Articles | Volume 16, issue 2
https://doi.org/10.5194/acp-16-777-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-777-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
25 Jan 2016
Research article |
| 25 Jan 2016
Impact of vehicular emissions on the formation of fine particles in the Sao Paulo Metropolitan Area: a numerical study with the WRF-Chem model
Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of Sao Paulo, Sao Paulo, Brazil
M. F. Andrade
Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of Sao Paulo, Sao Paulo, Brazil
Department of Civil and Environmental Engineering, Faculty of Engineering and Physical Sciences (FEPS), University of Surrey, Guilford GU2 7XH, UK
Environmental Flow (EnFlo) Research Centre, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, UK
R. Y. Ynoue
Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of Sao Paulo, Sao Paulo, Brazil
A. G. Muñoz
International Research Institute for Climate and Society (IRI), Columbia University, Palisades, NY 10964-1000, USA
Centro de Modelado Científico (CMC), Universidad del Zulia, Maracaibo, Venezuela
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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 were dominant; 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.
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Subject: Aerosols | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Atmos. Chem. Phys., 24, 6787–6807, https://doi.org/10.5194/acp-24-6787-2024, https://doi.org/10.5194/acp-24-6787-2024, 2024
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In this study, we diagnose uncertainties in carbon monoxide and organic carbon emissions from four inventories for seven major wildfire-prone regions. Uncertainties in vegetation classification methods, fire detection products, and cloud obscuration effects lead to bias in these biomass burning (BB) emission inventories. By comparing simulations with measurements, we provide certain inventory recommendations. Our study has implications for reducing uncertainties in emissions in further studies.
Chandrakala Bharali, Mary Barth, Rajesh Kumar, Sachin D. Ghude, Vinayak Sinha, and Baerbel Sinha
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This study examines the role of atmospheric aerosols in winter fog over the Indo-Gangetic Plains of India using WRF-Chem. The increase in RH with aerosol–radiation feedback (ARF) is found to be important for fog formation as it promotes the growth of aerosols in the polluted environment. Aqueous-phase chemistry in the fog increases PM2.5 concentration, further affecting ARF. ARF and aqueous-phase chemistry affect the fog intensity and the timing of fog formation by ~1–2 h.
Wenxin Zhao, Yu Zhao, Yu Zheng, Dong Chen, Jinyuan Xin, Kaitao Li, Huizheng Che, Zhengqiang Li, Mingrui Ma, and Yun Hang
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We evaluate the long-term (2000–2020) variabilities of aerosol absorption optical depth, black carbon emissions, and associated health risks in China with an integrated framework that combines multiple observations and modeling techniques. We demonstrate the remarkable emission abatement resulting from the implementation of national pollution controls and show how human activities affected the emissions with a spatiotemporal heterogeneity, thus supporting differentiated policy-making by region.
Peng Xian, Jeffrey S. Reid, Melanie Ades, Angela Benedetti, Peter R. Colarco, Arlindo da Silva, Tom F. Eck, Johannes Flemming, Edward J. Hyer, Zak Kipling, Samuel Rémy, Tsuyoshi Thomas Sekiyama, Taichu Tanaka, Keiya Yumimoto, and Jianglong Zhang
Atmos. Chem. Phys., 24, 6385–6411, https://doi.org/10.5194/acp-24-6385-2024, https://doi.org/10.5194/acp-24-6385-2024, 2024
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The study compares and evaluates monthly AOD of four reanalyses (RA) and their consensus (i.e., ensemble mean). The basic verification characteristics of these RA versus both AERONET and MODIS retrievals are presented. The study discusses the strength of each RA and identifies regions where divergence and challenges are prominent. The RA consensus usually performs very well on a global scale in terms of how well it matches the observational data, making it a good choice for various applications.
Roger Teoh, Zebediah Engberg, Ulrich Schumann, Christiane Voigt, Marc Shapiro, Susanne Rohs, and Marc E. J. Stettler
Atmos. Chem. Phys., 24, 6071–6093, https://doi.org/10.5194/acp-24-6071-2024, https://doi.org/10.5194/acp-24-6071-2024, 2024
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The radiative forcing (RF) due to aviation contrails is comparable to that caused by CO2. We estimate that global contrail net RF in 2019 was 62.1 mW m−2. This is ~1/2 the previous best estimate for 2018. Contrail RF varies regionally due to differences in conditions required for persistent contrails. COVID-19 reduced contrail RF by 54% in 2020 relative to 2019. Globally, 2 % of all flights account for 80 % of the annual contrail energy forcing, suggesting a opportunity to mitigate contrail RF.
Haotian Zu, Biwu Chu, Yiqun Lu, Ling Liu, and Xiuhui Zhang
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The nucleation of iodic acid (HIO3) and iodous acid (HIO2) was proven to be critical in marine areas. However, HIO3–HIO2 nucleation cannot effectively derive the rapid nucleation in some polluted coasts. We find a significant enhancement of dimethylamine (DMA) on the HIO3–HIO2 nucleation in marine and polar regions with abundant DMA sources, which may establish reasonable connections between the HIO3–HIO2 nucleation and the rapid formation of new particles in polluted marine and polar regions.
Junghwa Lee, Patric Seifert, Tempei Hashino, Maximilian Maahn, Fabian Senf, and Oswald Knoth
Atmos. Chem. Phys., 24, 5737–5756, https://doi.org/10.5194/acp-24-5737-2024, https://doi.org/10.5194/acp-24-5737-2024, 2024
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Spectral bin model simulations of an idealized supercooled stratiform cloud were performed with the AMPS model for variable CCN and INP concentrations. We performed radar forward simulations with PAMTRA to transfer the simulations into radar observational space. The derived radar reflectivity factors were compared to observational studies of stratiform mixed-phase clouds. These studies report a similar response of the radar reflectivity factor to aerosol perturbations as we found in our study.
Basudev Swain, Marco Vountas, Aishwarya Singh, Nidhi L. Anchan, Adrien Deroubaix, Luca Lelli, Yanick Ziegler, Sachin S. Gunthe, Hartmut Bösch, and John P. Burrows
Atmos. Chem. Phys., 24, 5671–5693, https://doi.org/10.5194/acp-24-5671-2024, https://doi.org/10.5194/acp-24-5671-2024, 2024
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Arctic amplification (AA) accelerates the warming of the central Arctic cryosphere and affects aerosol dynamics. Limited observations hinder a comprehensive analysis. This study uses AEROSNOW aerosol optical density (AOD) data and GEOS-Chem simulations to assess AOD variability. Discrepancies highlight the need for improved observational integration into models to refine our understanding of aerosol effects on cloud microphysics, ice nucleation, and radiative forcing under evolving AA.
Vincenzo Obiso, María Gonçalves Ageitos, Carlos Pérez García-Pando, Jan P. Perlwitz, Gregory L. Schuster, Susanne E. Bauer, Claudia Di Biagio, Paola Formenti, Kostas Tsigaridis, and Ron L. Miller
Atmos. Chem. Phys., 24, 5337–5367, https://doi.org/10.5194/acp-24-5337-2024, https://doi.org/10.5194/acp-24-5337-2024, 2024
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We calculate the dust direct radiative effect (DRE) in an Earth system model accounting for regionally varying soil mineralogy through a new observationally constrained method. Linking dust absorption at solar wavelengths to the varying amount of specific minerals (i.e., iron oxides) improves the modeled range of dust single scattering albedo compared to observations and increases the global cooling by dust. Our results may contribute to improved estimates of the dust DRE and its climate impact.
Charlotte M. Beall, Po-Lun Ma, Matthew W. Christensen, Johannes Mülmenstädt, Adam Varble, Kentaroh Suzuki, and Takuro Michibata
Atmos. Chem. Phys., 24, 5287–5302, https://doi.org/10.5194/acp-24-5287-2024, https://doi.org/10.5194/acp-24-5287-2024, 2024
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Single-layer warm liquid clouds cover nearly one-third of the Earth's surface, and uncertainties regarding the impact of aerosols on their radiative properties pose a significant challenge to climate prediction. Here, we demonstrate how satellite observations can be used to constrain Earth system model estimates of the radiative forcing from the interactions of aerosols with clouds due to warm rain processes.
Zijun Li, Angela Buchholz, and Noora Hyttinen
EGUsphere, https://doi.org/10.5194/egusphere-2024-1182, https://doi.org/10.5194/egusphere-2024-1182, 2024
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Evaluating organosulfur (OS) hygroscopicity is important for assessing the aerosol-cloud climate interactions in the post-fossil fuel future, when SO2 emissions decrease and OS compounds become increasingly important. Here, a state-of-the-art quantum-chemistry-based method was used to predict the hygroscopic growth factors (HGFs) of a group of atmospherically relevant OS compounds and their mixtures with AS. A good agreement was observed between their model-estimated and experimental HGFs.
Xiaoli Wei, Qian Cui, Leiming Ma, Feng Zhang, Wenwen Li, and Peng Liu
Atmos. Chem. Phys., 24, 5025–5045, https://doi.org/10.5194/acp-24-5025-2024, https://doi.org/10.5194/acp-24-5025-2024, 2024
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A new aerosol-type classification algorithm has been proposed. It includes an optical database built by Mie scattering and a complex refractive index working as a baseline to identify different aerosol types. The new algorithm shows high accuracy and efficiency. Hence, a global map of aerosol types was generated to characterize aerosol types across the five continents. It will help improve the accuracy of aerosol inversion and determine the sources of aerosol pollution.
Zhiqiang Zhang, Ying Li, Haiyan Ran, Junling An, Yu Qu, Wei Zhou, Weiqi Xu, Weiwei Hu, Hongbin Xie, Zifa Wang, Yele Sun, and Manabu Shiraiwa
Atmos. Chem. Phys., 24, 4809–4826, https://doi.org/10.5194/acp-24-4809-2024, https://doi.org/10.5194/acp-24-4809-2024, 2024
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Secondary organic aerosols (SOAs) can exist in liquid, semi-solid, or amorphous solid states, which are rarely accounted for in current chemical transport models. We predict the phase state of SOA particles over China and find that in northwestern China SOA particles are mostly highly viscous or glassy solid. Our results indicate that the particle phase state should be considered in SOA formation in chemical transport models for more accurate prediction of SOA mass concentrations.
Alejandro Baró Pérez, Michael S. Diamond, Frida A.-M. Bender, Abhay Devasthale, Matthias Schwarz, Julien Savre, Juha Tonttila, Harri Kokkola, Hyunho Lee, David Painemal, and Annica M. L. Ekman
Atmos. Chem. Phys., 24, 4591–4610, https://doi.org/10.5194/acp-24-4591-2024, https://doi.org/10.5194/acp-24-4591-2024, 2024
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We use a numerical model to study interactions between humid light-absorbing aerosol plumes, clouds, and radiation over the southeast Atlantic. We find that the warming produced by the aerosols reduces cloud cover, especially in highly polluted situations. Aerosol impacts on drizzle play a minor role. However, aerosol effects on cloud reflectivity and moisture-induced changes in cloud cover dominate the climatic response and lead to an overall cooling by the biomass burning plumes.
Sampa Das, Peter R. Colarco, Huisheng Bian, and Santiago Gassó
Atmos. Chem. Phys., 24, 4421–4449, https://doi.org/10.5194/acp-24-4421-2024, https://doi.org/10.5194/acp-24-4421-2024, 2024
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The smoke aerosols emitted from vegetation burning can alter the regional energy budget via multiple pathways. We utilized detailed observations from the NASA ORACLES airborne campaign based in Namibia during September 2016 to improve the representation of smoke aerosol properties and lifetimes in our GEOS Earth system model. The improved model simulations are for the first time able to capture the observed changes in the smoke absorption during long-range plume transport.
Jia Liu, Cancan Zhu, Donghui Zhou, and Jinbao Han
EGUsphere, https://doi.org/10.5194/egusphere-2024-1000, https://doi.org/10.5194/egusphere-2024-1000, 2024
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The hydrophilic coatings of aged black carbon (BC) particles absorb moisture during the hygroscopic growth process, but it is difficult to characterize how much water is absorbed under different relative humidities (RHs). In this study, we propose a method to obtain the water content in the coatings based on the equivalent complex refractive index retrieved from optical properties, and this method is verified from theoretical inspect. This method performs well for thickly coated BC at high RHs.
Jingmin Li, Mattia Righi, Johannes Hendricks, Christof G. Beer, Ulrike Burkhardt, and Anja Schmidt
EGUsphere, https://doi.org/10.5194/egusphere-2024-1024, https://doi.org/10.5194/egusphere-2024-1024, 2024
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Aiming to understand underlying patterns and trends in aerosols, we characterize the spatial patterns and long-term evolution of lower tropospheric aerosols by clustering multiple aerosol properties from preindustrial times to the year 2050 under three SSP scenarios. The results provide a clear and condensed picture of the spatial extent and distribution of aerosols for different time periods and emission scenarios.
Falei Xu, Shuang Wang, Yan Li, and Juan Feng
EGUsphere, https://doi.org/10.5194/egusphere-2024-955, https://doi.org/10.5194/egusphere-2024-955, 2024
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This study examines how the North Atlantic Oscillation (NAO) and El Niño-Southern Oscillation (ENSO) in the previous winter affect spring dust activities in North China. The results show that NAO and ENSO, particularly in their negative phases, greatly influence dust activities. When both NAO and ENSO are negative, their combined effect on dust activities is even greater. This research underscores the importance of these climate patterns in predicting spring dust activities in North China.
Emilio Cuevas-Agulló, David Barriopedro, Rosa Delia García, Silvia Alonso-Pérez, Juan Jesús González-Alemán, Ernest Werner, David Suárez, Juan José Bustos, Gerardo García-Castrillo, Omaira García, África Barreto, and Sara Basart
Atmos. Chem. Phys., 24, 4083–4104, https://doi.org/10.5194/acp-24-4083-2024, https://doi.org/10.5194/acp-24-4083-2024, 2024
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During February–March (FM) 2020–2022, unusually intense dust storms from northern Africa hit the western Euro-Mediterranean (WEM). Using dust products from satellites and atmospheric reanalysis for 2003–2022, results show that cut-off lows and European blocking are key drivers of FM dust intrusions over the WEM. A higher frequency of cut-off lows associated with subtropical ridges is observed in the late 2020–2022 period.
Yahui Che, Bofu Yu, and Katherine Bracco
Atmos. Chem. Phys., 24, 4105–4128, https://doi.org/10.5194/acp-24-4105-2024, https://doi.org/10.5194/acp-24-4105-2024, 2024
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Dust events occur more frequently during the Austral spring and summer in dust regions, including central Australia, the southwest of Western Australia, and the northern and southern regions of eastern Australia using remote sensing and reanalysis datasets. High-concentration dust is distributed around central Australia and in the downwind northern and southern Australia. Typically, around 50 % of the dust lifted settles on Australian land, with the remaining half being deposited in the ocean.
Jonathan Elsey, Nicolas Bellouin, and Claire Ryder
Atmos. Chem. Phys., 24, 4065–4081, https://doi.org/10.5194/acp-24-4065-2024, https://doi.org/10.5194/acp-24-4065-2024, 2024
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Aerosols influence the Earth's energy balance. The uncertainty in this radiative forcing is large depending partly on uncertainty in measurements of aerosol optical properties. We have developed a freely available new framework of millions of radiative transfer simulations spanning aerosol uncertainty and assess the impact on radiative forcing uncertainty. We find that reducing these uncertainties would reduce radiative forcing uncertainty, but non-aerosol uncertainties must also be considered.
Jing Li, Nan Wu, Biwu Chu, An Ning, and Xiuhui Zhang
Atmos. Chem. Phys., 24, 3989–4000, https://doi.org/10.5194/acp-24-3989-2024, https://doi.org/10.5194/acp-24-3989-2024, 2024
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Iodic acid (HIO3) nucleates with iodous acid (HIO2) efficiently in marine areas; however, whether methanesulfonic acid (MSA) can synergistically participate in the HIO3–HIO2-based nucleation is unclear. We provide molecular-level evidence that MSA can efficiently promote the formation of HIO3–HIO2-based clusters using a theoretical approach. The proposed MSA-enhanced iodine nucleation mechanism may help us to deeply understand marine new particle formation events with bursts of iodine particles.
Yueming Cheng, Tie Dai, Junji Cao, Daisuke Goto, Jianbing Jin, Teruyuki Nakajima, and Guangyu Shi
EGUsphere, https://doi.org/10.5194/egusphere-2024-840, https://doi.org/10.5194/egusphere-2024-840, 2024
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In March 2021, East Asia experienced an outbreak of severe dust storms after an absence of one and a half decades. Here, we innovative used the time-lagged ground-based aerosol size information with the fixed-lag ensemble Kalman smoother to optimize the dust emission and reproduce the dust storm. This work is valuable for the quantification of health damage, aviation risks, and profound impacts on the Earth system, but also to reveal the climatic driving force and the process of desertification.
Hao Wang, Xiaohong Liu, Chenglai Wu, and Guangxing Lin
Atmos. Chem. Phys., 24, 3309–3328, https://doi.org/10.5194/acp-24-3309-2024, https://doi.org/10.5194/acp-24-3309-2024, 2024
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We quantified different global- and regional-scale drivers of biogenic volatile organic compound (BVOC) emission trends over the past 20 years. The results show that global greening trends significantly boost BVOC emissions and deforestation reduces BVOC emissions in South America and Southeast Asia. Elevated temperature in Europe and increased soil moisture in East and South Asia enhance BVOC emissions. The results deepen our understanding of long-term BVOC emission trends in hotspots.
Christof G. Beer, Johannes Hendricks, and Mattia Righi
Atmos. Chem. Phys., 24, 3217–3240, https://doi.org/10.5194/acp-24-3217-2024, https://doi.org/10.5194/acp-24-3217-2024, 2024
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Ice-nucleating particles (INPs) have important influences on cirrus clouds and the climate system; however, the understanding of their global impacts is still uncertain. We perform numerical simulations with a global aerosol–climate model to analyse INP-induced cirrus changes and the resulting climate impacts. We evaluate various sources of uncertainties, e.g. the ice-nucleating ability of INPs and the role of model dynamics, and provide a new estimate for the global INP–cirrus effect.
Jiawei Li, Zhiwei Han, Pingqing Fu, Xiaohong Yao, and Mingjie Liang
Atmos. Chem. Phys., 24, 3129–3161, https://doi.org/10.5194/acp-24-3129-2024, https://doi.org/10.5194/acp-24-3129-2024, 2024
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Organic aerosols of marine origin are important for aerosol climatic effects but are poorly understood. For the first time, an online coupled regional chemistry–climate model is applied to explore the characteristics of emission, distribution, and direct and indirect radiative effects of marine organic aerosols over the western Pacific, which reveals an important role of marine organic aerosols in perturbing cloud and radiation and promotes understanding of global aerosol climatic impact.
Yawen Liu, Yun Qian, Philip J. Rasch, Kai Zhang, Lai-yung Ruby Leung, Yuhang Wang, Minghuai Wang, Hailong Wang, Xin Huang, and Xiu-Qun Yang
Atmos. Chem. Phys., 24, 3115–3128, https://doi.org/10.5194/acp-24-3115-2024, https://doi.org/10.5194/acp-24-3115-2024, 2024
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Fire management has long been a challenge. Here we report that spring-peak fire activity over southern Mexico and Central America (SMCA) has a distinct quasi-biennial signal by measuring multiple fire metrics. This signal is initially driven by quasi-biennial variability in precipitation and is further amplified by positive feedback of fire–precipitation interaction at short timescales. This work highlights the importance of fire–climate interactions in shaping fires on an interannual scale.
Xu Feng, Loretta J. Mickley, Michelle L. Bell, Tianjia Liu, Jenny A. Fisher, and Maria Val Martin
Atmos. Chem. Phys., 24, 2985–3007, https://doi.org/10.5194/acp-24-2985-2024, https://doi.org/10.5194/acp-24-2985-2024, 2024
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During severe wildfire seasons, smoke can have a significant impact on air quality in Australia. Our study demonstrates that characterization of the smoke plume injection fractions greatly affects estimates of surface smoke PM2.5. Using the plume behavior predicted by the machine learning method leads to the best model agreement with observed surface PM2.5 in key cities across Australia, with smoke PM2.5 accounting for 5 %–52 % of total PM2.5 on average during fire seasons from 2009 to 2020.
Shiyi Lai, Ximeng Qi, Xin Huang, Sijia Lou, Xuguang Chi, Liangduo Chen, Chong Liu, Yuliang Liu, Chao Yan, Mengmeng Li, Tengyu Liu, Wei Nie, Veli-Matti Kerminen, Tuukka Petäjä, Markku Kulmala, and Aijun Ding
Atmos. Chem. Phys., 24, 2535–2553, https://doi.org/10.5194/acp-24-2535-2024, https://doi.org/10.5194/acp-24-2535-2024, 2024
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By combining in situ measurements and chemical transport modeling, this study investigates new particle formation (NPF) on the southeastern Tibetan Plateau. We found that the NPF was driven by the presence of biogenic gases and the transport of anthropogenic precursors. The NPF was vertically heterogeneous and shaped by the vertical mixing. This study highlights the importance of anthropogenic–biogenic interactions and meteorological dynamics in NPF in this climate-sensitive region.
Adriana Rocha-Lima, Peter R. Colarco, Anton S. Darmenov, Edward P. Nowottnick, Arlindo M. da Silva, and Luke D. Oman
Atmos. Chem. Phys., 24, 2443–2464, https://doi.org/10.5194/acp-24-2443-2024, https://doi.org/10.5194/acp-24-2443-2024, 2024
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Observations show an increasing aerosol optical depth trend in the Middle East between 2003–2012. We evaluate the NASA Goddard Earth Observing System (GEOS) model's ability to capture these trends and examine the meteorological and surface parameters driving dust emissions. Our results highlight the importance of data assimilation for long-term trends of atmospheric aerosols and support the hypothesis that vegetation cover loss may have contributed to increasing dust emissions in the period.
Marc Mallet, Aurore Voldoire, Fabien Solmon, Pierre Nabat, Thomas Drugé, and Romain Roehrig
EGUsphere, https://doi.org/10.5194/egusphere-2024-496, https://doi.org/10.5194/egusphere-2024-496, 2024
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This study investigates the interactions between smoke aerosols and climate in tropical Africa using a coupled ocean-atmosphere-aerosol climate model. The work shows that smoke plumes have a significant impact by increasing the low cloud fraction, decreasing the ocean and continental surface temperature and by reducing the precipitation of the coastal Western Africa. It also highlights the key role of the ocean temperature response and its feedbacks for the September to November season.
Danny M. Leung, Jasper F. Kok, Longlei Li, Natalie M. Mahowald, David M. Lawrence, Simone Tilmes, Erik Kluzek, Martina Klose, and Carlos Pérez García-Pando
Atmos. Chem. Phys., 24, 2287–2318, https://doi.org/10.5194/acp-24-2287-2024, https://doi.org/10.5194/acp-24-2287-2024, 2024
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This study uses a premier Earth system model to evaluate a new desert dust emission scheme proposed in our companion paper. We show that our scheme accounts for more dust emission physics, hence matching better against observations than other existing dust emission schemes do. Our scheme's dust emissions also couple tightly with meteorology, hence likely improving the modeled dust sensitivity to climate change. We believe this work is vital for improving dust representation in climate models.
Ruth A. R. Digby, Nathan P. Gillett, Adam H. Monahan, Knut von Salzen, Antonis Gkikas, Qianqian Song, and Zhibo Zhang
Atmos. Chem. Phys., 24, 2077–2097, https://doi.org/10.5194/acp-24-2077-2024, https://doi.org/10.5194/acp-24-2077-2024, 2024
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The COVID-19 lockdowns reduced aerosol emissions. We ask whether these reductions affected regional aerosol optical depth (AOD) and compare the observed changes to predictions from Earth system models. Only India has an observed AOD reduction outside of typical variability. Models overestimate the response in some regions, but when key biases have been addressed, the agreement is improved. Our results suggest that current models can realistically predict the effects of future emission changes.
Xinyue Shao, Minghuai Wang, Xinyi Dong, Yaman Liu, Wenxiang Shen, Stephen Arnold, Leighton Regayre, Meinrat Andreae, Mira Pöhlker, Duseong Jo, Man Yue, and Ken Carslaw
EGUsphere, https://doi.org/10.5194/egusphere-2024-401, https://doi.org/10.5194/egusphere-2024-401, 2024
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Highly oxygenated organic molecules (HOMs) play an important role in atmospheric new particle formation (NPF). By explicitly coupling the chemical mechanism of HOMs and a comprehensive nucleation scheme in a global climate model. The updated model shows better agreement with measurements of nucleation rate, growth rate, NPF event frequency. Our results reveal that HOMs-driven NPF leads to a considerable increase in particle and cloud condensation nuclei burden globally.
Huisheng Bian, Mian Chin, Peter R. Colarco, Eric C. Apel, Donald R. Blake, Karl Froyd, Rebecca S. Hornbrook, Jose Jimenez, Pedro Campuzano Jost, Michael Lawler, Mingxu Liu, Marianne Tronstad Lund, Hitoshi Matsui, Benjamin A. Nault, Joyce E. Penner, Andrew W. Rollins, Gregory Schill, Ragnhild B. Skeie, Hailong Wang, Lu Xu, Kai Zhang, and Jialei Zhu
Atmos. Chem. Phys., 24, 1717–1741, https://doi.org/10.5194/acp-24-1717-2024, https://doi.org/10.5194/acp-24-1717-2024, 2024
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This work studies sulfur in the remote troposphere at global and seasonal scales using aircraft measurements and multi-model simulations. The goal is to understand the sulfur cycle over remote oceans, spread of model simulations, and observation–model discrepancies. Such an understanding and comparison with real observations are crucial to narrow down the uncertainties in model sulfur simulations and improve understanding of the sulfur cycle in atmospheric air quality, climate, and ecosystems.
Gargi Sengupta, Minjie Zheng, and Nønne L. Prisle
Atmos. Chem. Phys., 24, 1467–1487, https://doi.org/10.5194/acp-24-1467-2024, https://doi.org/10.5194/acp-24-1467-2024, 2024
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The effect of organic acid aerosol on sulfur chemistry and cloud properties was investigated in an atmospheric model. Organic acid dissociation was considered using both bulk and surface-related properties. We found that organic acid dissociation leads to increased hydrogen ion concentrations and sulfate aerosol mass in aqueous aerosols, increasing cloud formation. This could be important in large-scale climate models as many organic aerosol components are both acidic and surface-active.
Leena Kangas, Jaakko Kukkonen, Mari Kauhaniemi, Kari Riikonen, Mikhail Sofiev, Anu Kousa, Jarkko V. Niemi, and Ari Karppinen
Atmos. Chem. Phys., 24, 1489–1507, https://doi.org/10.5194/acp-24-1489-2024, https://doi.org/10.5194/acp-24-1489-2024, 2024
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Residential wood combustion is a major source of fine particulate matter. This study has evaluated the contribution of residential wood combustion to fine particle concentrations and its year-to-year and seasonal variation in te Helsinki metropolitan area. The average concentrations attributed to wood combustion in winter were up to 10- or 15-fold compared to summer. Wood combustion caused 12 % to 14 % of annual fine particle concentrations. In winter, the contribution ranged from 16 % to 21 %.
Arto Heitto, Cheng Wu, Diego Aliaga, Luis Blacutt, Xuemeng Chen, Yvette Gramlich, Liine Heikkinen, Wei Huang, Radovan Krejci, Paolo Laj, Isabel Moreno, Karine Sellegri, Fernando Velarde, Kay Weinhold, Alfred Wiedensohler, Qiaozhi Zha, Federico Bianchi, Marcos Andrade, Kari E. J. Lehtinen, Claudia Mohr, and Taina Yli-Juuti
Atmos. Chem. Phys., 24, 1315–1328, https://doi.org/10.5194/acp-24-1315-2024, https://doi.org/10.5194/acp-24-1315-2024, 2024
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Particle growth at the Chacaltaya station in Bolivia was simulated based on measured vapor concentrations and ambient conditions. Major contributors to the simulated growth were low-volatility organic compounds (LVOCs). Also, sulfuric acid had major role when volcanic activity was occurring in the area. This study provides insight on nanoparticle growth at this high-altitude Southern Hemispheric site and hence contributes to building knowledge of early growth of atmospheric particles.
Steven Soon-Kai Kong, Saginela Ravindra Babu, Sheng-Hsiang Wang, Stephen M. Griffith, Jackson Hian-Wui Chang, Ming-Tung Chuang, Guey-Rong Sheu, and Neng-Huei Lin
Atmos. Chem. Phys., 24, 1041–1058, https://doi.org/10.5194/acp-24-1041-2024, https://doi.org/10.5194/acp-24-1041-2024, 2024
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In this study, we combined ground observations from 7-SEAS Dongsha Experiment, MERRA-2 reanalysis, and MODIS satellite images for evaluation and improvement of the CMAQ dust model for cases of East Asian Dust reaching the Taiwan region, including Dongsha in the western Pacific. We proposed a better CMAQ dust treatment over East Asia and for the first time revealed the impact of typhoons on dust transport.
Hengheng Zhang, Wei Huang, Xiaoli Shen, Ramakrishna Ramisetty, Junwei Song, Olga Kiseleva, Christopher Claus Holst, Basit Khan, Thomas Leisner, and Harald Saathoff
EGUsphere, https://doi.org/10.5194/egusphere-2024-90, https://doi.org/10.5194/egusphere-2024-90, 2024
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Our study unravels how stagnant winter conditions elevate aerosol levels in Stuttgart. Cloud cover at night plays a pivotal role, impacting morning air quality. Validating a key model, our findings aid accurate air quality predictions, crucial for effective pollution mitigation in urban areas.
Cited articles
Ackermann, I. J., Hass, H., Memmesheimer, M., Ebel, A., Binkowski, F. S.,
and Shankar, U.: Modal aerosol dynamics model for Europe: development and
first applications, Atmos. Environ., 32, 2981–2999, 1998.
Ahmadov, R., McKeen, S. A., Robinson, A. L., Bahreini, R., Middlebrook, A.
M., de Gouw, J. A., Meagher, J., Hsie, E. Y., Edgerton, E., Shaw, S., and
Trainer, M.: A volatility basis set model for summertime secondary organic
aerosols over the eastern United States in 2006, J. Geophys. Res., 117,
D06301, https://doi.org/10.1029/2011JD016831, 2012.
Albuquerque, T. T. A., Andrade, M. F., and Ynoue, R. Y.: Characterization of
atmospheric aerosols in the city of Sao Paulo, Brazil: comparisons between
polluted and unpolluted periods, Water Air Soil Poll., 195, 201–213, 2011.
Anderson, L.: Ethanol fuel use in Brazil: air quality impacts, Energy
Environ. Sci., 2, 1015–1037, 2009.
Andrade, M. F., Fornaro, A., Miranda, R. M., Kerr, A., Oyama, B., Andre, P.
A., and Saldiva, P.: Vehicle emissions and PM2.5 mass concentrations in
six Brazilian cities, Air Qual. Atmos. Health, 5, 79–88, 2012.
Andrade, M. F., Ynoue, R. Y., Freitas, E. D., Todesco, E., Vara-Vela, A.,
Ibarra, S., Martins, L. D., Martins, J. A., and Carvalho, V. S. B.: Air
quality forecasting system for Southeastern Brazil, Front. Environ. Sci., 3,
1–14, 2015.
Binkowski, F. S. and Shankar, U.: The regional particulate matter model, 1.
Mode description and preliminary results, J. Geophys. Res., 100,
26191–26209, 1995.
Birch, M. E. and Cary, R. A.: Elemental carbon-based method for occupational
monitoring of particulate diesel exhaust: methodology and exposure issues,
Aerosol Sci. Tech., 25, 221–241, 1996.
Brito, J., Rizzo, L. V., Herckes, P., Vasconcellos, P. C., Caumo, S. E. S.,
Fornaro, A., Ynoue, R. Y., Artaxo, P., and Andrade, M. F.: Physical–chemical
characterisation of the particulate matter inside two road tunnels in the
São Paulo Metropolitan Area, Atmos. Chem. Phys., 13, 12199–12213,
https://doi.org/10.5194/acp-13-12199-2013, 2013.
Brown, S. G., Lee, T., Roberts, P. T., and Collett Jr., J. L.: Variations in
the OM ∕ OC ratio of urban organic aerosol next to a major roadway, J.
Air Waste Manage., 63, 1422–1433, 2013.
Carvalho, V. S. B., Freitas, E. D., Martins, L. D., Martins, J. A., Mazzoli,
C. R., and Andrade, M. F.: Air quality status and trends over the
Metropolitan Area of Sao Paulo, Brazil as a result of emission control
policies, Environ. Sci. Policy, 47, 68–79, 2015.
Castanho, A. D. A. and Artaxo, P.: Sao Paulo aerosol source apportionment for
wintertime and summertime, Atmos. Environ., 35, 4889–4902, 2001.
CETESB – Companhia de Tecnologia de Saneamento Ambiental: Relatorio Anual de
Qualidade do Ar no Estado de Sao Paulo 2009, Sao Paulo, Brazil, 2010.
CETESB – Companhia de Tecnologia de Saneamento Ambiental: Emissões
veiculares no Estado de São Paulo 2011, Sao Paulo, Brazil, 2012.
CETESB – Companhia de Tecnologia de Saneamento Ambiental: Relatorio Anual de
Qualidade do Ar no Estado de Sao Paulo 2012, Sao Paulo, Brazil, 2013.
Chang, J. S., Binkowki, F. S., Seaman, N. L., McHenry, J. N., Samson, P. J.,
Stockwell, W. R., Walcek, C. J., Madronich, S., Middleton, P. B., Pleim, J.
E., and Lansford, H. H.: The regional acid deposition model and engineering
model, State-of-Science/Technology, Report 4, National Acid Precipitation
Assessment Program, Washington, DC, USA, 1989.
Costa, R. C. and Sodré, J. R.: Hydrous ethanol vs. gasoline-ethanol
blend: Engine performance and emissions, Fuel, 89, 287–293, 2010.
Draxler, R. R. and Hess, G. D.: An overview of the HYSPLIT 4 modelling system
of trajectories, dispersion, and deposition, Aust. Meteorol. Mag., 47,
295–308, 1998.
Emmons, L. K., Walters, S., Hess, P. G., Lamarque, J.-F., Pfister, G. G.,
Fillmore, D., Granier, C., Guenther, A., Kinnison, D., Laepple, T., Orlando,
J., Tie, X., Tyndall, G., Wiedinmyer, C., Baughcum, S. L., and Kloster, S.:
Description and evaluation of the Model for Ozone and Related chemical
Tracers, version 4 (MOZART-4), Geosci. Model Dev., 3, 43–67,
https://doi.org/10.5194/gmd-3-43-2010, 2010.
Fast, J. D., Gustafson, W. I., Easter, R. C., Zaveri, R. A., Barnard, J. C.,
Chapman, E. G., Grell, G. A., and Peckham, S. E.: Evolution of ozone,
particulates, and aerosol direct radiative forcing in the vecinity of Houston
using a fully coupled meteorology-chemistry-aerosol module, J. Geophys. Res.,
111, D21305, https://doi.org/10.1029/2005JD006721, 2006.
Forkel, R., Werhahn, J., Hansen, A. B., McKeen, S., Peckham, S., Grell, G.,
and Suppan, P.: Effect of aerosol-radiation feedback on regional air quality
– A case study with WRF/Chem, Atmos. Environ., 53, 202–211, 2012.
Ginoux, P., Chin, M., Tegen, I., Prospero, J. M., Holben, B., Dubovik, O.,
and Lin, S.-J.: Sources and distributions of dust aerosols simulated with the
GOCART model, J. Geophys. Res., 106, 20255–20273, 2001.
Gong, S. L.: A parameterization of sea-salt aerosol source function for sub-
and super-micron particles, Global Biogeochem. Cy., 17, 1097,
https://doi.org/10.1029/2003GB002079, 2003.
Gorin, C. A., Collett Jr., J. L., and Herckes, P.: Wood smoke contribution to
winter aerosol in Fresno, CA, J. Air Waste Manage., 56, 1584–1590, 2006.
GrEC – Grupo de Estudos Climáticos: Relatório climatológico
mensal, previsão climática para o Brasil: Set-Out-Nov/2012, Sao
Paulo, Brazil, available at:
www.grec.iag.usp.br/link_grec_old/relatorios_climatologicos/2012/agosto/
(last access: 18 March 2014), 2012a.
GrEC – Grupo de Estudos Climáticos: Relatório climatológico
mensal, monitoramento climático para o Brasil: Set/2012, Sao Paulo,
Brazil, available at:
www.grec.iag.usp.br/link_grec_old/relatorios_climatologicos/2012/setembro/
(last access: 18 March 2014), 2012b.
Grell, G. A., Peckham, S. E., Schmitz, R., McKeen, S. A., Wilczak, J., and
Eder, B.: Fully coupled “online” chemistry within the WRF model, Atmos.
Environ., 39, 6957–6975, 2005.
Guenther, A. B., Zimmerman, P. R., Harley, P. C., Monson, R. K., and Fall,
R.: Isoprene and monoterpene emission rate variability: model evaluations and
sensitivity analyses, J. Geophys. Res., 98D, 12609–12617, 1993.
Guenther, A. B., Zimmerman, P., and Wildermuth, M.: Natural volatile organic
compound emission rateestimates for US woodland landscapes, Atmos. Environ.,
28, 1197–1210, 1994.
Heal, M. R., Kumar, P., and Harrison, R. M.: Particles, air quality, policy
and health, Chem. Soc. Rev., 41, 6606–6630, 2012.
Jenkin, M. E. and Clemitshaw, K. C.: Ozone and other secondary photochemical
pollutants: chemical processes governing their formation in the planetary
boundary layer, Atmos. Environ., 34, 2499–2527, 2000.
Kroll, J. H. and Seinfeld, J. H.: Chemistry of secondary organic aerosol:
Formation and evolution of low-volatility organics in the atmosphere, Atmos.
Environ., 42, 3593–3624, 2008.
Kulmala, M., Laaksonen, A., and Pirjola, L.: Parameterization for sulphuric
acid/water nucleation rates, J. Geophys. Res., 103, 8301–8307, 1998.
Kumar, P., Robins, A., Vardoulakis, S., and Britter, R.: A review of the
characteristics of nanoparticles in the urban atmosphere and the prospects
for developing regulatory control, Atmos. Environ., 44, 5035–5052, 2010.
Kumar, P., Ketzel, M., Vardoulakis, S., Pirjola, L., and Britter, R.:
Dynamics and dispersion modelling of nanoparticles from road traffic in the
urban atmospheric environment – a review, J. Aerosol Sci., 42, 580–603,
2011.
Kumar, P., Morawska, L., Birmili, W., Paasonen, P., Hu, M., Kulmala, M.,
Harrison, R.M., Norford, L., and Britter, R.: Ultrafine particles in cities,
Environ. Int., 66, 1–10, 2014.
Li, G., Zhang, R., and Fan, J.: Impacts of black carbon aerosol on photolysis
and ozone, J. Geophys. Res., 110, D23206, https://doi.org/10.1029/2005JD005898, 2005.
Li, G., Bei, N., Tie, X., and Molina, L. T.: Aerosol effects on the
photochemistry in Mexico City during MCMA-2006/MILAGRO campaign, Atmos. Chem.
Phys., 11, 5169–5182, https://doi.org/10.5194/acp-11-5169-2011, 2011a.
Li, G., Zavala, M., Lei, W., Tsimpidi, A. P., Karydis, V. A., Pandis, S. N.,
Canagaratna, M. R., and Molina, L. T.: Simulations of organic aerosol
concentrations in Mexico City using the WRF-CHEM model during the
MCMA-2006/MILAGRO campaign, Atmos. Chem. Phys., 11, 3789–3809,
https://doi.org/10.5194/acp-11-3789-2011, 2011b.
Marple, V. A., Rubow, K. L., Ananth, G. P., and Fissan, H. J.: Micro-Orifice
Uniform Deposit Impactor, J. Aerosol Sci., 17, 489–494, 1986.
Martins, L. D., Vasconcellos, P. C., Carvalho, L. F., and Andrade, M. F.:
Estimated impact of biogenic hydrocarbon emissions on photochemical oxidant
formation in Sao Paulo during two periods of the winters of 1999–2000,
Revista Brasileira de Meteorologia, 21, 190–200, 2006.
Matsui, H., Koike, M., Kondo, Y., Takami, A., Fast, J. D., Kanaya, Y., and
Takigawa, M.: Volatility basis-set approach simulation of organic aerosol
formation in East Asia: implications for anthropogenic–biogenic interaction
and controllable amounts, Atmos. Chem. Phys., 14, 9513–9535,
https://doi.org/10.5194/acp-14-9513-2014, 2014.
McMurry, P., Shepherd, M., and Vickery, J.: Particulate Matter Science for
Policy Makers: A NARSTO Assessment, Cambridge University Press, Cambridge,
UK, 2004.
Middleton, P., Stockwell, W. R., and Carter, W. P. L.: Aggregation and
analysis of volatile organic compound emissions for regional modelling,
Atmos. Environ., 24A, 1107–1133, 1990.
Miranda, R. M. and Andrade, M. F.: Physicochemical characteristics of
atmospheric aerosols during winter in the Sao Paulo Metropolitan Area in
Brazil, Atmos. Environ., 39, 6188–6193, 2005.
Monahan, E. C., Spiel, D. E., and Davidson, K. L.: A model of marine aerosol
generation via whitecaps and wave disruption, in: Oceanic Whitecaps, edited
by: Monahan, E. C. and MacNiocaill, G. D., Reidel Publishing Company,
Norwell, USA, 167–174, 1986.
Monks, P. S.: Gas-phase radical chemistry in the troposphere, Chem. Soc.
Rev., 34, 376–395, 2005.
Muñoz, A. G., López, P., Velásquez, R., Monterrey, L., León,
G., Ruiz, F., Recalde, C., Cadena, J., Mejía, R., Paredes, M., Bazo, J.,
Reyes, C., Carrasco, G., Castellón, Y., Villarroel, C., Quintana, J., and
Urdaneta, A.: An Environmental Watch System for the Andean Countries: El
Observatorio Andino, B. Am. Meteorol. Soc., 91, 1645–1652, 2010.
Muñoz, A. G., Ruiz-Carrascal, D., Ramírez, P., León, G.,
Quintana, J., Bonilla, A., Torres, W., Pastén, M., and Sánchez, O.:
Risk Management at the Latin American Observatory, in: Risk Management –
Current Issues and Challenges, InTech Publications, 533–556,
https://doi.org/10.5772/50788, 2012.
Nogueira, T., Dominutti, P. A., De Carvalho, L. R. F., Fornaro, A., and
Andrade, M. F.: Formaldehyde and acetaldehyde measurements in urban
atmosphere impacted by the use of ethanol biofuel: Metropolitan Area of Sao
Paulo, 2012–2013, Fuel, 134, 505–513, 2014.
Odum, J. R., Hoffmann, T., Bowman, F., Collins, D., Flagan, R. C., and
Seinfeld, J. H.: Gas/particle partitioning and secondary organic aerosol
yields, Environ. Sci. Technol., 30, 2580–2585, 1996.
Pankow, J. F.: An absorption model of the gas aerosol partitioning involved
in the formation of secondary organic aerosol, Atmos. Environ., 28, 185–188,
1994a.
Pankow, J. F.: An absorption model of the gas aerosol partitioning involved
in the formation of secondary organic aerosol, Atmos. Environ., 28, 189–193,
1994b.
Pérez-Martínez, P. J., Miranda, R. M., Nogueira, T., Guardani, M.
L., Fornaro, A., Ynoue, R., and Andrade, M. F.: Emission factors of air
pollutants from vehicles measured inside road tunnels in Sao Paulo: case
study comparison, Int. J. Environ. Sci. Technol., 11, 2155–2168, 2014.
Pérez-Martínez, P. J., Andrade, M. F., and Miranda, R. M.:
Traffic-related air quality trends in Sao Paulo, Brazil, J. Geophys. Res.
Atmos., 120, 6290–6304, https://doi.org/10.1002/2014JD022812, 2015.
Real, E. and Sartelet, K.: Modeling of photolysis rates over Europe: impact
on chemical gaseous species and aerosols, Atmos. Chem. Phys., 11, 1711–1727,
https://doi.org/10.5194/acp-11-1711-2011, 2011.
Salvo, A. and Geiger, F. M.: Reduction in local ozone levels in urban Sao
Paulo due to a shift from ethanol to gasoline use, Nat. Geosci., 7, 450–458,
https://doi.org/10.1038/ngeo2144, 2014.
Saxena, P., Hudischewskyj, A. B., Seigneur, C., and Seinfeld, J. H.: A
comparative study of equilibrium approaches to the chemical characterization
of secondary aerosols, Atmos. Environ., 20, 1471–1483, 1986.
Schell, B., Ackerman, I. J., Hass, H., Binkowski, F. S., and Ebel, A.:
Modelling the formation of secondary organic aerosol within a comprehensive
air quality model system, J. Geophys. Res., 106, 28275–28293, 2001.
Seinfeld, J. H. and Pandis, S. N.: Atmospheric Chemistry and Physics: from
air pollution to climate change, Second Edition, John Wiley, New Jersey, USA,
2006.
Shrivastava, M., Berg, L. K., Fast, J. F., Easter, R. C., Laskin, A.,
Chapman, E. G., Gustafson Jr., W. I., Liu, Y., and Berkowitz, C. M.:
Modelling aerosols and their interactions with shallow cumuli during the 2007
CHAPS field study, J. Geophys. Res.-Atmos., 118, 1343–1360, 2013.
Taylor, K. E.: Summarizing multiple aspects of model performance in a single
diagram, J. Geophys. Res., 106, 7183–7192, https://doi.org/10.1029/2000JD900719, 2001.
Tuccella, P., Curci, G., Visconti, G., Bessagnet, B., Menut, L., and Park, R.
J.: Modelling of gas and aerosol with WRF-Chem over Europe: Evaluation and
sensitivity study, J. Geophys. Res., 117, D03303, https://doi.org/10.1029/2011JD016302,
2012.
Vasconcellos, P. C., Souza, D. Z., Sanchez-Ccoyllo, O. R., Bustillos, J. O.
V., Lee, H., Santos, F. C., Nascimento, K. H., Araujo, M. P., Saarnio, K.,
Teinila, K., and Hillamo, R.: Determination of anthropogenic and biogenic
compounds on atmospheric aerosol collected in urban, biomass burning and
forest areas in Sao Paulo, Brazil, Sci. Total Environ., 408, 5836–5844,
2010.
Vieira-Filho, M. S., Pedrotti, J. J., and Fornaro, A.: Contribution of long
and mid-range transport on the sodium and potassium concentrations in
rainwater samples, Sao Paulo megacity, Brazil, Atmos. Environ., 79, 299–307,
2013.
Wedding, J. B., Weigand, M., John, W., and Wall, S.: Sampling effectiveness
of the inlet to the dichotomous sampler, Environ. Sci. Technol., 14,
1367–1370, 1980.
Ynoue, R. Y. and Andrade, M. F.: Size-resolved mass balance of aerosol
particles over the Sao Paulo Metropolitan Area of Brazil, Aerosol Sci. Tech.,
1, 52–62, 2004.
Short summary
This study provides a first step to understand the impact of vehicular emissions on the formation of secondary particles as well as the feedback between these particles and meteorology in the Sao Paulo Metropolitan Area (SPMA). Among the main research findings are:
- The emissions of primary gases from vehicles led to a production between 20 and 30 % due to new particles formation in relation to the total mass concentration PM2.5 in the downtown SPMA.
This study provides a first step to understand the impact of vehicular emissions on the...
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