Article
Meteorology & Atmospheric Sciences
Rongzhi Tang, Song Guo, Quanyang Lu, Kai Song, Yuanzheng Gong, Rui Tan, Kefan Liu, Hui Wang, Ying Yu, Ruizhe Shen, Shiyi Chen, Limin Zeng, Spiro D. Jorga, Allen L. Robinson
Summary: This study characterized ambient IVOCs in Beijing and conducted a comprehensive closure study of ambient SOA production using top-down and bottom-up approaches. The results showed that IVOCs were the dominant contributor to SOA formation in Beijing, and other sources like diesel vehicles and cooking emissions may also play an important role.
ATMOSPHERIC RESEARCH
(2023)
Article
Engineering, Environmental
Ke Wang, Weignag Wang, Cici Fan, Junling Li, Ting Lei, Wenyu Zhang, Bo Shi, Yan Chen, Mingyuan Liu, Chaofan Lian, Zhe Wang, Maofa Ge
Summary: This study investigated the reaction rate constants and secondary organic aerosol (SOA) formation of long-chain alkanes reacting with chlorine atoms in the atmosphere. The gas-phase products were identified as aldehydes, ketones, and acids, while the particle-phase products were mostly monomers and oligomers. The study found that the SOA yields were higher under high-NOx conditions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Houssni Lamkaddam, Josef Dommen, Ananth Ranjithkumar, Hamish Gordon, Gunther Wehrle, Jordan Krechmer, Francesca Majluf, Daniil Salionov, Julia Schmale, Sasa Bjelic, Kenneth S. Carslaw, Imad El Haddad, Urs Baltensperger
Summary: The study reveals that processing isoprene oxidation products in cloud droplets can produce a significant amount of secondary organic aerosol, which may have a substantial impact on the global aerosol burden.
Article
Multidisciplinary Sciences
Wei Nie, Chao Yan, Liwen Yang, Pontus Roldin, Yuliang Liu, Alexander L. Vogel, Ugo Molteni, Dominik Stolzenburg, Henning Finkenzeller, Antonio Amorim, Federico Bianchi, Joachim Curtius, Lubna Dada, Danielle C. Draper, Jonathan Duplissy, Armin Hansel, Xu-Cheng He, Victoria Hofbauer, Tuija Jokinen, Changhyuk Kim, Katrianne Lehtipalo, Leonid Nichman, Roy L. Mauldin, Vladimir Makhmutov, Bernhard Mentler, Andrea Mizelli-Ojdanic, Tuukka Petaja, Lauriane L. J. Quelever, Simon Schallhart, Mario Simon, Christian Tauber, Antonio Tome, Rainer Volkamer, Andrea C. Wagner, Robert Wagner, Mingyi Wang, Penglin Ye, Haiyan Li, Wei Huang, Ximeng Qi, Sijia Lou, Tengyu Liu, Xuguang Chi, Josef Dommen, Urs Baltensperger, Imad El Haddad, Jasper Kirkby, Douglas Worsnop, Markku Kulmala, Neil M. Donahue, Mikael Ehn, Aijun Ding
Summary: The interaction between nitrogen monoxide (NO) and organic peroxy radicals (RO2) has a significant impact on the formation of highly oxygenated organic molecules (HOM), which are key precursors of secondary organic aerosols. Contrary to previous belief, low concentrations of NO can enhance HOM production by modulating RO2 loss and promoting the formation of alkoxy radicals. This challenges the notion that NO monotonically reduces HOM yields and expands the understanding of RO2-NO interactions.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Masayuki Takeuchi, Thomas Berkemeier, Gamze Eris, Nga Lee Ng
Summary: This study investigates the formation and properties of secondary organic aerosol (SOA) from the nitrate radical oxidation of α-pinene and limonene. It found that when both monoterpenes are oxidized simultaneously, there is an increase in SOA formation for α-pinene and a decrease in SOA formation for limonene. These non-linear effects were not observed in sequential oxidation experiments.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Yuan Zhang, Jingsen Fan, Kai Song, Yuanzheng Gong, Daqi Lv, Zichao Wan, Tianyu Li, Chaoyi Zhang, Sihua Lu, Shiyi Chen, Limin Zeng, Song Guo
Summary: In this study, 97 volatile organic compounds (VOCs) and 80 intermediate volatility and semi-volatile organic compounds (IVOCs and SVOCs) were measured. Alkanes and polycyclic aromatic hydrocarbons (PAHs) were found to be the main compounds of total S/IVOCs. The oxidation of VOCs and S/IVOCs contributed to the formation of secondary organic aerosol (SOA) with comparable mass.
Article
Engineering, Environmental
Ziying Lei, Yuzhi Chen, Yue Zhang, Madeline E. Cooke, Isabel R. Ledsky, N. Cazimir Armstrong, Nicole E. Olson, Zhenfa Zhang, Avram Gold, Jason D. Surratt, Andrew P. Ault
Summary: The study demonstrates that initial aerosol acidity plays a significant role in shaping the physicochemical properties of SOA formed from IEPDX, with higher acidity resulting in more organosulfate formation and a tendency for the organic phase to transition to a semi-solid or solid state. These findings can be used to improve model parameterizations of SOA formation and properties from IEPDX to better align predictions with atmospheric observations.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Li-Ming Cao, Jing Wei, Ling-Yan He, Hui Zeng, Meng-Lin Li, Qiao Zhu, Guang-He Yu, Xiao-Feng Huang
Summary: This study found that in the northern hemisphere winter, the evolution of SOA in aerosols on BC particles may differ from that in the bulk aerosol, with transition metals playing a catalytic role in SOA formation. Additional research is needed to further explore the potential role of BC and transition metals as catalysts for OA aging and the co-benefit of BC and transition metals pollution control in reducing SOA in the atmosphere.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Ying Yu, Song Guo, Hui Wang, Ruizhe Shen, Wenfei Zhu, Rui Tan, Kai Song, Zirui Zhang, Shuangde Li, Yunfa Chen, Min Hu
Summary: This study investigates the formation of secondary organic aerosol (SOA) from Chinese domestic cooking emissions using a Gothenburg potential aerosol mass reactor. It found that factors such as the types of volatile organic compounds and semivolatile/intermediate-volatility organic compounds, as well as cooking styles, have a greater impact on SOA formation from cooking emissions than the cooking materials themselves. Additionally, comprehensive characterization of semivolatile/intermediate-volatility organic compounds is urgently needed for a better understanding of SOA formation from cooking emissions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Yingqi Wang, Yue Zhao, Ziyue Li, Chenxi Li, Naiqiang Yan, Huayun Xiao
Summary: The presence of isoprene significantly suppresses particle formation from the oxidation of alpha-pinene due to the termination of organic peroxy radicals (RO2) arising from alpha-pinene by those from the OH oxidation of isoprene. The suppression effect is more pronounced in the O-3/OH two-oxidant regime compared to the O-3-only regime. The results suggest that the isoprene suppression effect on particle formation from monoterpenes is strongly dependent on the level of OH in the atmosphere.
ACS EARTH AND SPACE CHEMISTRY
(2021)
Article
Environmental Sciences
Jing Duan, Ru-Jin Huang, Yifang Gu, Chunshui Lin, Haobin Zhong, Ying Wang, Wei Yuan, Haiyan Ni, Lu Yang, Yang Chen, Douglas R. Worsnop, Colin O'Dowd
Summary: This study investigated the formation and evolution of SOA in summer in Xi'an, revealing that photochemical oxidation processes played a dominant role in SOA formation, generating both LO-OOA and MO-OOA during both fog-rain days and non-fog-rain days. A significant increase in aq-OOA was observed during fog-rain days, driven by high RH and ALWC, with air masses from east and southeast favoring the formation of long-time fog-rain days during summer in Xi'an.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Meteorology & Atmospheric Sciences
Dongmei Cai, Xinke Wang, Christian George, Tiantao Cheng, Hartmut Herrmann, Xiang Li, Jianmin Chen
Summary: This study characterized atmospheric particulate nitroaromatic compounds (NACs) in urban Shanghai and investigated their seasonal and diel variations and formation pathways. The results showed that the total number and abundance of NACs increased significantly during air pollution episodes, with higher levels in winter compared to summer. Nitrophenol and nitrocatechol were identified as the most abundant NACs species. The formation of NACs was found to be sensitive to NO2 under low-NOx conditions and became independent of NO2 under high-NOx conditions. The decline in nitrate concentrations could lead to increased importance of NACs in aerosol properties.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Review
Meteorology & Atmospheric Sciences
Li Xu, Lin Du, Narcisse T. Tsona, Maofa Ge
Summary: Anthropogenic emissions significantly impact the formation of biogenic secondary organic aerosol through changes in radical chemistry, gas-particle partitioning, and sulfuric acid formation. Effective pollutant mitigation policies are crucial in reducing the formation of biogenic SOA and improving the overall air quality.
ADVANCES IN ATMOSPHERIC SCIENCES
(2021)
Article
Environmental Sciences
Rui Tan, Song Guo, Sihua Lu, Hui Wang, Wenfei Zhu, Ying Yu, Rongzhi Tang, Ruizhe Shen, Kai Song, Daqi Lv, Wenbin Zhang, Zhou Zhang, Shijin Shuai, Shuangde Li, Yunfa Chen, Yan Ding
Summary: In this study, volatile organic compounds (VOCs) from vehicle exhaust and cooking fumes were investigated. The study identified the distinct characteristics of VOCs emitted during both processes. It was found that cooking VOCs have a significant potential contribution to atmospheric ozone. The study also highlighted the importance of VOCs produced by cooking fumes and suggested the need for further research on semi-volatile organic compounds produced by cooking emissions.
Article
Environmental Sciences
Youwei Hong, Xinbei Xu, Dan Liao, Taotao Liu, Xiaoting Ji, Ke Xu, Chunyang Liao, Ting Wang, Chunshui Lin, Jinsheng Chen
Summary: This study examined the formation of biogenic secondary organic aerosol (BSOA) in the southeast of China during summer and winter. The results showed that season, meteorological parameters, and chemical compositions have significant effects on the formation of BSOA. BSOA formation in summer is mainly influenced by photochemical oxidation, while in winter, it is mainly influenced by anthropogenic emissions.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Environmental
Mihnea Surdu, Houssni Lamkaddam, Dongyu S. Wang, David M. Bell, Mao Xiao, Chuan Ping Lee, Dandan Li, Lucia Caudillo, Guillaume Marie, Wiebke Scholz, Mingyi Wang, Brandon Lopez, Ana A. . Piedehierro, Farnoush Ataei, Rima Baalbaki, Barbara Bertozzi, Pia Bogert, Zoe Brasseur, Lubna Dada, Jonathan Duplissy, Henning Finkenzeller, Xu-Cheng He, Kristina Hohler, Kimmo Korhonen, Jordan E. Krechmer, Katrianne Lehtipalo, Naser G. A. . Mahfouz, Hanna E. Manninen, Ruby Marten, Dario Massabo, Roy Mauldin, Tuukka Petaja, Joschka Pfeifer, Maxim Philippov, Birte Rorup, Mario Simon, Jiali Shen, Nsikanabasi Silas Umo, Franziska Vogel, Stefan K. . Weber, Marcel Zauner-Wieczorek, Rainer Volkamer, Harald Saathoff, Ottmar Moehler, Jasper Kirkby, Douglas R. Worsnop, Markku Kulmala, Frank Stratmann, Armin Hansel, Joachim Curtius, Andre Welti, Matthieu Riva, Neil M. Donahue, Urs Baltensperger, Imad El Haddad
Summary: This study investigates the effect of high relative humidity (RH) on the gas-particle partitioning of biogenic oxidized organic molecules at low temperatures. The results demonstrate that high RH increases the partitioning of semivolatile compounds and leads to a shift in the chemical composition and volatility distribution of organic aerosols towards less oxygenated and more volatile species.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Henning Finkenzeller, Siddharth Iyer, Xu-Cheng He, Mario Simon, Theodore K. Koenig, Christopher F. Lee, Rashid Valiev, Victoria Hofbauer, Antonio Amorim, Rima Baalbaki, Andrea Baccarini, Lisa Beck, David M. Bell, Lucia Caudillo, Dexian Chen, Randall Chiu, Biwu Chu, Lubna Dada, Jonathan Duplissy, Martin Heinritzi, Deniz Kemppainen, Changhyuk Kim, Jordan Krechmer, Andreas Kurten, Alexandr Kvashnin, Houssni Lamkaddam, Chuan Ping Lee, Katrianne Lehtipalo, Zijun Li, Vladimir Makhmutov, Hanna E. Manninen, Guillaume Marie, Ruby Marten, Roy L. Mauldin, Bernhard Mentler, Tatjana Muller, Tuukka Petaja, Maxim Philippov, Ananth Ranjithkumar, Birte Rorup, Jiali Shen, Dominik Stolzenburg, Christian Tauber, Yee Jun Tham, Antonio Tome, Miguel Vazquez-Pufleau, Andrea C. Wagner, Dongyu S. Wang, Mingyi Wang, Yonghong Wang, Stefan K. Weber, Wei Nie, Yusheng Wu, Mao Xiao, Qing Ye, Marcel Zauner-Wieczorek, Armin Hansel, Urs Baltensperger, Jerome Brioude, Joachim Curtius, Neil M. Donahue, Imad El Haddad, Richard C. Flagan, Markku Kulmala, Jasper Kirkby, Mikko Sipila, Douglas R. Worsnop, Theo Kurten, Matti Rissanen, Rainer Volkamer
Summary: Iodine is an active trace element in atmospheric chemistry that can destroy ozone and form particles. Its emissions have increased threefold since 1950 and are expected to continue rising. In laboratory experiments, iodooxy hypoiodite (IOIO) was shown to efficiently convert into iodic acid (HIO3) via reactions IOIO + O-3 -> IOIO4 and IOIO4 + H2O -> HIO3 + HOI + O-(1)(2). This laboratory-derived mechanism explains field observations of daytime HIO3 in the remote lower free troposphere and suggests a catalytic role of iodine in aerosol formation.
Article
Engineering, Environmental
Zhe Peng, Shelly L. Miller, Jose L. Jimenez
Summary: Air disinfection using germicidal ultraviolet light (GUV) has gained attention during the COVID-19 pandemic. This study investigates the impact of GUV on indoor-air-quality by modeling the chemistry initiated by GUV in a typical indoor setting. The analysis shows that GUV can photolyze ozone (O3) and generate hydroxyl radicals (OH) that oxidize indoor volatile organic compounds (VOCs) into more oxidized VOCs. GUV also leads to the formation of secondary organic aerosol (SOA).
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Carsten Warneke, Joshua P. Schwarz, Jack Dibb, Olga Kalashnikova, Gregory Frost, Jassim Al-Saad, Steven S. Brown, Wm Alan Brewer, Amber Soja, Felix C. Seidel, Rebecca A. Washenfelder, Elizabeth B. Wiggins, Richard H. Moore, Bruce E. Anderson, Carolyn Jordan, Tara Yacovitch, Scott C. Herndon, Shang Liu, Toshihiro Kuwayama, Daniel Jaffe, Nancy Johnston, Vanessa Selimovic, Robert Yokelson, David M. Giles, Brent N. Holben, Philippe Goloub, Ioana Popovici, Michael Trainer, Aditya Kumar, R. Bradley Pierce, David Fahey, James Roberts, Emily M. Gargulinski, David A. Peterson, Xinxin Ye, Laura H. Thapa, Pablo E. Saide, Charles H. Fite, Christopher D. Holmes, Siyuan Wang, Matthew M. Coggon, Zachary C. J. Decker, Chelsea E. Stockwell, Lu Xu, Georgios Gkatzelis, Kenneth Aikin, Barry Lefer, Jackson Kaspari, Debora Griffin, Linghan Zeng, Rodney Weber, Meredith Hastings, Jiajue Chai, Glenn M. Wolfe, Thomas F. Hanisco, Jin Liao, Pedro Campuzano Jost, Hongyu Guo, Jose L. Jimenez, James Crawford
Summary: The NOAA/NASA Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) experiment aimed to study the impact of fires on regional and global environments and air quality. The experiment measured trace gas and aerosol emissions, observed fire dynamics, assessed fire modeling, and examined connections to ground and satellite observables. The experiment involved aircraft, satellites, mobile laboratories, and ground sites.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
J. F. Brewer, D. J. Jacob, S. H. Jathar, Y. He, A. Akherati, S. Zhai, D. S. Jo, A. Hodzic, B. A. Nault, P. Campuzano-Jost, J. L. Jimenez, R. J. Park, Y. J. Oak, H. Liao
Summary: We propose a new Volatility Basis Set (VBS) representation for aromatic Secondary Organic Aerosol (SOA) and apply it to atmospheric chemistry models. Our scheme was able to simulate the observations of organic aerosol (OA) from the KORUS-AQ field campaign better than the default schemes used in GEOS-Chem, showing improved representation of vertical profiles, diurnal cycle, and partitioning between hydrocarbon-like OA and oxidized OA. Our results confirm the significant contributions of oxidized primary OA, aromatic SOA, and semi- and intermediate volatile organic compounds (S/IVOCs) to the OA budget in South Korea.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Chemistry, Multidisciplinary
Olivia J. Jenks, Marla P. DeVault, Anna C. Ziola, Melissa A. Morris, Melinda K. Schueneman, Harald Stark, Jose L. Jimenez, Paul J. Ziemann, Joost A. de Gouw
Summary: Organic aerosols have various impacts on climate, visibility, and human health. This study investigates the oxidation of biogenic volatile organic compounds by NO3 radicals to form secondary organic aerosols. The analysis of the first-generation gas-phase products of this reaction provides insights into the sources of organic nitrate in the atmosphere. The results can aid in the interpretation of field data and improve the representation of this chemistry in models.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Tran B. Nguyen, Kelvin H. Bates, Reina S. Buenconsejo, Sophia M. Charan, Eric E. Cavanna, David R. Cocker III, Douglas A. Day, Marla P. DeVault, Neil M. Donahue, Zachary Finewax, Luke F. Habib, Anne V. Handschy, Lea Hildebrandt Ruiz, Chung-Yi S. Hou, Jose L. Jimenez, Taekyu Joo, Alexandra L. Klodt, Weimeng Kong, Chen Le, Catherine G. Masoud, Matthew S. Mayernik, Nga L. Ng, Eric J. Nienhouse, Sergey A. Nizkorodov, John J. Orlando, Jeroen J. Post, Patrick O. Sturm, Bridget L. Thrasher, Geoffrey S. Tyndall, John H. Seinfeld, Steven J. Worley, Xuan Zhang, Paul J. Ziemann
Summary: ICARUS is an open access infrastructure for storing, sharing, discovering, and utilizing atmospheric chamber data. It supports the evaluation and revision of atmospheric model mechanisms, intercomparison of data and models, and the development of new model frameworks.
ACS EARTH AND SPACE CHEMISTRY
(2023)
Article
Engineering, Environmental
Demetrios Pagonis, Vanessa Selimovic, Pedro Campuzano-Jost, Hongyu Guo, Douglas A. Day, Melinda K. Schueneman, Benjamin A. Nault, Matthew M. Coggon, Joshua P. DiGangi, Glenn S. Diskin, Edward C. Fortner, Emily M. Gargulinski, Georgios I. Gkatzelis, Johnathan W. Hair, Scott C. Herndon, Christopher D. Holmes, Joseph M. Katich, John B. Nowak, Anne E. Perring, Pablo Saide, Taylor J. Shingler, Amber J. Soja, Laura H. Thapa, Carsten Warneke, Elizabeth B. Wiggins, Armin Wisthaler, Tara I. Yacovitch, Robert J. Yokelson, Jose L. Jimenez
Summary: Biomass burning particulate matter (BBPM) has significant impacts on air quality and climate, and this impact is expected to increase in the future. Studies have shown that the concentration of BBPM from North American fires is dependent on altitude, with airborne and high-altitude measurements showing a doubling of BBPM compared to ground-based measurements. The volatility of BBPM partially explains the observed differences in concentration across platforms.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Zhe Peng, Douglas A. Day, Guy A. Symonds, Olivia J. Jenks, Harald Stark, Anne V. Handschy, Joost A. de Gouw, Jose L. Jimenez
Summary: Lamps emitting at 222 nm, a type of germicidal ultraviolet disinfection (GUV222), have recently gained attention. However, this study found that these lamps can generate significant amounts of ozone (O-3), which can lead to particulate matter formation and negative health impacts. The production of O-3 by these lamps is influenced by factors such as the removal of optical filters and undesired internal electrical discharge. Guidelines should be developed to limit indoor pollution caused by GUV222, and lower fluence rates should be used if possible, especially in low-ventilation conditions. Low-cost sensors for O-3 and particulate matter were found to be ineffective for investigating the chemistry induced by GUV222.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Correction
Engineering, Environmental
Zhe Peng, Shelly L. Miller, Jose L. Jimenez
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Katherine R. Travis, James. H. Crawford, Amber J. Soja, Emily M. Gargulinski, Richard H. Moore, Elizabeth B. Wiggins, Glenn S. Diskin, Joshua P. Digangi, John B. Nowak, Hannah Halliday, Robert J. Yokelson, Jessica L. Mccarty, Isobel J. Simpson, Donald R. Blake, Simone Meinardi, Rebecca S. Hornbrook, Eric C. Apel, Alan J. Hills, Carsten Warneke, Matthew M. Coggon, Andrew W. Rollins, Jessica B. Gilman, Caroline C. Womack, Michael A. Robinson, Joseph M. Katich, Jeff Peischl, Georgios I. Gkatzelis, Ilann Bourgeois, Pamela S. Rickly, Aaron Lamplugh, Jack E. Dibb, Jose L. Jimenez, Pedro Campuzano-Jost, Douglas A. Day, Hongyu Guo, Demetrios Pagonis, Paul O. Wennberg, John D. Crounse, Lu Xu, Thomas F. Hanisco, Glenn M. Wolfe, Jin Liao, Jason M. St. Clair, Benjamin A. Nault, Alan Fried, Anne E. Perring
Summary: Agricultural and prescribed burning activities emit significant amounts of trace gases and aerosols. This study presents emission factors and ratios based on the FIREX-AQ campaign in the eastern United States in 2019, focusing on burning of crop residues and prescribed fire fuels. The study shows the importance of specific factors such as combustion efficiency, fuel type, and meteorological conditions in determining the emissions.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Environmental Sciences
Laura Tomsche, Felix Piel, Tomas Mikoviny, Claus J. Nielsen, Hongyu Guo, Pedro Campuzano-Jost, Benjamin A. Nault, Melinda K. Schueneman, Jose L. Jimenez, Hannah Halliday, Glenn Diskin, Joshua P. DiGangi, John B. Nowak, Elizabeth B. Wiggins, Emily Gargulinski, Amber J. Soja, Armin Wisthaler
Summary: During the 2019 FIREX-AQ study, the NASA DC-8 conducted in situ chemical measurements on smoke plumes from wildfires and agricultural fires in the United States. The study found high levels of ammonia and particulate ammonium in the smoke plumes, with variations depending on the type of fire and region.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Matthew Boyer, Diego Aliaga, Jakob Boyd Pernov, Helene Angot, Lauriane L. J. Quelever, Lubna Dada, Benjamin Heutte, Manuel Dall'Osto, David C. S. Beddows, Zoe Brasseur, Ivo Beck, Silvia Bucci, Marina Duetsch, Andreas Stohl, Tiia Laurila, Eija Asmi, Andreas Massling, Daniel Charles Thomas, Jakob Kleno Nojgaard, Tak Chan, Sangeeta Sharma, Peter Tunved, Radovan Krejci, Hans Christen Hansson, Federico Bianchi, Katrianne Lehtipalo, Alfred Wiedensohler, Kay Weinhold, Markku Kulmala, Tuukka Petaja, Mikko Sipila, Julia Schmale, Tuija Jokinen
Summary: The Arctic environment is undergoing rapid changes due to accelerated warming. This study investigates the annual cycle of aerosol characteristics in the central Arctic Ocean and compares them to land-based sites across the Arctic. The analysis provides important insights into aerosol processes in the changing Arctic environment and their impact on climate change.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Meteorology & Atmospheric Sciences
Katherine R. Travis, James. H. Crawford, Amber J. Soja, Emily M. Gargulinski, Richard H. Moore, Elizabeth B. Wiggins, Glenn S. Diskin, Joshua P. DiGangi, John B. Nowak, Hannah Halliday, Robert J. Yokelson, Jessica L. McCarty, Isobel J. Simpson, Donald R. Blake, Simone Meinardi, Rebecca S. Hornbrook, Eric C. Apel, Alan J. Hills, Carsten Warneke, Matthew M. Coggon, Andrew W. Rollins, Jessica B. Gilman, Caroline C. Womack, Michael A. Robinson, Joseph M. Katich, Jeff Peischl, Georgios I. Gkatzelis, Ilann Bourgeois, Pamela S. Rickly, Aaron Lamplugh, Jack E. Dibb, Jose L. Jimenez, Pedro Campuzano-Jost, Douglas A. Day, Hongyu Guo, Demetrios Pagonis, Paul O. Wennberg, John D. Crounse, Lu Xu, Thomas F. Hanisco, Glenn M. Wolfe, Jin Liao, Jason M. St. Clair, Benjamin A. Nault, Alan Fried, Anne E. Perring
Summary: Agricultural and prescribed burning activities emit large amounts of trace gases and aerosols on regional to global scales. The FIREX-AQ campaign provides valuable data on emission factors and ratios for crop residues and prescribed fire fuels. The study reveals differences in emission factors and species between crop residue fires and prescribed fires, highlighting the importance of regionally-specific and fuel-specific emission factors in modeling air quality impacts of fire emissions.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)