Articles | Volume 22, issue 22
https://doi.org/10.5194/acp-22-14693-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-22-14693-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Measurement report
| 
18 Nov 2022
Measurement report |
| 18 Nov 2022
| 18 Nov 2022
Measurement report: Contrasting elevation-dependent light absorption by black and brown carbon: lessons from in situ measurements from the highly polluted Sichuan Basin to the pristine Tibetan Plateau
Suping Zhao
CORRESPONDING AUTHOR
Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
Pingliang Land Surface Process & Severe Weather Research Station, Pingliang, 744015, China
Gansu Land Surface Process & Severe Weather Observation and
Research Station, Pingliang, 744015, China
State Key Laboratory of Cryospheric Science, Northwest Institute of
Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000,
China
Shaofeng Qi
Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
Ye Yu
Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
Pingliang Land Surface Process & Severe Weather Research Station, Pingliang, 744015, China
Gansu Land Surface Process & Severe Weather Observation and
Research Station, Pingliang, 744015, China
Shichang Kang
State Key Laboratory of Cryospheric Science, Northwest Institute of
Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000,
China
Longxiang Dong
Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
Pingliang Land Surface Process & Severe Weather Research Station, Pingliang, 744015, China
Gansu Land Surface Process & Severe Weather Observation and
Research Station, Pingliang, 744015, China
Jinbei Chen
Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
Pingliang Land Surface Process & Severe Weather Research Station, Pingliang, 744015, China
Gansu Land Surface Process & Severe Weather Observation and
Research Station, Pingliang, 744015, China
Daiying Yin
CORRESPONDING AUTHOR
Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
Related authors
Shaofeng Qi, Suping Zhao, Ye Yu, Longxiang Dong, Tong Zhang, Guo Zhao, Jianglin Li, Xiang Zhang, and Yiting Lv
EGUsphere, https://doi.org/10.5194/egusphere-2025-3254, https://doi.org/10.5194/egusphere-2025-3254, 2025
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
Short summary
Short summary
This study provides the first field evidence of the impact of downward transport of residual layer pollutants on boundary layer pollution, which holds significant implications for pollution control in complex terrain regions.
Suping Zhao, Shaofeng Qi, Jianjun He, Ye Yu, Longxiang Dong, Tong Zhang, Guo Zhao, and Yiting Lv
EGUsphere, https://doi.org/10.5194/egusphere-2025-3130, https://doi.org/10.5194/egusphere-2025-3130, 2025
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
Short summary
Short summary
Upper-air secondary pollutants can downward invade to PBL by strong turbulence at the sloped terrain. The results are helpful for understanding formation mechanism of heavy air pollution at the complex terrain, and then taking the targeted countermeasures.
Haixia Zhu, Lufei Zhen, Suping Zhao, and Xiying Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2025-1561, https://doi.org/10.5194/egusphere-2025-1561, 2025
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
Short summary
Short summary
This study collected dust samples from six sites in the Qaidam Basin, over three years to investigate the impact of domestic heating on atmospheric dust in hyper-arid region. Our results indicate that rural dust is significantly influenced by heating, particularly from coal and biomass burning which accounts for over 70 % of total sources. The unique energy structure here has resulted in distinct environmental effects from the emitted carbonaceous aerosols and useful for similar dry areas.
Suping Zhao, Ye Yu, Jianglin Li, Daiying Yin, Shaofeng Qi, and Dahe Qin
Atmos. Chem. Phys., 21, 14959–14981, https://doi.org/10.5194/acp-21-14959-2021, https://doi.org/10.5194/acp-21-14959-2021, 2021
Short summary
Short summary
We found a large PM2.5 reduction in response to Clean Air Action (CAA), but impacts of CAA on particle number concentrations (PNCs) may be different from PM2.5 mass due to newly formed particle impacts. The k-means clustering technique and Theil–Sen regression were used to analyze PNCs variations and to quantify their trends. Increased daytime solar radiation, higher temperature and lower RH at noon induced by reduced PM2.5 mass promoted formation of new particles and increased particle numbers.
Shaofeng Qi, Suping Zhao, Ye Yu, Longxiang Dong, Tong Zhang, Guo Zhao, Jianglin Li, Xiang Zhang, and Yiting Lv
EGUsphere, https://doi.org/10.5194/egusphere-2025-3254, https://doi.org/10.5194/egusphere-2025-3254, 2025
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
Short summary
Short summary
This study provides the first field evidence of the impact of downward transport of residual layer pollutants on boundary layer pollution, which holds significant implications for pollution control in complex terrain regions.
Suping Zhao, Shaofeng Qi, Jianjun He, Ye Yu, Longxiang Dong, Tong Zhang, Guo Zhao, and Yiting Lv
EGUsphere, https://doi.org/10.5194/egusphere-2025-3130, https://doi.org/10.5194/egusphere-2025-3130, 2025
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
Short summary
Short summary
Upper-air secondary pollutants can downward invade to PBL by strong turbulence at the sloped terrain. The results are helpful for understanding formation mechanism of heavy air pollution at the complex terrain, and then taking the targeted countermeasures.
Haixia Zhu, Lufei Zhen, Suping Zhao, and Xiying Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2025-1561, https://doi.org/10.5194/egusphere-2025-1561, 2025
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
Short summary
Short summary
This study collected dust samples from six sites in the Qaidam Basin, over three years to investigate the impact of domestic heating on atmospheric dust in hyper-arid region. Our results indicate that rural dust is significantly influenced by heating, particularly from coal and biomass burning which accounts for over 70 % of total sources. The unique energy structure here has resulted in distinct environmental effects from the emitted carbonaceous aerosols and useful for similar dry areas.
Suping Zhao, Ye Yu, Jianglin Li, Daiying Yin, Shaofeng Qi, and Dahe Qin
Atmos. Chem. Phys., 21, 14959–14981, https://doi.org/10.5194/acp-21-14959-2021, https://doi.org/10.5194/acp-21-14959-2021, 2021
Short summary
Short summary
We found a large PM2.5 reduction in response to Clean Air Action (CAA), but impacts of CAA on particle number concentrations (PNCs) may be different from PM2.5 mass due to newly formed particle impacts. The k-means clustering technique and Theil–Sen regression were used to analyze PNCs variations and to quantify their trends. Increased daytime solar radiation, higher temperature and lower RH at noon induced by reduced PM2.5 mass promoted formation of new particles and increased particle numbers.
J. Chen, Y. Hu, Y. Yu, and S. Lü
Atmos. Chem. Phys., 15, 9929–9944, https://doi.org/10.5194/acp-15-9929-2015, https://doi.org/10.5194/acp-15-9929-2015, 2015
Short summary
Short summary
The ergodic theorem of stationary random processes is introduced to analyse and verify the ergodicity of atmospheric turbulence measured using the eddy-covariance technique with two sets of field observational data. The results show that the ergodicity of atmospheric turbulence in atmospheric boundary layer is relative not only to the atmospheric stratification but also to the eddy scale of atmospheric turbulence.
Related subject area
Subject: Aerosols | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
Technical note: Towards a stronger observational support for haze pollution control by interpreting carbonaceous aerosol results derived from different measurement approaches
Particle flux–gradient relationships in the high Arctic: emission and deposition patterns across three surface types
Advances in characterization of black carbon particles and their associated coatings using the soot-particle aerosol mass spectrometer in Singapore, a complex city environment
Iron isotopes suggest significant aerosol dissolution over the Pacific Ocean
Enrichment of organic nitrogen in fog residuals observed in the Italian Po Valley
Asian dust transport of proteinaceous matter from the Gobi Desert to northern China
Machine-learning-assisted chemical characterization and optical properties of atmospheric brown carbon in Nanjing, China
Technical note: Reconstructing missing surface aerosol elemental carbon data in long-term series with ensemble learning
Enhanced emission of intermediate-volatility/semi-volatile organic matter in gas and particle phases from ship exhausts with low-sulfur fuels
Measurement report: Crustal materials play an increasing role in elevating particle pH – insights from 12-year records in a typical inland city of China
Significant contributions of biomass burning to PM2.5-bound aromatic compounds: insights from field observations and quantum chemical calculations
Measurement report: In-depth characterization of ship emissions during operations in a Mediterranean port
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
Long–term Trends in PM2.5 Chemical Composition and Its Impact on Aerosol Properties: Field Observations from 2007 to 2020 in Pearl River Delta, South China
Atmospheric Organosulfate Formation Regulated by Continental Outflows and Marine Emissions over East Asian Marginal Seas
Individual particle compositions and aerosol mixing states at different altitudes over the ocean in East Asia
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
The impacts of pollution sources and temperature on the light absorption of HULIS were revealed by UHPLC-HRMS/MS at the molecular structure level
Effects of Anthropogenic Pollutants on Biogenic Secondary Organic Aerosol Formation in the Atmosphere of Mt. Hua, China
Marine organic aerosol at Mace Head: effects from phytoplankton and source region variability
Elemental composition, iron mineralogy and solubility of anthropogenic and natural mineral dust aerosols in Namibia: a case study analysis from the AEROCLO-sA campaign
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
Hydroxymethanesulfonate (HMS) Formation under Urban and Marine Atmosphere: role of aerosol ionic strength
The sources and diurnal variations of submicron aerosols in a coastal-rural environment near Houston, US
Measurement report: Vertically resolved atmospheric properties observed over the Southern Great Plains with the ArcticShark uncrewed aerial system
Unraveling Arctic submicron organic aerosol sources: a year-long study by H-NMR and AMS in Ny-Ålesund, Svalbard
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 Volatile Organic Compounds Emission in Nitrate Formation in Lhasa, Tibetan Plateau: Insights from Oxygen Isotope Anomaly Measurements
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
A critical review of the use of iron isotopes in atmospheric aerosol research
Measurement report: Brown carbon aerosol in rural Germany – sources, chemistry, and diurnal variations
Climatology of aerosol pH and its controlling factors at the Melpitz continental background site in central Europe
Atmospheric chemistry in East Asia determines the iron solubility of aerosol particles supplied to the North Pacific Ocean
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
Yuan Cheng, Ying-jie Zhong, Zhi-qing Zhang, Xu-bing Cao, and Jiu-meng Liu
Atmos. Chem. Phys., 25, 8493–8505, https://doi.org/10.5194/acp-25-8493-2025, https://doi.org/10.5194/acp-25-8493-2025, 2025
Short summary
Short summary
As an emerging hotspot of atmospheric sciences, northeastern 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 in the exploration of PM2.5 sources in northeastern China, which are essential for further improving the regional air quality.
Theresa Mathes, Heather Guy, John Prytherch, Julia Kojoj, Ian Brooks, Sonja Murto, Paul Zieger, Birgit Wehner, Michael Tjernström, and Andreas Held
Atmos. Chem. Phys., 25, 8455–8474, https://doi.org/10.5194/acp-25-8455-2025, https://doi.org/10.5194/acp-25-8455-2025, 2025
Short summary
Short summary
The Arctic is warming faster than the global average and an investigation of aerosol–cloud–sea ice interactions is crucial for studying its climate system. During the ARTofMELT Expedition 2023, particle and sensible heat fluxes were measured over different surfaces. Wide lead surfaces acted as particle sources, with the strongest sensible heat fluxes, while closed ice surfaces acted as particle sinks. In this study, methods to measure these interactions are improved, enhancing our understanding of Arctic climate processes.
Mutian Ma, Laura-Hélèna Rivellini, Yichen Zong, Markus Kraft, Liya E. Yu, and Alex King Yin Lee
Atmos. Chem. Phys., 25, 8185–8211, https://doi.org/10.5194/acp-25-8185-2025, https://doi.org/10.5194/acp-25-8185-2025, 2025
Short summary
Short summary
This work advances our understanding of the 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.
Capucine Camin, François Lacan, Catherine Pradoux, Marie Labatut, Anne Johansen, and James W. Murray
Atmos. Chem. Phys., 25, 8213–8228, https://doi.org/10.5194/acp-25-8213-2025, https://doi.org/10.5194/acp-25-8213-2025, 2025
Short summary
Short summary
This paper presents the chemical and iron isotopic composition of aerosols (> 1 µm) over the equatorial and tropical Pacific Ocean in previously undocumented areas. Analysis of our data suggests that a significant proportion of aerosol iron (∼ 13 %) is not only dissolved but also removed during atmospheric transport. Such removal had not previously been evidenced to our knowledge. This highlights the unique and strong constraints brought by iron isotopes on atmospheric process studies.
Fredrik Mattsson, Almuth Neuberger, Liine Heikkinen, Yvette Gramlich, Marco Paglione, Matteo Rinaldi, Stefano Decesari, Paul Zieger, Ilona Riipinen, and Claudia Mohr
Atmos. Chem. Phys., 25, 7973–7989, https://doi.org/10.5194/acp-25-7973-2025, https://doi.org/10.5194/acp-25-7973-2025, 2025
Short summary
Short summary
This study investigated aerosol–cloud interactions, focusing on organic nitrogen (ON) formation in the aqueous phase. Measurements were conducted in wintertime in the Po Valley, Italy, 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.
Ren-Guo Zhu, Hua-Yun Xiao, Meiju Yin, Hao Xiao, Zhongkui Zhou, Yuanyuan Pan, Guo Wei, and Cheng Liu
Atmos. Chem. Phys., 25, 7699–7718, https://doi.org/10.5194/acp-25-7699-2025, https://doi.org/10.5194/acp-25-7699-2025, 2025
Short summary
Short summary
The concentrations and δ15N isotopic values of CAAs (combined amino acids) in surface soil and plants from the Gobi Desert, as well as in PM2.5 samples from four cities in Northern China, were measured. CAAs transported by Gobi dust were rich in alanine, glycine and glutamic acid. Glycine and leucine in Gobi Desert sources exhibited δ15N depletion by more than 6 ‰ compared to their values in urban PM2.5. Substantial protein-N deposition can be transported by the Gobi Desert to northern China over brief periods.
Yu Huang, Xingru Li, Dan Dan Huang, Ruoyuan Lei, Binhuang Zhou, Yunjiang Zhang, and Xinlei Ge
Atmos. Chem. Phys., 25, 7619–7645, https://doi.org/10.5194/acp-25-7619-2025, https://doi.org/10.5194/acp-25-7619-2025, 2025
Short summary
Short summary
This work comprises a comprehensive investigation into the chemical and optical properties of brown carbon (BrC) in PM2.5 samples collected in Nanjing, China. In particular, we used a machine learning approach to identify a list of key BrC species, which can be a good reference for future studies. Our findings extend understanding of BrC properties and are valuable to the assessment of BrC's impact on air quality and radiative forcing.
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
Atmos. Chem. Phys., 25, 7485–7498, https://doi.org/10.5194/acp-25-7485-2025, https://doi.org/10.5194/acp-25-7485-2025, 2025
Short summary
Short summary
We developed a machine-learning-based method to reconstruct missing elemental carbon (EC) data in four Chinese cities from 2013 to 2023. Using machine learning, we 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.
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
Atmos. Chem. Phys., 25, 7053–7069, https://doi.org/10.5194/acp-25-7053-2025, https://doi.org/10.5194/acp-25-7053-2025, 2025
Short summary
Short summary
Intermediate-volatility/semi-volatile organic compounds in 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 potential tracers for heavy fuel oil exhausts.
Hongyu Zhang, Shenbo Wang, Zhangsen Dong, Xiao Li, and Ruiqin Zhang
Atmos. Chem. Phys., 25, 6943–6955, https://doi.org/10.5194/acp-25-6943-2025, https://doi.org/10.5194/acp-25-6943-2025, 2025
Short summary
Short summary
Analyzing 12-year Zhengzhou data revealed post-2019 crustal material rebound caused by soil dust resuspension, elevating particle pH. Similar coarse particle increases are observed across cities of the North China Plain. Long-term particle acidity evolution in this region requires an integrated assessment of interactions among acidic precursors, ammonia, and crustal components.
Yanqin Ren, Zhenhai Wu, Fang Bi, Hong Li, Haijie Zhang, Junling Li, Rui Gao, Fangyun Long, Zhengyang Liu, Yuanyuan Ji, and Gehui Wang
Atmos. Chem. Phys., 25, 6975–6990, https://doi.org/10.5194/acp-25-6975-2025, https://doi.org/10.5194/acp-25-6975-2025, 2025
Short summary
Short summary
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.
Lise Le Berre, Brice Temime-Roussel, Grazia Maria Lanzafame, Barbara D'Anna, Nicolas Marchand, Stéphane Sauvage, Marvin Dufresne, Liselotte Tinel, Thierry Leonardis, Joel Ferreira de Brito, Alexandre Armengaud, Grégory Gille, Ludovic Lanzi, Romain Bourjot, and Henri Wortham
Atmos. Chem. Phys., 25, 6575–6605, https://doi.org/10.5194/acp-25-6575-2025, https://doi.org/10.5194/acp-25-6575-2025, 2025
Short summary
Short summary
A summer campaign in a Mediterranean port examined pollution caused by ships. Two stations in the port measured pollution levels and captured over 350 ship plumes to study their chemical composition. Results showed that pollution levels, such as ultra-fine particles, were higher in the port than in the city and offer strong support to improve emission inventories. These findings may also serve as reference to assess the benefits of a sulfur Emission Control Area in the Mediterranean in 2025.
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
Short summary
Short summary
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
Short summary
Short summary
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
Short summary
Short summary
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
Short summary
Short summary
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
Short summary
Short summary
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.
Yunfeng He, Xiang Ding, Quanfu He, Yuqing Zhang, Duohong Chen, Tao Zhang, Kong Yang, Junqi Wang, Qian Cheng, Hao Jiang, Zirui Wang, Ping Liu, Xinming Wang, and Michael Boy
EGUsphere, https://doi.org/10.5194/egusphere-2025-2204, https://doi.org/10.5194/egusphere-2025-2204, 2025
Short summary
Short summary
The long-term field measurements in the Pearl River Delta revealed a significant decline in PM2.5 main components. As air quality improved, secondary species became more dominant. In addition, the proportion of nitrate had doubled. The changes in chemical composition led to the reductions in aerosol acidity, liquid water content and light extinction coefficient. Our results help to improve understanding of the secondary species formation under decreasing anthropogenic emissions.
Shubin Li, Yujue Wang, Yiwen Zhang, Yizhe Yi, Yuchen Wang, Yuqi Guo, Chao Yu, Yue Jiang, Jinhui Shi, Chao Zhang, Jialei Zhu, Wei Hu, Jianzhen Yu, Xiaohong Yao, Huiwang Gao, and Min Hu
EGUsphere, https://doi.org/10.5194/egusphere-2025-2154, https://doi.org/10.5194/egusphere-2025-2154, 2025
Short summary
Short summary
Organosulfates (OSs) are an unrecognized and potentially important component in marine organic aerosols. In this study, we quantified and characterized the OSs over East Asian marginal seas. The chemical nature and spatiotemporal distribution of OSs were modified by the joint influence of marine emissions and transported terrestrial pollutants. The results highlight the vital roles of OSs in shaping organic aerosol formation and sulfur cycle during summer in marine boundary layer.
Kouji Adachi, Atsushi Yoshida, Tatsuhiro Mori, Nobuhiro Moteki, Sho Ohata, Kazuyuki Kita, Yoshimi Kawai, and Makoto Koike
EGUsphere, https://doi.org/10.5194/egusphere-2025-2230, https://doi.org/10.5194/egusphere-2025-2230, 2025
Short summary
Short summary
This study measured the compositions and mixing states of individual aerosol particles collected at different altitudes over the western North Pacific by simultaneous sampling from an aircraft and a research vessel. The results showed that they were strongly influenced by Siberian Forest biomass burning and mixed with sea spray, and identified various aerosol compositions at different altitudes, sizes, and aerosol sources, highlighting a wide range of individual particle compositions.
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
Short summary
Short summary
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
Short summary
Short summary
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
Short summary
Short summary
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.
Tao Qiu, Yanting Qiu, Yongyi Yuan, Rui Su, Xiangxinyue Meng, Jialiang Ma, Xiaofan Wang, Yu Gu, Zhijun Wu, Yang Ning, Xiuyi Hua, Dapeng Liang, and Deming Dong
EGUsphere, https://doi.org/10.5194/egusphere-2025-1808, https://doi.org/10.5194/egusphere-2025-1808, 2025
Short summary
Short summary
Our research reveals that some species from biomass burning and coal combustion dominate the light absorption of organic aerosols during winter. Cold weather helps these species accumulate in aerosols by slowing their degradation and altering atmospheric chemical processes. This means colder regions might experience stronger and more persistent climate impacts. Our findings highlight the importance of local temperatures and pollution sources when tackling climate challenges.
Can Wu, Yubao Chen, Yuwei Sun, Huijun Zhang, Si Zhang, Cong Cao, Jianjun Li, and Gehui Wang
EGUsphere, https://doi.org/10.5194/egusphere-2025-1668, https://doi.org/10.5194/egusphere-2025-1668, 2025
Short summary
Short summary
Biogenic secondary organic aerosol (BSOA), as an important atmospheric component, is prevalent within the boundary layer and can influence air quality and human health. Our observations demonstrate that anthropogenic NOx and the enhanced aerosol water driven by sulfate inhibit BSOA formation in lifting air masses, leading to a moderate reduction in the SOA burden in the upper boundary layer.
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
Short summary
Short summary
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.
Paola Formenti, Chiara Giorio, Karine Desboeufs, Alexander Zherebker, Marco Gaetani, Clarissa Baldo, Gautier Landrot, Simona Montebello, Servanne Chevaillier, Sylvain Triquet, Guillaume Siour, Claudia Di Biagio, Francesco Battaglia, Jean-François Doussin, Anais Feron, Andreas Namwoonde, and Stuart John Piketh
EGUsphere, https://doi.org/10.5194/egusphere-2025-446, https://doi.org/10.5194/egusphere-2025-446, 2025
Short summary
Short summary
The elemental composition and solubility of several metals, including iron, at a coastal site in Namibia in August–September 2017, indicate that natural and anthropogenic dust had different solubility depending on mineralogy but mostly to the processing by fluoride ions from marine emissions, pointing out to the complexity of atmospheric/oceanic interactions in this region of the world influenced by the Benguela current and significant aerosol load.
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
Short summary
Short summary
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
Short summary
Short summary
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
Short summary
Short summary
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.
Rongshuang Xu, Yu-Chi Lin, Siyu Bian, Feng Xie, and Yan-Lin Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2025-683, https://doi.org/10.5194/egusphere-2025-683, 2025
Short summary
Short summary
This work reported the hydroxymethanesulfonate (HMS) level in a continental city and, for the first time, in marine atmosphere. The enhancement by aerosol ionic strength (IS) on HMS formation was quantified which first rise with increasing IS, peaking at 4 mol kg–1 before declining. Given the IS range of marine (2–6) and urban aerosol (6–20 mol kg–1) and the clearly negative correlation between humidity and IS, the moderate IS level under humid condition may notably boost ambient HMS formation.
Jing Li, Jiaoshi Zhang, Xianda Gong, Steven Spielman, Chongai Kuang, Ashish Singh, Maria A. Zawadowicz, Lu Xu, and Jian Wang
EGUsphere, https://doi.org/10.5194/egusphere-2025-726, https://doi.org/10.5194/egusphere-2025-726, 2025
Short summary
Short summary
Using measurements at a rural coastal site, we quantified aerosols in representative air masses and identified major source of organics in Houston area. Our results show cooking aerosol is likely overestimated by earlier studies. Additionally, diurnal variation of highly oxidized organics is mostly driven by air mass changes instead of photochemistry. This study highlights the impacts of emissions, atmospheric chemistry, and meteorology on aerosol properties in the coastal-rural environment.
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
Short summary
Short summary
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.
Marco Paglione, Yufang Hao, Stefano Decesari, Mara Russo, Karam Mansour, Mauro Mazzola, Diego Fellin, Andrea Mazzanti, Emilio Tagliavini, Manousos Ioannis Manousakas, Evangelia Diapouli, Elena Barbaro, Matteo Feltracco, Kaspar Rudolf Daellenbach, and Matteo Rinaldi
EGUsphere, https://doi.org/10.5194/egusphere-2025-760, https://doi.org/10.5194/egusphere-2025-760, 2025
Short summary
Short summary
A year-long set of PM1 samples from Ny-Ålesund, Svalbard, was analyzed by H-NMR and HR-TOF-AMS for the chemical characterization of the organic fraction. Positive Matrix Factorization allowed to identify five organic aerosol sources with specific seasonality. Winter-spring aerosol is dominated by Eurasian pollution, while summer is characterized by biogenic aerosols from marine sources; occasional summertime high OA loadings are associated with wildfire aerosols.
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
Short summary
Short summary
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
Short summary
Short summary
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.
Xueqin Zheng, Junwen Liu, Nima Chuduo, Bian Ba, Pengfei Yu, Phu Drolgar, Fang Cao, and Yanlin Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2025-164, https://doi.org/10.5194/egusphere-2025-164, 2025
Short summary
Short summary
In this study, we present the first report on the annual variation of stable oxygen isotope anomalies (∆17O = δ17O - 0.52 × δ18O) in NO3- collected from the urban area of Lhasa , on the Tibetan Plateau, China. Using a Bayesian isotope mixture model, we found that the relative contribution of the NO3+VOC pathway to NO3- formation in spring in Lhasa was several times higher than in urban cities, highlighting the significant influence of VOC transported from outside the Tibetan Plateau.
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
Short summary
Short summary
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
Short summary
Short summary
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
Short summary
Short summary
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
Short summary
Short summary
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
Short summary
Short summary
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
Short summary
Short summary
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.
Yifan Zhang, Rui Li, Zachary B. Bunnell, Yizhu Chen, Guanhong Zhu, Jinlong Ma, Guohua Zhang, Tim M. Conway, and Mingjin Tang
EGUsphere, https://doi.org/10.5194/egusphere-2025-474, https://doi.org/10.5194/egusphere-2025-474, 2025
Short summary
Short summary
The sources of aerosol Fe, especially soluble aerosol Fe, remain to be constrained. The stable isotope ratio of Fe (δ56Fe) has emerged as a potential tracer for discriminating and quantifying sources of aerosol Fe. In this review, we examine the state of the field for using δ56Fe as an aerosol source tracer, and constraints on endmember signatures.
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
Short summary
Short summary
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.
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
Short summary
Short summary
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.
Kohei Sakata, Shotaro Takano, Atsushi Matsuki, Yasuo Takeichi, Hiroshi Tanimoto, Aya Sakaguchi, Minako Kurisu, and Yoshio Takahashi
EGUsphere, https://doi.org/10.5194/egusphere-2025-161, https://doi.org/10.5194/egusphere-2025-161, 2025
Short summary
Short summary
Deposition of aerosol iron (Fe) into the ocean stimulates primary production and influences the global carbon cycle, although the factors governing the aerosol Fe solubility remain uncertain. Our observations in Japan revealed that both mineral dust and anthropogenic aerosols are significant sources of dissolved Fe, and that atmospheric chemical weathering enhances their solubility. This finding is expected to play a crucial role in estimating the supply of dissolved iron to the ocean.
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
Short summary
Short summary
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
Short summary
Short summary
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
Short summary
Short summary
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.
Cited articles
Bond, T. C.: Spectral dependence of visible light absorption by carbonaceous
particles emitted from coal combustion, Geophys. Res. Lett.,
28, 4075–4078, 2001.
Bond, T. C., Streets, D. G., Yarber, K. F., Nelson, S. M., Woo, J. H., and
Klimont, Z.: A technology-based global inventory of black and organic carbon
emissions from combustion, J. Geophys. Res.-Atmos.,
109, D14203, https://doi.org/10.1029/2003J, 2004.
Chen, L.-W. A., Chow, J. C., Wang, X. L., Robles, J. A., Sumlin, B. J., Lowenthal, D. H., Zimmermann, R., and Watson, J. G.: Multi-wavelength optical measurement to enhance thermal/optical analysis for carbonaceous aerosol, Atmos. Meas. Tech., 8, 451–461, https://doi.org/10.5194/amt-8-451-2015, 2015.
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, 2018.
Chow, J. C., Watson, J. G., Chen, L.-W. A., Chang, M. C. O., Robinson, N.
F., Trimble, D., and Kohl, S.: The IMPROVE A Temperature
Protocol for Thermal/Optical Carbon Analysis: Maintaining Consistency with a
Long-Term Database, J. Air Waste Manage. Assoc.,
57, 1014–1023, 2007.
Chung, C. E., Ramanathan, V., and Decremer, D.: Observationally constrained
estimates of carbonaceous aerosol radiative forcing, P.
Natl. Acad. Sci. USA, 109,
11624–11629, 2012.
Cong, Z. Y. , Kang, S. C., Smirnov, A., and Holben, B.: Aerosol optical
properties at Nam Co, a remote site in central Tibetan Plateau, Atmos.
Res., 92, 42–48, 2009.
Cong, Z., Kang, S., Kawamura, K., Liu, B., Wan, X., Wang, Z., Gao, S., and Fu, P.: Carbonaceous aerosols on the south edge of the Tibetan Plateau: concentrations, seasonality and sources, Atmos. Chem. Phys., 15, 1573–1584, https://doi.org/10.5194/acp-15-1573-2015, 2015.
Cui, X. Q., Ren, J. W., Wang, Z. B., Yu, G. M., and Yue, G. Y.: Soluble ions
in atmospheric PM2.5 over glacier terminus determined by ion
chromatography and source analysis, J. Glaciol. Geocryol.,
41, 574–578, 2019 (in Chinese).
Duan, A. M. and Wu, G. X.: Change of cloud amount and the climate warming
on the Tibetan Plateau, Geophys. Res. Lett., 33, L22704, https://doi.org/10.1029/2006GL027946, 2006.
Feng, X. Y., Wei, S. M., and Wang, S. G.: Temperature inversions in the
atmospheric boundary layer and lower troposphere over the Sichuan Basin,
China: Climatology and impacts on air pollution, Sci. Total
Environ., 726, 138579, https://doi.org/10.1016/j.scitotenv.2020.138579, 2020.
Gao, Y. H., Chen, F., Lettenmaier, D. P., Xu, J. W., Xiao, L. H., and Li,
X.: Does elevation-dependent warming hold true above 5000 m elevation?
Lessons from the Tibetan Plateau, Clim. Atmos. Sci., 1,
19, https://doi.org/10.1038/s41612-018-0030-z, 2018.
Garrett, T. J. and Zhao, C. F.: Increased Arctic cloud longwave emissivity
associated with pollution from mid-latitudes, Nature, 440, 787–789, 2006.
Guo, D. L., Sun, J. Q., Yang, K., Pepin, N., and Xu, Y. M.: Revisiting
recent elevation-dependent warming on the Tibetan Plateau using
satellite-based data sets, J. Geophys. Res.-Atmos.,
124, 8511–8521, 2019.
Guo, D. L., Pepin, N., Yang, K., Sun, J. Q., and Li, D.: Local changes in
snow depth dominate the evolving pattern of elevation-dependent warming on
the Tibetan Plateau, Sci. Bull., 66, 1146–1150, 2021.
Han, T. T., Liu, X. G., Zhang, Y. H., Gu, J. W., Tian, H. Z., Zeng, L. M.,
Chang, S.-Y., Cheng, Y. F., Lu, K. D., and Hu, M.: Chemical characteristics
of PM10 during the summer in the mega-city Guangzhou, China,
Atmos. Res., 137, 25–34, 2014.
Huang, J. P., Minnis, P., Yi, Y. H., Tang, Q., Wang, X., Hu, Y. X., Liu, Z.
Y., Ayers, K., Trepte, C., and Winker, D.: Summer dust aerosols detected
from CALIPSO over the Tibetan Plateau, Geophys. Res. Lett., 34,
L18805, https://doi.org/10.1029/2007GL029938, 2007.
Huang, R. J., Yang, L., Cao, J. J., Chen, Y., Chen, Q., Li, Y. J., Duan, J.,
Zhu, C. S., Dai, W. T., Wang, K., Lin, C. S., Ni, H. Y., Corbin, J. C., Wu,
Y. F., Zhang, R. J., Tie, X. X., Hoffmann, T., O'Dowd, C., and Dusek, U.:
Brown carbon aerosol in urban Xi'an, Northwest China: the composition and
light absorption properties, Environ. Sci. Technol., 52,
6825–6833, 2018.
Jiang, Y. S., Gao, Y. H., He, C. L., Liu, B. L., Pan, Y. J., and Li, X.:
Spatiotemporal distribution and variation of wind erosion over the Tibetan
Plateau based on a coupled land-surface wind-erosion model, Aeolian
Res., 50, 100699, https://doi.org/10.1016/j.aeolia.2021.100699, 2021.
Kang, S. C., Zhang, Q. G., Qian, Y., Ji, Z. M., Li, C. L., Cong, Z. Y.,
Zhang, Y. L., Guo, J. M., Du, W. T., Huang, J., You, Q. L., Panday, A. K.,
Rupakheti, M., Chen, D. L., Gustafsson, O., Thiemens, M. H., and Qin, D. H.:
Linking atmospheric pollution to cryospheric change in the Third Pole
region: current progress and future prospects, National Sci. Rev.,
6, 796–809, 2019.
Kang, S. C., Zhang, Y. L., Qian, Y., and Wang, H. L.: A review of black
carbon in snow and ice and its impact on the cryosphere, Earth-Sci.
Rev., 210, 103346, https://doi.org/10.1016/j.earscirev.2020.103346, 2020.
Kawamura, K., Kasukabe, H., and Barrie, L. A.: Secondary formation of
water-soluble organic acids and alpha-dicarbonyls and their contributions to
total carbon and water-soluble organic carbon: Photochemical aging of
organic aerosols in the Arctic spring, J. Geophys. Res.-Atmos., 115, D21306, https://doi.org/10.1029/2010JD014299, 2010.
Lau, W. K. M., Kim, M. K., Kim, K. M., and Lee, W. S.: Enhanced surface
warming and accelerated snow melt in the Himalayas and Tibetan Plateau
induced by absorbing aerosols, Environ. Res. Lett., 5, 025204, https://doi.org/10.1088/1748-9326/5/2/025204,
2010.
Levinson, R., Akbari, H., and Berdahl, P.: Measuring solar re?ectance – part
I: defining a metric that accurately predicts solar heat gain, Solar Ener.,
84, 1717–1744, 2010.
Li, C. L., Chen, P. F., Kang, S C., Yan, F. P., Hu, Z., Qu, B., and
Sillanpää, M.: Concentrations and light absorption characteristics
of carbonaceous aerosol in PM2.5 and PM10 of Lhasa city, the
Tibetan Plateau, Atmos. Environ., 127, 340–346, 2016.
Liu, X. D. and Chen, B. D.: Climatic warming in the Tibetan Plateau during
recent decades, Int. J. Climatol., 20, 1729–1742,
2000.
Liu, H., Pan, X., Liu, D., Liu, X., Chen, X., Tian, Y., Sun, Y., Fu, P., and Wang, Z.: Mixing characteristics of refractory black carbon aerosols at an urban site in Beijing, Atmos. Chem. Phys., 20, 5771–5785, https://doi.org/10.5194/acp-20-5771-2020, 2020.
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. M., 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, 2014.
Lu, A. G., Kang, S. C., Li, Z. X., and Theakstone, W. H.: Altitude effects
of climatic variation on Tibetan Plateau and its vicinities, J.
Earth Sci., 21, 189–198, 2010.
Mountain Research Initiative EDW Working Group.: Elevation-dependent warming
in mountain regions of the world, Nat. Clim. Change, 5, 424–430,
2015.
Olson, M. R., Garcia, M. V., Robinson, M. A., Rooy, P. V., Dietenberger, M.
A., Bergin, M., and Schauer, J. J.: Investigation of black and brown carbon
multiple-wavelength dependent light absorption from biomass and fossil fuel
combustion source emissions, J. Geophys. Res.-Atmos.,
120, 6682–6697, 2015.
Palazzi, E., Filippi, L., and von Hardenberg, J.: Insights into
elevation-dependent warming in the Tibetan Plateau-Himalayas from CMIP5
model simulations, Clim. Dynam., 48, 3991–4008, 2017.
Peng, C., Yang, F. M., Tian, M., Shi, G. M., Li, L., Huang, R. J., Yao, X.
J., Luo, B., Zhai, C. Z., and Chen, Y.: Brown carbon aerosol in two
megacities in the Sichuan Basin of southwestern China: Light absorption
properties and implications, Sci. Total Environ., 719, 137483, https://doi.org/10.1016/j.scitotenv.2020.137483,
2020.
Pepin, N., Deng, H. J., Zhang, H. B., Zhang, F., Kang, S. C., and Yao, T.
D.: An examination of temperature trends at high elevations across the
Tibetan Plateau: The use of MODIS LST to understand patterns of
elevation-dependent warming, J. Geophys. Res.-Atmos.,
124, 5738–5756, 2019.
Quick, D. J. and Chadwick, O. A.: Accumulation of salt-rich dust from Owens
Lake playa in nearby alluvial soils, Aeolian Res., 3, 23–29, 2011.
Ramanathan, V. and Carmichael, G.: Global and regional climate changes due
to black carbon, Nat. Geosc., 1, 221–227, 2008.
Rangwala, I. and Miller, J. R.: Climate change in mountains: a review of
elevation-dependent warming and its possible causes, Clim. Change,
114, 527–547, 2012.
Stein, A. F., Draxler, R. R., Rolph, G. D., Stunder, B. J. B., Cohen, M. D., and Ngan, F.: NOAA’s HYSPLIT Atmospheric Transport and Dispersion Modeling System, Bull. Amer. Meteor. Soc., 96, 2059–2077, https://doi.org/10.1175/BAMS-D-14-00110.1, 2015.
Tao, J., Zhang, L. M., Zhang, R. J., Wu, Y. F., Zhang, Z. S., Zhang, X. L.,
Tang, Y. X., Cao, J. J., and Zhang, Y. H.: Uncertainty assessment of source
attribution of PM2.5 and its water-soluble organic carbon content using
different biomass burning tracers in positive matrix factorization
analysis-a case study in Beijing, China, Sci. Total Environ.,
543, 326–335, 2016.
Tian, P., Zhang, L., Ma, J., Tang, K., Xu, L., Wang, Y., Cao, X., Liang, J., Ji, Y., Jiang, J. H., Yung, Y. L., and Zhang, R.: Radiative absorption enhancement of dust mixed with anthropogenic pollution over East Asia, Atmos. Chem. Phys., 18, 7815–7825, https://doi.org/10.5194/acp-18-7815-2018, 2018.
Turpin, B. J. and Lim, H. J.: Species contributions to PM2.5 mass
concentrations: revisiting common assumptions for estimating organic mass,
Aerosol Sci. Technol., 35, 602–610, 2001.
Viidanoja, J., Sillanpaa, M., Laakia, J., Kerminen, V. M., Hillamo, R.,
Aarnio, P., and Koskentalo, T.: Organic and black carbon in PM2.5 and
PM10: 1 year of data from an urban site in Helsinki, Finland,
Atmos. Environ., 36, 3183–3193, 2002.
Wang, H., Tian, M., Chen, Y., Shi, G., Liu, Y., Yang, F., Zhang, L., Deng, L., Yu, J., Peng, C., and Cao, X.: Seasonal characteristics, formation mechanisms and source origins of PM2.5 in two megacities in Sichuan Basin, China, Atmos. Chem. Phys., 18, 865–881, https://doi.org/10.5194/acp-18-865-2018, 2018.
Wang, Y. J., Hu, M., Hu, W., Zheng, J., Niu, H. Y., Fang, X., Xu, N., Wu, Z.
J., Guo, S., Wu, Y. S., Chen, W. T., Lu, S. H., Shao, M., Xie, S. D., Luo,
B., and Zhang, Y. H.: Secondary formation of aerosols under typical
high-humidity conditions in wintertime Sichuan Basin, China: A contrast to
the North China Plain, J. Geophys. Res.-Atmos.,
126, e2021JD034560, https://doi.org/10.1029/2021JD034560, 2021.
Wilson, J. G., Kingham, S., Pearce, J., and Sturman, A. P.: A review of
intraurban variations in particulate air pollution: implications for
epidemiological research, Atmos. Environ., 39, 6444–6462,
2005.
Wu, G. M., Wan, X., Gao, S. P., Fu, P. Q., Yin, Y. G., Li, G., Zhang, G. S.,
Kang, S. C., Ram, K., and Cong, Z. Y.: Humic-like substances (HULIS) in
aerosols of central Tibetan Plateau (Nam Co, 4730 m asl): abundance, light
absorption properties, and sources, Environ. Sci. Technol.,
52, 7203–7211, 2018.
Xu, B. Q., Cao, J. J., Hansen, J., Yao, T. D., Joswia, D. R., Wang, N. L.,
Wu, G. J., Wang, M., Zhao, H. B., Yang, W., Liu, X. Q., and He, J. Q.: Black
soot and the survival of Tibetan glaciers, P. Natl.
Acad. Sci. USA, 106,
22114–22118, 2009.
Yin, D. Y., Zhao, S. P., Qu, J. J., Yu, Y., Kang, S. C., Ren, X. L., Zhang,
J., Zou, Y., Dong, L. X., Li, J. L., He, J. J., Li, P., and Qin, D. H.: The
vertical profiles of carbonaceous aerosols and key influencing factors
during wintertime over western Sichuan Basin, China, Atmos.
Environ., 223, 117269, https://doi.org/10.1016/j.atmosenv.2020.117269, 2020.
You, Q. L., Chen, D. L., Wu, F. Y., Pepin, N., Cai, Z. Y., Ahrens, B.,
Jiang, Z. H., Wu, Z. W., Kang, S. C., and AghaKouchak A.: Elevation
dependent warming over the Tibetan Plateau: Patterns, mechanisms and
perspectives, Earth-Sci. Rev. 210, 103349, https://doi.org/10.1016/j.earscirev.2020.103349, 2020.
Zeng, L. H., Zhang, A. X., Wang, Y. H., Wagner, N. L., Katich, J. M.,
Schwarz, J. P., Schill, G. P., Brock, C., Froyd, K. D., Murphy, D. M.,
Williamson, C. J., Kupc, A., Scheuer, E., Dibb, J., and Weber, R. J.: Global
measurements of brown carbon and estimated direct radiative effects,
Geophys. Res. Lett., 47, e2020GL088747, https://doi.org/10.1029/2020GL088747, 2020.
Zhang, L., Tang, C. G., Huang, J. P., Du, T., Guan, X., Tian, P. F., Shi, J.
S., Cao, X. J., Huang, Z. W., Guo, Q., Zhang, H. T., Wang, M., Zeng, H. Y.,
Wang, F. Y., and Dolkar, P.: Unexpected high absorption of atmospheric
aerosols over a western Tibetan Plateau site in summer, J.
Geophys. Res.-Atmos., 126, e2020JD033286, https://doi.org/10.1029/2020JD033286, 2021.
Zhang, J., Wang, Y. Y., Teng, X. M., Liu, L., Xu, Y. S., Ren, L. H., Shi, Z.
B., Zhang, Y., Jiang, J. K., Liu, D. T., Hu, M., Shao, L. Y., Chen, J. M.,
Martin, S. T., Zhang, X. Y., and Li, W. J.: Liquid-liquid phase separation
reduces radiative absorption by aged black carbon aerosols, Commun.
Earth Environ., 3, 128, https://doi.org/10.1038/s43247-022-00462-1, 2022.
Zhang, X. Y., Zhuang, G. S., Yuan, H., Rahn, K. A., Wang, Z. F., and An, Z.
S.: Aerosol particles from dried salt-lakes and saline soils carried on dust
storms over Beijing, Terrest. Atmos. Ocean. Sci., 20,
619–628, 2009.
Zhang, Y. Z., Forrister, H., Liu, J. M., Dibb, J., Anderson, B., Schwarz, J.
P., Perring, A. E., Jimenez, J. L., Campuzano-Jost, P., Wang, Y. H., Nenes,
A., and Weber, R. J.: Top-of-atmosphere radiative forcing affected by brown
carbon in the upper troposphere, Nat. Geosci., 10, 486–489, 2017.
Zhao, C. F., Yang, Y. K., Fan, H., Huang, J. P., Fu, Y. F., Zhang, X. Y.,
Kang, S. C., Cong, Z. Y., Letu, H., and Menenti, M.: Aerosol characteristics
and impacts on weather and climate over the Tibetan Plateau, Nat.
Sci. Rev., 7, 492–495, 2020.
Zhao, S., Feng, T., Tie, X., and Wang, Z.: The warming Tibetan Plateau improves winter air quality in the Sichuan Basin, China, Atmos. Chem. Phys., 20, 14873–14887, https://doi.org/10.5194/acp-20-14873-2020, 2020.
Zhao, S. P., Yu, Y., Yin, D. Y., Qin, D. H., He, J. J., and Dong, L. X.:
Spatial patterns and temporal variations of six criteria air pollutants
during 2015 to 2017 in the city clusters of Sichuan Basin, China, Sci. Total Environ., 624, 540–557, 2018.
Zhao, S. P., Yin, D. Y., Yu, Y., Kang, S. C., Ren, X. L., Zhang, J., Zou,
Y., and Qin, D. H.: PM1 chemical composition and light absorption
properties in urban and rural areas within Sichuan Basin, southwest China,
Environ. Pollut., 280, 116970, https://doi.org/10.1016/j.envpol.2021.116970, 2021.
Zhao, S. P., Qi, S. F., Yu, Y., Kang, S. C., Dong, L. X., Chen, J. B., and
Yin, D. Y.: Measurement report: The first in-situ PM1 chemical measurements at the
steep slope from highly polluted Sichuan Basin to pristine Tibetan Plateau:
light absorption of carbonaceous aerosols, and source and origin impacts, Zenodo
[data set], https://doi.org/10.5281/zenodo.6474199, 2022.
Zhao, Z. Z., Cao, J. J., Chow, J. C., Watson, J. G., Chen, A. L.-W., Wang, X.
L., Wang, Q. Y., Tian, J., Shen, Z. X., Zhu, C. S., Liu, S. X., Tao,
J., Ye, Z. L., Zhang, T., Zhou, J. M., and Tian, R. X.: Multi-wavelength
light absorption of black and brown carbon at a high-altitude site on the
Southeastern margin of the Tibetan Plateau, China, Atmos. Environ.,
212, 54–64, 2019.
Zhu, C. S., Cao, J. J., Huang, R. J., Shen, Z. X., Wang, Q. Y., and Zhang,
N. N.: Light absorption properties of brown carbon over the southeastern
Tibetan Plateau, Sci. Total Environ., 625, 246–251, 2018.
Short summary
Light absorption by aerosols is poorly understood at the eastern slope of the Tibetan Plateau (TP). We conducted the first in situ PM1 chemical measurements from the polluted Sichuan Basin to the eastern TP. A contrasting changes in mass absorption efficiency of black and brown carbon with altitude is found due to source differences. This study contributes to the understanding of the difference in light absorption by carbon with altitude, from the polluted basins to the pristine TP.
Light absorption by aerosols is poorly understood at the eastern slope of the Tibetan Plateau...
Altmetrics
Final-revised paper
Preprint