Asmar, Zongrun Li, David J. Tanner, Yongtao Hu, Susan O'Neill, L. Gregory Huey, M. Talat Odman, and Rodney J. Weber
Atmos. Chem. Phys., 24, 12749–12773, https://doi.org/10.5194/acp-24-12749-2024, https://doi.org/10.5194/acp-24-12749-2024, 2024
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Prescribed burning is an important method for managing ecosystems and preventing wildfires. However, smoke from prescribed fires can have a significant impact on air quality. Here, using a network of fixed sites and sampling throughout an extended prescribed burning period in 2 different years, we characterize emissions and evolutions of up to 8 h of PM2.5 mass, black carbon (BC), and brown carbon (BrC) in smoke from burning of forested lands in the southeastern USA.
Matthew Boyer, Diego Aliaga, Lauriane L. J. Quéléver, Silvia Bucci, Hélène Angot, Lubna Dada, Benjamin Heutte, Lisa Beck, Marina Duetsch, Andreas Stohl, Ivo Beck, Tiia Laurila, Nina Sarnela, Roseline C. Thakur, Branka Miljevic, Markku Kulmala, Tuukka Petäjä, Mikko Sipilä, Julia Schmale, and Tuija Jokinen
Atmos. Chem. Phys., 24, 12595–12621, https://doi.org/10.5194/acp-24-12595-2024, https://doi.org/10.5194/acp-24-12595-2024, 2024
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We analyze the seasonal cycle and sources of gases that are relevant for the formation of aerosol particles in the central Arctic. Since theses gases can form new particles, they can influence Arctic climate. We show that the sources of these gases are associated with changes in the Arctic environment during the year, especially with respect to sea ice. Therefore, the concentration of these gases will likely change in the future as the Arctic continues to warm.
Binyu Xiao, Fan Zhang, Zeyu Liu, Yan Zhang, Rui Li, Can Wu, Xinyi Wan, Yi Wang, Yubao Chen, Yong Han, Min Cui, Libo Zhang, Yingjun Chen, and Gehui Wang
EGUsphere, https://doi.org/10.5194/egusphere-2024-3433, https://doi.org/10.5194/egusphere-2024-3433, 2024
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Intermediate/semi-volatile organic compounds in both gas and particle phases from ship exhausts are enhanced due to the switch of fuels from low-sulfur to ultra-low-sulfur. The findings indicate that optimization is necessary for the forthcoming global implementation of an ultra-low-sulfur oil policy. Besides, we find that organic diagnostic markers of hopanes, in conjunction with the ratio of octadecanoic to tetradecanoic could be considered as potential tracers for HFO exhausts.
Mutian Ma, Laura-Hélèna Rivellini, Yichen Zong, Markus Kraft, Liya E. Yu, and Alex King Yin Lee
EGUsphere, https://doi.org/10.5194/egusphere-2024-3240, https://doi.org/10.5194/egusphere-2024-3240, 2024
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This work advances our understanding of emission and atmospheric evolution of black carbon (BC) particles in Singapore, a complex urban environment impacted by multiple local and regional combustion sources, based on the improved source apportionment analysis of real-time aerosol mass spectrometry measurement.
Cited articles
Akimoto, H. and Narita, H.: Distribution of SO2, NOx and CO2 emissions
from fuel combustion and industrial activities in Asia with
Alexander, D. T. L., Crozier, P. A., and Anderson, J. R.: Brown Carbon
Spheres in East Asian Outflow and Their Optical Properties, Science, 321,
833–836, https://doi.org/10.1126/science.1155296, 2008.
Ancellet, G., Pelon, J., Totems, J., Chazette, P., Bazureau, A., Sicard, M., Di Iorio, T., Dulac, F., and Mallet, M.: Long-range transport and mixing of aerosol sources during the 2013 North American biomass burning episode: analysis of multiple lidar observations in the western Mediterranean basin, Atmos. Chem. Phys., 16, 4725–4742, https://doi.org/10.5194/acp-16-4725-2016, 2016.
Andreae, M. O. and Gelencsér, A.: Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols, Atmos. Chem. Phys., 6, 3131–3148, https://doi.org/10.5194/acp-6-3131-2006, 2006.
Aouizerats, B., van der Werf, G. R., Balasubramanian, R., and Betha, R.: Importance of transboundary transport of biomass burning emissions to regional air quality in Southeast Asia during a high fire event, Atmos. Chem. Phys., 15, 363–373, https://doi.org/10.5194/acp-15-363-2015, 2015.
Bao, M., Cao, F., Chang, Y., Zhang, Y.-L., Gao, Y., Liu, X., Zhang, Y.,
Zhang, W., Tang, T., Xu, Z., Liu, S., Lee, X., Li, J., and Zhang, G.:
Characteristics and origins of air pollutants and carbonaceous aerosols
during wintertime haze episodes at a rural site in the Yangtze River Delta,
China, Atmos. Pollut. Res., 8, 900–911,
https://doi.org/10.1016/j.apr.2017.03.001, 2017.
Bikkina, S.: Brown carbon in atmospheric outflow from the Indo-Gangetic Plain: Mass absorption efficiency and temporal variability, Atmos. Environ., 89, 835–843, https://doi.org/10.1016/j.atmosenv.2014.03.030, 2014.
Bohren, C. F. and Huffman, D. R.: Absorption and scattering of light by
small particles, Wiley-Inter-science Publication, 181–185, 1998.
Bond, T. C.: Spectral dependence of visible light absorption by carbonaceous
particles emitted from coal combustion, Geophys. Res. Lett., 28,
4075–4078, https://doi.org/10.1029/2001GL013652, 2001.
Bond, T. C. and Bergstrom, R. W.: Light Absorption by Carbonaceous
Particles: An Investigative Review, Aerosol Sci. Tech., 40,
27–67, https://doi.org/10.1080/02786820500421521, 2006.
Bones, D. L., Henricksen, D. K., Mang, S. A., Gonsior, M., Bateman, A. P., Nguyen, T. B., Cooper, W. J., and Nizkorodov, S. A.: Appearance of strong absorbers and fluorophores in limonene-O3 secondary organic aerosol due to
Bosch, C., Andersson, A., Kirillova, E. N., Budhavant, K., Tiwari, S.,
Praveen, P. S., Russell, L. M., Beres, N. D., Ramanathan, V., and
Gustafsson, Ö.: Source-diagnostic dual-isotope composition and optical
properties of water-soluble organic carbon and elemental carbon in the South
Asian outflow intercepted over the Indian Ocean, J. Geophys.
Res.-Atmos., 119, 11743–711759, https://doi.org/10.1002/2014JD022127, 2014.
Cao, F., Zhang, S.-C., Kawamura, K., and Zhang, Y.-L.: Inorganic markers,
carbonaceous components and stable carbon isotope from biomass burning
aerosols in Northeast China, Sci. Total Environ., 572,
1244–1251, https://doi.org/10.1016/j.scitotenv.2015.09.099,
2016.
Cao, J. J., Wu, F., Chow, J. C., Lee, S. C., Li, Y., Chen, S. W., An, Z. S., Fung, K. K., Watson, J. G., Zhu, C. S., and Liu, S. X.: Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in Xi'an, China, Atmos. Chem. Phys., 5, 3127–3137, https://doi.org/10.5194/acp-5-3127-2005, 2005.
Chakrabarty, R. K., Gyawali, M., Yatavelli, R. L. N., Pandey, A., Watts, A. C., Knue, J., Chen, L.-W. A., Pattison, R. R., Tsibart, A., Samburova, V., and Moosmüller, H.: Brown carbon aerosols from burning of boreal peatlands: microphysical properties, emission factors, and implications for direct radiative forcing, Atmos. Chem. Phys., 16, 3033–3040, https://doi.org/10.5194/acp-16-3033-2016, 2016.
Chen, D., Cui, H., Zhao, Y., Yin, L., Lu, Y., and Wang, Q.: A two-year study
of carbonaceous aerosols in ambient PM2.5 at a regional background site for
western Yangtze River Delta, China, Atmos. Res., 183, 351–361, https://doi.org/10.1016/j.atmosres.2016.09.004, 2017.
Chen, J., Li, C., Ristovski, Z., Milic, A., Gu, Y., Islam, M. S., Wang, S.,
Hao, J., Zhang, H., He, C., Guo, H., Fu, H., Miljevic, B., Morawska, L.,
Thai, P., Lam, Y. F., Pereira, G., Ding, A., Huang, X., and Dumka, U. C.: A
review of biomass burning: Emissions and impacts on air quality, health and
climate in China, Sci. Total Environ., 579, 1000–1034,
https://doi.org/10.1016/j.scitotenv.2016.11.025, 2017.
Chen, Y. and Bond, T. C.: Light absorption by organic carbon from wood combustion, Atmos. Chem. Phys., 10, 1773–1787, https://doi.org/10.5194/acp-10-1773-2010, 2010.
Cheng, Y., He, K.-B., Zheng, M., Duan, F.-K., Du, Z.-Y., Ma, Y.-L., Tan, J.-H., Yang, F.-M., Liu, J.-M., Zhang, X.-L., Weber, R. J., Bergin, M. H., and Russell, A. G.: Mass absorption efficiency of elemental carbon and water-soluble organic carbon in Beijing, China, Atmos. Chem. Phys., 11, 11497–11510, https://doi.org/10.5194/acp-11-11497-2011, 2011.
Cheng, Y., Engling, G., He, K.-B., Duan, F.-K., Ma, Y.-L., Du, Z.-Y., Liu, J.-M., Zheng, M., and Weber, R. J.: Biomass burning contribution to Beijing aerosol, Atmos. Chem. Phys., 13, 7765–7781, https://doi.org/10.5194/acp-13-7765-2013, 2013.
Cheng, Y., He, K.-b., Du, Z.-y., Engling, G., Liu, J.-m., Ma, Y.-l., Zheng,
M., and Weber, R. J.: The characteristics of brown carbon aerosol during
winter in Beijing, Atmos. Environ., 127, 355–364, https://doi.org/10.1016/j.atmosenv.2015.12.035, 2016.
Cheng, Z., Wang, S., Fu, X., Watson, J. G., Jiang, J., Fu, Q., Chen, C., Xu, B., Yu, J., Chow, J. C., and Hao, J.: Impact of biomass burning on haze pollution in the Yangtze River delta, China: a case study in summer 2011, Atmos. Chem. Phys., 14, 4573–4585, https://doi.org/10.5194/acp-14-4573-2014, 2014.
Choudhary, V., Rajput, P., Singh, D. K., Singh, A. K., and Gupta, T.: Light
absorption characteristics of brown carbon during foggy and non-foggy
episodes over the Indo-Gangetic Plain, Atmos. Pollut. Res., 9, 494–501,
https://doi.org/10.1016/j.apr.2017.11.012, 2017.
Drewnick, F., Hings, S. S., Curtius, J., Eerdekens, G., and Williams, J.:
Measurement of fine particulate and gas-phase species during the New Year's
fireworks 2005 in Mainz, Germany, Atmos. Environ., 40, 4316–4327,
https://doi.org/10.1016/j.atmosenv.2006.03.040, 2006.
Du, Z., He, K., Cheng, Y., Duan, F., Ma, Y., Liu, J., Zhang, X., Zheng, M.,
and Weber, R.: A yearlong study of water-soluble organic carbon in Beijing
I: Sources and its primary vs. secondary nature, Atmos. Environ.,
92, 514–521, https://doi.org/10.1016/j.atmosenv.2014.04.060,
2014a.
Du, Z., He, K., Cheng, Y., Duan, F., Ma, Y., Liu, J., Zhang, X., Zheng, M.,
and Weber, R.: A yearlong study of water-soluble organic carbon in Beijing
II: Light absorption properties, Atmos. Environ., 89, 235–241,
https://doi.org/10.1016/j.atmosenv.2014.02.022, 2014b.
Duan, F., Liu, X., Yu, T., and Cachier, H.: Identification and estimate of
biomass burning contribution to the urban aerosol organic carbon
concentrations in Beijing, Atmos. Environ., 38, 1275–1282,
https://doi.org/10.1016/j.atmosenv.2003.11.037, 2004.
Engling, G., Carrico, C. M., Kreidenweis, S. M., Collett, J. L., Day, D. E.,
Malm, W. C., Lincoln, E., Min Hao, W., Iinuma, Y., and Herrmann, H.:
Determination of levoglucosan in biomass combustion aerosol by
high-performance anion-exchange chromatography with pulsed amperometric
detection, Atmos. Environ., 40, 299–311, https://doi.org/10.1016/j.atmosenv.2005.12.069, 2006.
Engling, G., Lee, J. J., Tsai, Y.-W., Lung, S.-C. C., Chou, C. C. K., and
Chan, C.-Y.: Size-Resolved Anhydrosugar Composition in Smoke Aerosol from
Controlled Field Burning of Rice Straw, Aerosol Sci. Tech., 43,
662–672, https://doi.org/10.1080/02786820902825113, 2009.
Favez, O., El Haddad, I., Piot, C., Boréave, A., Abidi, E., Marchand, N., Jaffrezo, J.-L., Besombes, J.-L., Personnaz, M.-B., Sciare, J., Wortham, H., George, C., and D'Anna, B.: Inter-comparison of source apportionment models for the estimation of wood burning aerosols during wintertime in an Alpine city (Grenoble, France), Atmos. Chem. Phys., 10, 5295–5314, https://doi.org/10.5194/acp-10-5295-2010, 2010.
Feng, Y., Ramanathan, V., and Kotamarthi, V. R.: Brown carbon: a significant atmospheric absorber of solar radiation?, Atmos. Chem. Phys., 13, 8607–8621, https://doi.org/10.5194/acp-13-8607-2013, 2013.
Fraser, M. P. and Lakshmanan, K.: Using Levoglucosan as a Molecular Marker
for the Long-Range Transport of Biomass Combustion Aerosols, Environ.
Sci. Technol., 34, 4560–4564, https://doi.org/10.1021/es991229l, 2000.
Gao, S., Hegg, D. A., Hobbs, P. V., Kirchstetter, T. W., Magi, B. I., and
Sadilek, M.: Water-soluble organic components in aerosols associated with
savanna fires in southern Africa: Identification, evolution, and
distribution, J. Geophys. Res.-Atmos., 108, 8491, https://doi.org/10.1029/2002JD002324, 2003.
Gilman, J. B., Lerner, B. M., Kuster, W. C., Goldan, P. D., Warneke, C., Veres, P. R., Roberts, J. M., de Gouw, J. A., Burling, I. R., and Yokelson, R. J.: Biomass burning emissions and potential air quality impacts of volatile organic compounds and other trace gases from fuels common in the US, Atmos. Chem. Phys., 15, 13915–13938, https://doi.org/10.5194/acp-15-13915-2015, 2015.
Graham, B., Guyon, P., Taylor, P. E., Artaxo, P., Maenhaut, W., Glovsky, M.
M., Flagan, R. C., and Andreae, M. O.: Organic compounds present in the
natural Amazonian aerosol: Characterization by gas chromatography-mass
spectrometry, J. Geophys. Res.-Atmos., 108, 4766, https://doi.org/10.1029/2003jd003990, 2003.
Grythe, H., Kristiansen, N. I., Groot Zwaaftink, C. D., Eckhardt, S., Ström, J., Tunved, P., Krejci, R., and Stohl, A.: A new aerosol wet removal scheme for the Lagrangian particle model FLEXPART v10, Geosci. Model Dev., 10, 1447–1466, https://doi.org/10.5194/gmd-10-1447-2017, 2017.
Haque, Md. M., Kawamura, K., Deshmukh, D. K., Fang, C., Song, W., Mengying, B., and Zhang, Y.-L.: Characterization of organic aerosols from a Chinese megacity during winter: predominance of fossil fuel combustion, Atmos. Chem. Phys., 19, 5147–5164, https://doi.org/10.5194/acp-19-5147-2019, 2019.
Hecobian, A., Zhang, X., Zheng, M., Frank, N., Edgerton, E. S., and Weber, R. J.: Water-Soluble Organic Aerosol material and the light-absorption characteristics of aqueous extracts measured over the Southeastern United States, Atmos. Chem. Phys., 10, 5965–5977, https://doi.org/10.5194/acp-10-5965-2010, 2010.
Hess, M., Koepke, P., and Schult, I.: Optical Properties of Aerosols and
Clouds: The Software Package OPAC, B. Am. Meteorol.
Soc., 79, 831–844, https://doi.org/10.1175/1520-0477(1998)079<0831:OPOAAC>2.0.CO;2, 1998.
Hoffer, A., Gelencsér, A., Guyon, P., Kiss, G., Schmid, O., Frank, G. P., Artaxo, P., and Andreae, M. O.: Optical properties of humic-like substances (HULIS) in biomass-burning aerosols, Atmos. Chem. Phys., 6, 3563–3570, https://doi.org/10.5194/acp-6-3563-2006, 2006.
Hou, B., Zhuang, G., Zhang, R., Liu, T., Guo, Z., and Chen, Y.: The
implication of carbonaceous aerosol to the formation of haze: Revealed from
the characteristics and sources of OC/EC over a mega-city in China, J.
Hazard. Mater., 190, 529–536,
https://doi.org/10.1016/j.jhazmat.2011.03.072, 2011.
Huang, R.-J., Zhang, Y., Bozzetti, C., Ho, K.-F., Cao, J.-J., Han, Y.,
Daellenbach, K. R., Slowik, J. G., Platt, S. M., Canonaco, F., Zotter, P.,
Wolf, R., Pieber, S. M., Bruns, E. A., Crippa, M., Ciarelli, G.,
Piazzalunga, A., Schwikowski, M., Abbaszade, G., Schnelle-Kreis, J.,
Zimmermann, R., An, Z., Szidat, S., Baltensperger, U., Haddad, I. E., and
Prévôt, A. S. H.: High secondary aerosol contribution to particulate
pollution during haze events in China, Nature, 514, 218–222, https://doi.org/10.1038/nature13774,
2014.
Iacono Michael, J., Mlawer Eli, J., Clough Shepard, A., and Morcrette, J.
J.: Impact of an improved longwave radiation model, RRTM, on the energy
budget and thermodynamic properties of the NCAR community climate model,
CCM3, J. Geophys. Res.-Atmos., 105, 14873–14890, https://doi.org/10.1029/2000JD900091, 2000.
Iacono Michael, J., Delamere Jennifer, S., Mlawer Eli, J., Shephard Mark,
W., Clough Shepard, A., and Collins William, D.: Radiative forcing by
long-lived greenhouse gases: Calculations with the AER radiative transfer
models, J. Geophys. Res.-Atmos., 113, D13103, https://doi.org/10.1029/2008JD009944, 2008.
Jaffrezo, J.-L., Aymoz, G., Delaval, C., and Cozic, J.: Seasonal variations of the water soluble organic carbon mass fraction of aerosol in two valleys of the French Alps, Atmos. Chem. Phys., 5, 2809–2821, https://doi.org/10.5194/acp-5-2809-2005, 2005.
Jung, C. H., Lee, J. Y., and Kim, Y. P.: Estimation of aerosol optical
properties considering hygroscopicity and light absorption, Atmos.
Environ., 105, 191–201, https://doi.org/10.1016/j.atmosenv.2015.01.058, 2015.
Jung, J., Lee, S., Kim, H., Kim, D., Lee, H., and Oh, S.: Quantitative
determination of the biomass-burning contribution to atmospheric
carbonaceous aerosols in Daejeon, Korea, during the rice-harvest period,
Atmos. Environ., 89, 642–650,
https://doi.org/10.1016/j.atmosenv.2014.03.010, 2014.
Jung, J., Lee, D., Jeong, H., Lee, S., and Oh, S.: Chemical characterization
of the long-range transport of firework/firecracker emissions over the
Korean Peninsula: A novel indicator of Asian continental outflows,
Atmos. Environ., 178, 223–230,
https://doi.org/10.1016/j.atmosenv.2018.02.013, 2018.
Kendrick, C. M., Koonce, P., and George, L. A.: Diurnal and seasonal
variations of NO, NO2 and PM2.5 mass as a function of traffic volumes
alongside an urban arterial, Atmos. Environ., 122, 133–141,
https://doi.org/10.1016/j.atmosenv.2015.09.019, 2015.
Kim, H., Kim, J. Y., Jin, H. C., Lee, J. Y., and Lee, S. P.: Seasonal
variations in the light-absorbing properties of water-soluble and insoluble
organic aerosols in Seoul, Korea, Atmos. Environ., 129, 234–242,
https://doi.org/10.1016/j.atmosenv.2016.01.042, 2016.
Kirchstetter, T. W., Novakov, T., and Hobbs, P. V.: Evidence that the
spectral dependence of light absorption by aerosols is affected by organic
carbon, J. Geophys. Res.-Atmos., 109, D21208, https://doi.org/10.1029/2004jd004999, 2004.
Kirillova, E. N., Andersson, A., Han, J., Lee, M., and Gustafsson, Ö.: Sources and light absorption of water-soluble organic carbon aerosols in the outflow from northern China, Atmos. Chem. Phys., 14, 1413–1422, https://doi.org/10.5194/acp-14-1413-2014, 2014a.
Kirillova, E. N., Andersson, A., Tiwari, S., Srivastava, A. K., Bisht, D.
S., and Gustafsson, Ö.: Water-soluble organic carbon aerosols during a
full New Delhi winter: Isotope-based source apportionment and optical
properties, J. Geophys. Res.-Atmos., 119, 3476–3485, https://doi.org/10.1002/2013JD020041, 2014b.
Kunwar, B. and Kawamura, K.: One-year observations of carbonaceous and nitrogenous components and major ions in the aerosols from subtropical Okinawa Island, an outflow region of Asian dusts, Atmos. Chem. Phys., 14, 1819–1836, https://doi.org/10.5194/acp-14-1819-2014, 2014.
Lack, D. A., Langridge, J. M., Bahreini, R., Cappa, C. D., Middlebrook, A.
M., and Schwarz, J. P.: Brown carbon and internal mixing in biomass burning
particles, P. Natl. Acad. Sci. USA, 109, 14802, https://doi.org/10.1073/pnas.1206575109, 2012.
Lai, S.-c., Zou, S.-c., Cao, J.-j., Lee, S.-c., and Ho, K.-f.:
Characterizing ionic species in PM2.5 and PM10 in four Pearl River Delta
cities, South China, J. Environ. Sci., 19, 939–947,
https://doi.org/10.1016/S1001-0742(07)60155-7, 2007.
Laskin, A., Laskin, J., and Nizkorodov, S. A.: Chemistry of Atmospheric
Brown Carbon, Chem. Rev., 115, 4335–4382, https://doi.org/10.1021/cr5006167, 2015.
Leithead, A., Li, S. M., Hoff, R., Yu, C., and Brook, J.: Levoglucosan and
dehydroabietic acid: Evidence of biomass burning impact on aerosols in the
Lower Fraser Valley, Atmos. Environ., 40, 2721–2734, 2006.
Li, B., Zhang, J., Zhao, Y., Yuan, S., Zhao, Q., Shen, G., and Wu, H.:
Seasonal variation of urban carbonaceous aerosols in a typical city Nanjing
in Yangtze River Delta, China, Atmos. Environ., 106, 223–231,
https://doi.org/10.1016/j.atmosenv.2015.01.064, 2015.
Li, C., Yan, F., Kang, S., Chen, P., Hu, Z., Gao, S., Qu, B., and
Sillanpää, M.: Light absorption characteristics of carbonaceous
aerosols in two remote stations of the southern fringe of the Tibetan
Plateau, China, Atmos. Environ., 143, 79–85, https://doi.org/10.1016/j.atmosenv.2016.08.042, 2016.
Li, J.: Comments on “On the Choice of Average Solar Zenith Angle”, J.
Atmos. Sci., 74, 1669–1676, https://doi.org/10.1175/JAS-D-16-0185.1, 2017.
Li, K., Liao, H., Mao, Y., and Ridley, D. A.: Source sector and region
contributions to concentration and direct radiative forcing of black carbon
in China, Atmos. Environ., 124, 351–366,
https://doi.org/10.1016/j.atmosenv.2015.06.014, 2016.
Li, X., Chen, M., Le, H. P., Wang, F., Guo, Z., Iinuma, Y., Chen, J., and
Herrmann, H.: Atmospheric outflow of PM2.5 saccharides from megacity
Shanghai to East China Sea: Impact of biological and biomass burning
sources, Atmos. Environ., 143, 1–14,
https://doi.org/10.1016/j.atmosenv.2016.08.039, 2016.
Lin, G., Penner, J. E., Flanner, M. G., Sillman, S., Xu, L., and Zhou, C.:
Radiative forcing of organic aerosol in the atmosphere and on snow: Effects
of SOA and brown carbon, J. Geophys. Res.-Atmos., 119,
7453–7476, https://doi.org/10.1002/2013JD021186, 2014.
Liu, J., Li, J., Zhang, Y., Liu, D., Ding, P., Shen, C., Shen, K., He, Q.,
Ding, X., Wang, X., Chen, D., Szidat, S., and Zhang, G.: Source
Apportionment Using Radiocarbon and Organic Tracers for PM2.5 Carbonaceous
Aerosols in Guangzhou, South China: Contrasting Local- and Regional-Scale
Haze Events, Environ. Sci. Technol., 48, 12002–12011, https://doi.org/10.1021/es503102w, 2014a.
Liu, J., Scheuer, E., Dibb, J., Ziemba, L. D., Thornhill, K. L., Anderson,
B. E., Wisthaler, A., Mikoviny, T., Devi, J. J., Bergin, M., and Weber, R.
J.: Brown carbon in the continental troposphere, Geophys. Res.
Lett., 41, 2191–2195, https://doi.org/10.1002/2013GL058976, 2014b.
Liu, J., Scheuer, E., Dibb, J., Diskin, G. S., Ziemba, L. D., Thornhill, K. L., Anderson, B. E., Wisthaler, A., Mikoviny, T., Devi, J. J., Bergin, M., Perring, A. E., Markovic, M. Z., Schwarz, J. P., Campuzano-Jost, P., Day, D. A., Jimenez, J. L., and Weber, R. J.: Brown carbon aerosol in the North American continental troposphere: sources, abundance, and radiative forcing, Atmos. Chem. Phys., 15, 7841–7858, https://doi.org/10.5194/acp-15-7841-2015, 2015.
Liu, J., Lin, P., Laskin, A., Laskin, J., Kathmann, S. M., Wise, M., Caylor, R., Imholt, F., Selimovic, V., and Shilling, J. E.: Optical properties and aging of light-absorbing secondary organic aerosol, Atmos. Chem. Phys., 16, 12815–12827, https://doi.org/10.5194/acp-16-12815-2016, 2016.
Mlawer, E. J. and Clough, S. A.: Shortwave and longwave enhancements in the
rapid radiative transfer model, Seventh Atmospheric Radiation Measurement
(ARM) Science Team Meeting, U.S. Department of Energy, 499–504, 1998.
Mochida, M., Kawamura, K., Fu, P., and Takemura, T.: Seasonal variation of
levoglucosan in aerosols over the western North Pacific and its assessment
as a biomass-burning tracer, Atmos. Environ., 44, 3511–3518,
https://doi.org/10.1016/j.atmosenv.2010.06.017, 2010.
Moffet, R. C. and Prather, K. A.: In-situ measurements of the mixing state
and optical properties of soot with implications for radiative forcing
estimates, P. Natl. Acad. Sci. USA, 106, 11872–11877, https://doi.org/10.1073/pnas.0900040106, 2009.
Myhre, G., Shindell, D., Bréon, F.-M., Collins, W., Fuglestvedt, J.,
Huang, J., Koch, D., Lamarque, J.-F., Lee, D., Mendoza, B., Nakajima, T.,
Robock, A., Stephens, G., Takemura, T., and Zhang, H.: Anthropogenic and
natural radiative forcing, Cambridge, UK, 659–740, 2013.
Myhre, G. and Samset, B. H.: Standard climate models radiation codes underestimate black carbon radiative forcing, Atmos. Chem. Phys., 15, 2883–2888, https://doi.org/10.5194/acp-15-2883-2015, 2015.
Novakov, T. and Corrigan, C. E.: Cloud condensation nucleus activity of the
organic component of biomass smoke particles, Geophys. Res. Lett.,
23, 2141–2144, https://doi.org/10.1029/96GL01971, 1996.
Oanh, N. T. K., Bich, T. L., Tipayarom, D., Manadhar, B. R., Prapat, P.,
Simpson, C. D., and Liu, L. J. S.: Characterization of particulate matter emission from open burning of rice straw, Atmos. Environ., 45, 493–502, https://doi.org/10.1016/j.atmosenv.2010.09.023, 2011.
Oros, D. R. and Simoneit, B. R. T.: Identification and emission factors of
molecular tracers in organic aerosols from biomass burning Part 1. Temperate
climate conifers, Appl. Geochem., 16, 1513–1544,
https://doi.org/10.1016/S0883-2927(01)00021-X, 2001.
Panicker, A., Aditi, R., Beig, G., Ali, K., and Solmon, F.: Radiative Forcing of Carbonaceous Aerosols over Two Urban Environments in Northern India, Aerosol Air Qual. Res., 18, 884–894, https://doi.org/10.4209/aaqr.2017.01.0056, 2017.
Park, S. S. and Cho, S. Y.: Tracking sources and behaviors of water-soluble
organic carbon in fine particulate matter measured at an urban site in
Korea, Atmos. Environ., 45, 60–72,
https://doi.org/10.1016/j.atmosenv.2010.09.045, 2011.
Peng, J., Hu, M., Guo, S., Du, Z., Zheng, J., Shang, D., Levy Zamora, M.,
Zeng, L., Shao, M., Wu, Y.-S., Zheng, J., Wang, Y., Glen, C. R., Collins, D.
R., Molina, M. J., and Zhang, R.: Markedly enhanced absorption and direct
radiative forcing of black carbon under polluted urban environments,
P. Natl. Acad. Sci. USA, 113, 4266, https://doi.org/10.1073/pnas.1602310113, 2016.
Pruppacher, H. R. and Klett, J. D.: Microphysics of Clouds and
Precipitation, Second Revised and Enlarged Edition with an Introduction to
Cloud Chemistry and Cloud Electricity ed., Kluwer
Academic Publishers, Dordrecht, 1997.
Puxbaum, H., Caseiro, A., Sánchez-Ochoa, A., Kasper-Giebl, A., Claeys,
M., Gelencsér, A., Legrand, M., Preunkert, S., and Pio, C.: Levoglucosan
levels at background sites in Europe for assessing the impact of biomass
combustion on the European aerosol background, J. Geophys. Res.-Atmos., 112, D23S05, https://doi.org/10.1029/2006JD008114, 2007.
Qin, Y. M., Tan, H. B., Li, Y. J., Li, Z. J., Schurman, M. I., Liu, L., Wu, C., and Chan, C. K.: Chemical characteristics of brown carbon in atmospheric particles at a suburban site near Guangzhou, China, Atmos. Chem. Phys., 18, 16409–16418, https://doi.org/10.5194/acp-18-16409-2018, 2018.
Ramanathan, V. and Carmichael, G.: Global and regional climate changes due
to black carbon, Nat. Geosci., 1, 221–227, https://doi.org/10.1038/ngeo156, 2008.
Reisen, F., Meyer, C. P., McCaw, L., Powell, J. C., Tolhurst, K., Keywood,
M. D., and Gras, J. L.: Impact of smoke from biomass burning on air quality
in rural communities in southern Australia, Atmos. Environ., 45,
3944–3953, https://doi.org/10.1016/j.atmosenv.2011.04.060,
2011.
Rogers, C. F., Hudson, J. G., Zielinska, B., Tanner, R. L., Hallett, J., and
Watson, J. G.: Cloud condensation nuclei from biomass burnin, Massachusetts
Inst of Tech Press, United States, 1991.
Sang, X. F., Chan, C. Y., Engling, G., Chan, L. Y., Wang, X. M., Zhang, Y.
N., Si, S., Zhang, Z. S., Zhang, T., and Ming, H.: Levoglucosan enhancement
in ambient aerosol during springtime transport events of biomass burning
smoke to Southeast China, Tellus B, 63, 129–139, 2011.
Sareen, N., Moussa, S. G., and McNeill, V. F.: Photochemical Aging of
Light-Absorbing Secondary Organic Aerosol Material, J. Phys.
Chem. A, 117, 2987–2996, https://doi.org/10.1021/jp309413j, 2013.
Seibert, P. and Frank, A.: Source-receptor matrix calculation with a Lagrangian particle dispersion model in backward mode, Atmos. Chem. Phys., 4, 51–63, https://doi.org/10.5194/acp-4-51-2004, 2004.
Shamjad, P. M., Tripathi, S. N., Pathak, R., Hallquist, M., Arola, A., and
Bergin, M. H.: Contribution of Brown Carbon to Direct Radiative Forcing over
the Indo-Gangetic Plain, Environ. Sci. Technol., 49,
10474–10481, https://doi.org/10.1021/acs.est.5b03368, 2015.
Shamjad, P. M., Tripathi, S. N., Thamban, N. M., and Vreeland, H.:
Refractive Index and Absorption Attribution of Highly Absorbing Brown Carbon
Aerosols from an Urban Indian City-Kanpur, Sci. Rep.-UK, 6, 37735, https://doi.org/10.1038/srep37735,
2016.
Sheesley, R. J., Schauer, J. J., Chowdhury, Z., Cass, G. R., and Simoneit,
B. R. T.: Characterization of organic aerosols emitted from the combustion
of biomass indigenous to South Asia, J. Geophys. Res.-Atmos., 108, 4285, https://doi.org/10.1029/2002jd002981, 2003.
Shindell, D. and Faluvegi, G.: Climate response to regional radiative
forcing during the twentieth century, Nat. Geosci., 2, 294–300, https://doi.org/10.1038/ngeo473,
2009.
Simoneit, B. R. T.: Biomass burning – a review of organic tracers for
smoke from incomplete combustion, Appl. Geochem., 17, 129–162,
https://doi.org/10.1016/S0883-2927(01)00061-0, 2002.
Simoneit, B. R. T., Schauer, J. J., Nolte, C. G., Oros, D. R., Elias, V. O.,
Fraser, M. P., Rogge, W. F., and Cass, G. R.: Levoglucosan, a tracer for
cellulose in biomass burning and atmospheric particles, Atmos. Environ., 33, 173-182,
https://doi.org/10.1016/S1352-2310(98)00145-9, 1999.
Simoneit, B. R. T., Elias, V. O., Kobayashi, M., Kawamura, K., Rushdi, A.
I., Medeiros, P. M., Rogge, W. F., and Didyk, B. M.: SugarsDominant
Water-Soluble Organic Compounds in Soils and Characterization as Tracers in
Atmospheric Particulate Matter, Environ. Sci. Technol., 38,
5939–5949, https://doi.org/10.1021/es0403099, 2004.
Srinivas, B., Rastogi, N., Sarin, M. M., Singh, A., and Singh, D.: Mass
absorption efficiency of light absorbing organic aerosols from source region
of paddy-residue burning emissions in the Indo-Gangetic Plain, Atmos. Environ., 125, 360–370,
https://doi.org/10.1016/j.atmosenv.2015.07.017, 2016.
Stohl, A., Hittenberger, M., and Wotawa, G.: Validation of the lagrangian
particle dispersion model FLEXPART against large-scale tracer experiment
data, Atmos. Environ., 32, 4245–4264,
https://doi.org/10.1016/S1352-2310(98)00184-8, 1998.
Stohl, A., Forster, C., Frank, A., Seibert, P., and Wotawa, G.: Technical note: The Lagrangian particle dispersion model FLEXPART version 6.2, Atmos. Chem. Phys., 5, 2461–2474, https://doi.org/10.5194/acp-5-2461-2005, 2005.
Streets, D. G., Bond, T. C., Carmichael, G. R., Fernandes, S. D., Fu, Q.,
He, D., Klimont, Z., Nelson, S. M., Tsai, N. Y., Wang, M. Q., Woo, J. H.,
and Yarber, K. F.: An inventory of gaseous and primary aerosol emissions in
Asia in the year 2000, J. Geophys. Res.-Atmos., 108,
GTE 30-31–GTE 30-23, 2003.
Sullivan, A. P., Holden, A. S., Patterson, L. A., McMeeking, G. R.,
Kreidenweis, S. M., Malm, W. C., Hao, W. M., Wold, C. E., and Collett, J.
L.: A method for smoke marker measurements and its potential application for
determining the contribution of biomass burning from wildfires and
prescribed fires to ambient PM2.5 organic carbon, J. Geophys.
Res., 113, D22302, https://doi.org/10.1029/2008jd010216, 2008.
Sun, Y. L., Wang, Z. F., Fu, P. Q., Yang, T., Jiang, Q., Dong, H. B., Li, J., and Jia, J. J.: Aerosol composition, sources and processes during wintertime in Beijing, China, Atmos. Chem. Phys., 13, 4577–4592, https://doi.org/10.5194/acp-13-4577-2013, 2013.
Tsai, Y. I., Sopajaree, K., Kuo, S.-C., and Yu, S.-P.: Potential PM2.5
impacts of festival-related burning and other inputs on air quality in an
urban area of southern Taiwan, Sci. Total Environ., 527–528,
65–79, https://doi.org/10.1016/j.scitotenv.2015.04.021, 2015.
Tzompa-Sosa, Z. A., Sullivan, A. P., Retama, A., and Kreidenweis, S. M.:
Contribution of Biomass Burning to Carbonaceous Aerosols in Mexico City
during May 2013, Aerosol Air Qual. Res., 16, 114–124, https://doi.org/10.4209/aaqr.2015.01.0030, 2016.
Urban, R. C., Lima-Souza, M., Caetano-Silva, L., Queiroz, M. E. C., Nogueira, R. F. P., Allen, A. G., Cardoso, A. A., Held, G., and Campos, M. L. A. M.: Use of levoglucosan, potassium, and water-soluble organic carbon to characterize the origins of biomass-burning aerosols, Atmos. Environ., 61, 562–569, https://doi.org/10.1016/j.atmosenv.2012.07.082, 2012.
von Schneidemesser, E., Schauer, J. J., Hagler, G. S. W., and Bergin, M. H.:
Concentrations and sources of carbonaceous aerosol in the atmosphere of
Summit, Greenland, Atmos. Environ., 43, 4155–4162,
https://doi.org/10.1016/j.atmosenv.2009.05.043, 2009.
Wang, G., Chen, C., Li, J., Zhou, B., Xie, M., Hu, S., Kawamura, K., and
Chen, Y.: Molecular composition and size distribution of sugars,
sugar-alcohols and carboxylic acids in airborne particles during a severe
urban haze event caused by wheat straw burning, Atmos. Environ., 45,
2473–2479, https://doi.org/10.1016/j.atmosenv.2011.02.045,
2011.
Wang, J., Nie, W., Cheng, Y., Shen, Y., Chi, X., Wang, J., Huang, X., Xie, Y., Sun, P., Xu, Z., Qi, X., Su, H., and Ding, A.: Light absorption of brown carbon in eastern China based on 3-year multi-wavelength aerosol optical property observations and an improved absorption Ångström exponent segregation method, Atmos. Chem. Phys., 18, 9061–9074, https://doi.org/10.5194/acp-18-9061-2018, 2018.
Wang, W., Wu, M. H., Li, L., Zhang, T., Liu, X. D., Feng, J. L., Li, H. J., Wang, Y. J., Sheng, G. Y., Claeys, M., and Fu, J. M.: Polar organic tracers in PM2.5 aerosols from forests in eastern China, Atmos. Chem. Phys., 8, 7507–7518, https://doi.org/10.5194/acp-8-7507-2008, 2008.
Wang, Y., Ma, P.-L., Peng, J., Zhang, R., Jiang, J. H., Easter, R. C., and
Yung, Y. L.: Constraining Aging Processes of Black Carbon in the Community
Atmosphere Model Using Environmental Chamber Measurements, J.
Adv. Model. Earth Sy., 10, 2514–2526, https://doi.org/10.1029/2018MS001387,
2018.
Washenfelder, R. A., Attwood, A. R., Brock, C. A., Guo, H., Xu, L., Weber,
R. J., Ng, N. L., Allen, H. M., Ayres, B. R., Baumann, K., Cohen, R. C.,
Draper, D. C., Duffey, K. C., Edgerton, E., Fry, J. L., Hu, W. W., Jimenez,
J. L., Palm, B. B., Romer, P., Stone, E. A., Wooldridge, P. J., and Brown,
S. S.: Biomass burning dominates brown carbon absorption in the rural
southeastern United States, Geophys. Res. Lett., 42, 653–664, https://doi.org/10.1002/2014GL062444, 2015.
Yan, C., Zheng, M., Sullivan, A. P., Bosch, C., Desyaterik, Y., Andersson,
A., Li, X., Guo, X., Zhou, T., Gustafsson, Ö., and Collett, J. L.:
Chemical characteristics and light-absorbing property of water-soluble
organic carbon in Beijing: Biomass burning contributions, Atmos. Environ., 121, 4–12, https://doi.org/10.1016/j.atmosenv.2015.05.005, 2015.
Yan, C., Zheng, M., Bosch, C., Andersson, A., Desyaterik, Y., Sullivan, A.
P., Collett, J. L., Zhao, B., Wang, S., He, K., and Gustafsson, Ö.:
Important fossil source contribution to brown carbon in Beijing during
winter, Sci. Rep.-UK, 7, 43182, https://doi.org/10.1038/srep43182,
2017.
Yang, L., Nguyen, D. M., Jia, S., Reid, Jeffrey, S., Yu, and Liya, E.:
Impacts of biomass burning smoke on the distributions and concentrations of
C2–C5 dicarboxylic acids and dicarboxylates in a tropical urban
environment, Atmos. Environ., 78, 211–218, 2013.
Yang, M., Howell, S. G., Zhuang, J., and Huebert, B. J.: Attribution of aerosol light absorption to black carbon, brown carbon, and dust in China – interpretations of atmospheric measurements during EAST-AIRE, Atmos. Chem. Phys., 9, 2035–2050, https://doi.org/10.5194/acp-9-2035-2009, 2009.
Zdráhal, Z., Oliveira, J., Vermeylen, R., Claeys, M., and Maenhaut, W.:
Improved Method for Quantifying Levoglucosan and Related Monosaccharide
Anhydrides in Atmospheric Aerosols and Application to Samples from Urban and
Tropical Locations, Environ. Sci. Technol., 36, 747–753, https://doi.org/10.1021/es015619v, 2002.
Zeng, T. and Wang, Y.: Nationwide summer peaks of OC/EC ratios in the
contiguous United States, Atmos. Environ., 45, 578–586,
https://doi.org/10.1016/j.atmosenv.2010.10.038, 2011.
Zhang, L., Liu, Y., and Hao, L.: Contributions of open crop straw burning
emissions to PM2.5concentrations in China, Environ. Res. Lett.,
11, 014014, https://doi.org/10.1088/1748-9326/11/1/014014, 2016.
Zhang, T., Claeys, M., Cachier, H., Dong, S., Wang, W., Maenhaut, W., and
Liu, X.: Identification and estimation of the biomass burning contribution
to Beijing aerosol using levoglucosan as a molecular marker, Atmos. Environ., 42, 7013–7021,
https://doi.org/10.1016/j.atmosenv.2008.04.050, 2008.
Zhang, T., Wooster, M. J., Green, D. C., and Main, B.: New field-based
agricultural biomass burning trace gas, PM2.5, and black carbon emission
ratios and factors measured in situ at crop residue fires in Eastern China,
Atmos. Environ., 121, 22–34,
https://doi.org/10.1016/j.atmosenv.2015.05.010, 2015.
Zhang, X., Hecobian, A., Zheng, M., Frank, N. H., and Weber, R. J.: Biomass burning impact on PM2.5 over the southeastern US during 2007: integrating chemically speciated FRM filter measurements, MODIS fire counts and PMF analysis, Atmos. Chem. Phys., 10, 6839–6853, https://doi.org/10.5194/acp-10-6839-2010, 2010.
Zhang, X., Lin, Y.-H., Surratt, J. D., and Weber, R. J.: Sources,
Composition and Absorption Ångström Exponent of Light-absorbing
Organic Components in Aerosol Extracts from the Los Angeles Basin,
Environ. Sci. Technol., 47, 3685–3693, https://doi.org/10.1021/es305047b,
2013.
Zhang, Y., Schauer, J. J., Zhang, Y., Zeng, L., Wei, Y., Liu, Y., and Shao,
M.: Characteristics of Particulate Carbon Emissions from Real-World Chinese
Coal Combustion, Environ. Sci. Technol., 42, 5068–5073, https://doi.org/10.1021/es7022576, 2008.
Zhang, Y., Forrister, H., Liu, J., Dibb, J., Anderson, B., Schwarz, J. P.,
Perring, A. E., Jimenez, J. L., Campuzano-Jost, P., Wang, Y., Nenes, A., and
Weber, R. J.: Top-of-atmosphere radiative forcing affected by brown carbon
in the upper troposphere, Nat. Geosci., 10, 486–489, https://doi.org/10.1038/ngeo2960,
2017.
Zhang, Y.-N., Zhang, Z.-S., Chan, C.-Y., Engling, G., Sang, X.-F., Shi, S.,
and Wang, X.-M.: Levoglucosan and carbonaceous species in the background
aerosol of coastal southeast China: case study on transport of biomass
burning smoke from the Philippines, Environ. Sci. Pollut.
R., 19, 244–255, https://doi.org/10.1007/s11356-011-0548-7, 2012.
Zhang, Y.-x., Shao, M., Zhang, Y.-h., Zeng, L.-m., He, L.-y., Zhu, B., Wei,
Y.-j., and Zhu, X.-l.: Source profiles of particulate organic matters
emitted from cereal straw burnings, J. Environ. Sci., 19,
167–175, https://doi.org/10.1016/S1001-0742(07)60027-8, 2007.
Zhang, Z., Engling, G., Lin, C.-Y., Chou, C. C. K., Lung, S.-C. C., Chang,
S.-Y., Fan, S., Chan, C.-Y., and Zhang, Y.-H.: Chemical speciation,
transport and contribution of biomass burning smoke to ambient aerosol in
Guangzhou, a mega city of China, Atmos. Environ., 44, 3187–3195,
https://doi.org/10.1016/j.atmosenv.2010.05.024, 2010.
Zhou, Y., Xing, X., Lang, J., Chen, D., Cheng, S., Wei, L., Wei, X., and Liu, C.: A comprehensive biomass burning emission inventory with high spatial and temporal resolution in China, Atmos. Chem. Phys., 17, 2839–2864, https://doi.org/10.5194/acp-17-2839-2017, 2017.
Zhu, J., Xia, X., Che, H., Wang, J., Zhang, J., and Duan, Y.: Study of
aerosol optical properties at Kunming in southwest China and long-range
transport of biomass burning aerosols from North Burma, Atmos.
Res., 169, 237–247, https://doi.org/10.1016/j.atmosres.2015.10.012, 2016.
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Short summary
Although a total ban on straw burning has been enforced in eastern China, the regionally transported biomass burning emissions remarkably impacted the chemical and optical properties of carbonaceous aerosols in Nanjing, which were quantified by a calculation based on measured data and a simulation based on a model. Results showed that regionally transported biomass burning emissions significantly contributed to the carbonaceous aerosols and impacted the solar radiation balance of the atmosphere.
Although a total ban on straw burning has been enforced in eastern China, the regionally...
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