Article
Environmental Sciences
Gerson P. Almeida
Summary: This study uses observed and modeled data to investigate the relationship between bulk chemical composition and hygroscopicity of urban aerosol pollution in Manaus, Brazil. It predicts the Cloud Condensation Nuclei (CCN) concentration from the Aerosol Size Distribution (ASD) and compares different strategies to improve the accuracy of the prediction. The results show that the knowledge of bulk chemical composition can greatly improve the prediction of Nccx.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Alessandro Zappi, Olga Popovicheva, Laura Tositti, Marina Chichaeva, Irina Eremina, Anne Kasper-Giebl, Ying I. Tsai, Dmitry Vlasov, Nikolay Kasimov
Summary: An in-depth study of aerosol and precipitation ion chemistry in Moscow urban background atmosphere was conducted to fill the gap in seasonal-dependent ionic data. The literature on atmospheric pollution in this megacity is still limited, despite its unique climatic characteristics. The results showed that inorganic ions constitute a significant fraction of PM10, with higher proportions in autumn than in summer. Secondary inorganic aerosol was found to dominate over other inorganic ion species. Sodium and calcium ions exhibited the most variability among seasons. The chloride depletion phenomenon was most pronounced in summer.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Qiongqiong Wang, Jian Zhen Yu
Summary: The study focused on the degradation rates of long-chain unsaturated fatty acids in the atmosphere. By conducting laboratory experiments and field measurements, the nighttime decay rates of oleic acid, elaidic acid, and linoleic acid were obtained, providing valuable data for modeling the heterogeneous aging of ambient organic aerosols.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Engineering, Environmental
Matheus da Silva Ferreira, Mauricio Paulo Ferreira Fontes, Anderson Almeida Pacheco, Joao Carlos Ker, Hedinaldo Narciso Lima
Summary: The city of Manaus, as the largest industrial city in the northern Brazilian region, is characterized by haphazard urbanization. The study aimed to investigate trace element pollution in urban soils and its potential risks to human health. Results showed that some soil samples were considerably or highly contaminated, with a higher carcinogenic risk for Cd and Pb exceeding safety limits. Overall, the noncarcinogenic health risk was considered low for both children and adults.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2021)
Article
Environmental Sciences
Imre Salma, Arpad Farkas, Tamas Weidinger, Miklos Balogh
Summary: Particle number concentrations and size distributions were studied during firework displays in Budapest, Hungary over a period of seven years. The concentrations in the diameter range of 100-1000 nm were elevated by a factor of 20-25 and an extra particle size mode at 203 nm was observed. The smoke had a short atmospheric residence time of 25 min and dispersion simulations showed substantial concentration gradients in the plume.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Lihui Han, Xuemei Yang, Peng Zhang, Qian Xiao, Shuiyuan Cheng, Haiyan Wang, Jinghua Guo, Aihua Zheng
Summary: Through sampling at 53 sites in Beijing and a representative urban site, it was found that road dust particles can easily enter the atmosphere and have a significant impact on the atmospheric environment. By comparing data from 2003 and 2016-2018, significant changes in the composition and sources of pollutants in road dust particles were observed. The research provides important scientific guidance for further controlling atmospheric pollution and improving air quality.
ENVIRONMENTAL POLLUTION
(2023)
Article
Geochemistry & Geophysics
Yunping Chen, Yue Yang, Yaju Xiong, Yuan Sun
Summary: In this study, a novel algorithm called MSHS was developed to retrieve aerosol optical thickness (AOT) for urban surfaces. The algorithm showed higher correlation and lower error compared to the traditional DDV algorithm. This new algorithm can help characterize aerosol distribution patterns within a city in a more refined way and provide support for tracing air pollution sources.
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
(2022)
Article
Environmental Sciences
Huanbo Wang, Leiming Zhang
Summary: A 15-year record of measurement data of gaseous and particulate sulfur and nitrogen pollutants in air collected in western Canada was analyzed to generate their decadal trends. The results showed decreases in the concentrations of SO2, SO42, NO2, and NO3 over the 15-year period. The slower decreases in SO42 compared to SO2 were attributed to factors such as increased O3 concentration and temperature, while the faster decrease in NO3 compared to NO2 in autumn was influenced by decreased temperature and increased aerosol pH value.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Jiayu Li, Sultan Zuraimi, Stefano Schiavon, Man Pun Wan, Jinwen Xiong, Kwok Wai Tham
Summary: This study evaluated the diurnal trends of indoor and outdoor fluorescent biological airborne particles (FBAPs) and their contributions to particulate matter (PM). It was found that both indoor and outdoor PM trends were driven by the bioaerosol component. Outdoor FBAP mass concentration peaked around sunrise and decreased during the daytime and increased at night. Indoor FBAP concentration increased after the HVAC system started and peaked at 8:00 and then decreased. Based on regression modeling, indoor PM, non-FBAP, and FBAP sources contributed 93%, 67%, and 97% to indoor mass concentrations, respectively.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Pharmacology & Pharmacy
Victoria Legh-Land, Allen E. Haddrell, David Lewis, Darragh Murnane, Jonathan P. Reid
Summary: This study investigates the dynamics of particle formation and maturation in pMDI sprays, showing that evaporating aerosol droplets can act as condensation nuclei for water and the rapid vaporization of volatile components is directly correlated to the volume of water taken up by condensation. Droplets with a water activity of 0.98 at inhalation produce markedly different dose deposition profiles compared to those with lower water activities at the point of inspiration.
Article
Geosciences, Multidisciplinary
Salman Tariq, Zia ul-Haq, Ayesha Mariam, Usman Mehmood, Waseem Ahmed
Summary: Recently, a severe forest fire broke out in Turkey, causing significant damage to the country's air quality and economy. The study found that during the fire episode, there was a substantial increase in air pollution, with various pollutants reaching their peak levels.
Article
Environmental Sciences
Marianne Glasius, Ditte Thomsen, Kai Wang, Louise Skov Iversen, Jing Duan, Ru-Jin Huang
Summary: This study investigated the speciation and levels of organosulfates, organosulfonates, and carboxylic acids in aerosol samples collected in Xi'an, Northwest China, during the summer and winter seasons. The results provide insights into the composition and sources of organic aerosols in this heavily polluted region.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Rodrigo de Lima Sobrinho, Gabriel da Costa Pecanha, Thallis Martins de Souza, Luiz Carlos Cotovicz, Luciana Oliveira Vidal, Annibal Duarte Pereira Netto, Marcelo Correa Bernardes
Summary: The Jacarepagu ' a Lagoon System (JLS) in an urban area with high population density and economic activity is highly polluted, experiencing eutrophication, frequent algae blooms, and emissions of greenhouse gases. This study analyzed the organic compounds in the water compartment using biomarkers and found that sewage contaminants in rivers decompose partially in the lagoons. The indices based on n-alkanes indicated strong contamination and petrogenic sources in both the rivers and the lagoon, showing the resilience of these compounds in the ecosystem.
ENVIRONMENTAL POLLUTION
(2023)
Article
Geosciences, Multidisciplinary
Corinna Kloss, Pasquale Sellitto, Jean-Baptiste Renard, Alexandre Baron, Nelson Begue, Bernard Legras, Gwenael Berthet, Emmanuel Briaud, Elisa Carboni, Clair Duchamp, Valentin Duflot, Patrick Jacquet, Nicolas Marquestaut, Jean-Marc Metzger, Guillaume Payen, Marion Ranaivombola, Tjarda Roberts, Richard Siddans, Fabrice Jegou
Summary: Following the eruption of Hunga Tonga, we conducted a balloon-borne characterization of the stratospheric aerosol plume. The results indicate that space-borne observations are insufficient to fully characterize the microphysical properties of the plume, highlighting the necessity of in situ observations.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Plant Sciences
Arerut Yarnvudhi, Nisa Leksungnoen, Tushar Andriyas, Pantana Tor-Ngern, Aerwadee Premashthira, Chongrak Wachrinrat, Dokrak Marod, Sutheera Hermhuk, Sura Pattanakiat, Tohru Nakashizuka, Roger Kjelgren
Summary: This study classified several plant species in a central Bangkok park based on their air pollution tolerance index (APTI) and anticipated performance index (API). The results showed that Melaleuca quinquenervia, Albizia saman, and Chukrasia tabularis had the highest API scores and were able to significantly reduce temperatures. Both evergreen and deciduous species contributed to cooling, but were vulnerable to air pollution. Some species had high air pollution tolerance but did not provide sufficient cooling. These findings are important for urban greenspace landscapers in selecting appropriate species that can provide multiple ecosystem services.
Article
Environmental Sciences
Guilherme Martins Pereira, Thiago Nogueira, Leonardo Yoshiaki Kamigauti, Djacinto Monteiro dos Santos, Emerson Queiroz Mota Nascimento, Jose Vinicius Martins, Ana Vicente, Paulo Artaxo, Celia Alves, Perola de Castro Vasconcellos, Maria de Fatima Andrade
Summary: This study characterized the chemical composition of particulate matter from light- and heavy-duty vehicles in the megacity of Sao Paulo, Brazil. The research identified high abundances of certain elements linked with specific vehicle emissions, and calculated diagnostic ratios for assessing fuel type variations. The findings highlighted the impact of biofuels on chemical species ratios and provided possible markers for differentiating emissions from light- and heavy-duty vehicles.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
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
Environmental Sciences
A. Velazquez-Garcia, S. Crumeyrolle, J. F. de Brito, E. Tison, E. Bourrianne, I. Chiapello, V. Riffault
Summary: The wide range of sources and complex transformation processes of aerosol particles result in strong spatial and temporal variability in their physical, chemical, and optical properties. Accurate representation of these properties is crucial for assessing their impacts, particularly on climate. This study investigates aerosol optical properties and their correlation with fine particle chemical composition in Northern France, using a multi-annual in situ dataset. The findings reveal the significant contributions of ammonium nitrate and organics, highlighting the need for site-specific values to accurately assess the impact of different aerosol species on extinction. The study emphasizes the importance of combined aerosol chemical and physical observations to better estimate their role in climate change and reduce uncertainties in future scenarios based on mitigation strategies.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Engineering, Environmental
Emily B. Franklin, Lindsay D. Yee, Rebecca Wernis, Gabriel Isaacman-VanWertz, Nathan Kreisberg, Robert Weber, Haofei Zhang, Brett B. Palm, Weiwei Hu, Pedro Campuzano-Jost, Douglas A. Day, Antonio Manzi, Paulo Artaxo, Rodrigo A. F. De Souza, Jose L. Jimenez, Scot T. Martin, Allen H. Goldstein
Summary: Urbanization and fires have a significant impact on the quantities and composition of organic aerosol in the central Amazon, affecting radiative forcing and public health. The composition of ambient organic aerosol is complex and not fully understood, with limited knowledge about the different compounds present. Through analysis of aerosol samples, it was found that fires and urban emissions have distinct effects on the chemical signatures, and only a portion of compounds were observed in both seasons. This study highlights the need for further research to fill the knowledge gaps in understanding the speciation of organic aerosol in the Amazon.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Public, Environmental & Occupational Health
Ismael Henrique Silveira, Shaiana Vilella Hartwig, Mauricio Nascimento Moura, Taisa Rodrigues Cortes, Washington Leite Junger, Glauber Cirino, Eliane Ignotti, Beatriz Fatima Alves de Olivera
Summary: This study investigated the effects of heat waves on mortality in the Brazilian Amazon and found that heat waves were associated with a higher risk of mortality from non-external causes and cardiovascular diseases. The intensity of the heat wave played a more important role than the duration in determining this risk. The elderly and women appeared to be more vulnerable to the effects of heat waves on mortality.
INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH
(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
Environmental Sciences
Marjan Savadkoohi, Marco Pandolfi, Cristina Reche, Jarkko V. Niemi, Dennis Mooibroek, Gloria Titos, David C. Green, Anja H. Tremper, Christoph Hueglin, Eleni Liakakou, Nikos Mihalopoulos, Iasonas Stavroulas, Begona Artinano, Esther Coz, Lucas Alados-Arboledas, David Beddows, Veronique Riffault, Joel F. De Brito, Susanne Bastian, Alexia Baudic, Cristina Colombi, Francesca Costabile, Benjamin Chazeau, Nicolas Marchand, Jose Luis Gomez-Amo, Victor Estelles, Violeta Matos, Ed van der Gaag, Gregory Gille, Krista Luoma, Hanna E. Manninen, Michael Norman, Sanna Silvergren, Jean-Eudes Petit, Jean-Philippe Putaud, Oliver V. Rattigan, Hilkka Timonen, Thomas Tuch, Maik Merkel, Kay Weinhold, Stergios Vratolis, Jeni Vasilescu, Olivier Favez, Roy M. Harrison, Paolo Laj, Alfred Wiedensohler, Philip K. Hopke, Tuukka Petaja, Andres Alastuey, Xavier Querol
Summary: This study analyzed the variability and sources of equivalent black carbon (eBC) mass concentrations in urban Europe, emphasizing the need for harmonization of eBC measurements. The results showed a decreasing trend of eBC mass concentrations from traffic sites to urban background sites to suburban sites to regional background sites. There was also a clear decreasing trend in eBC concentrations from Southern to Northern Europe. Furthermore, the study revealed significant spatiotemporal heterogeneity in eBC concentrations and variable contributions of different pollution sources.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Engineering, Environmental
Duseong S. Jo, Benjamin A. Nault, Simone Tilmes, Andrew Gettelman, Christina S. Mccluskey, Alma Hodzic, Daven K. Henze, Muhammad Omar Nawaz, Ka Ming Fung, Jose L. Jimenez
Summary: This study quantifies the health and climate effects of organic aerosols (OA) from anthropogenic, biomass burning, and biogenic sources. The findings show that anthropogenic primary OA (POA) has the highest efficiency for health effects but the lowest for direct radiative effects. Biogenic OA exhibits moderate efficiency for health effects and the highest for direct radiative effects, while biomass burning OA plays a significant role in cloud radiative effect changes in remote atmospheres.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Mira L. Poehlker, Christopher Poehlker, Johannes Quaas, Johannes Muelmenstaedt, Andrea Pozzer, Meinrat O. Andreae, Paulo Artaxo, Karoline Block, Hugh Coe, Barbara Ervens, Peter Gallimore, Cassandra J. Gaston, Sachin S. Gunthe, Silvia Henning, Hartmut Herrmann, Ovid O. Krueger, Gordon Mcfiggans, Laurent Poulain, Subha S. Raj, Ernesto Reyes-Villegas, Haley M. Royer, David Walter, Yuan Wang, Ulrich Poeschl
Summary: This study investigates the aerosol concentration and chemical composition in diverse environments globally and finds that the hygroscopicity of aerosols can be accurately derived through a linear combination, providing crucial constraints for global climate modeling.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Kevin J. Nihill, Matthew M. Coggon, Christopher Y. Lim, Abigail R. Koss, Bin Yuan, Jordan E. Krechmer, Kanako Sekimoto, Jose L. Jimenez, Joost de Gouw, Christopher D. Cappa, Colette L. Heald, Carsten Warneke, Jesse H. Kroll
Summary: Biomass burning is a significant source of reactive organic carbon in the atmosphere. Experiments conducted as part of the FIREX FireLab campaign reveal that the atmospheric oxidation of organic carbon from biomass burning leads to the formation of smaller and more oxidized species. The oxidative evolution of biomass burning emissions appears to be independent of fuel type, resulting in a common aged distribution of gas-phase compounds consisting of small volatile oxygenates and various minor oxidized species and secondary organic aerosols.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Haihui Zhu, Randall V. Martin, Betty Croft, Shixian Zhai, Chi Li, Liam Bindle, Jeffrey R. Pierce, Rachel Y. -W. Chang, Bruce E. Anderson, Luke D. Ziemba, Johnathan W. Hair, Richard A. Ferrare, Chris A. Hostetler, Inderjeet Singh, Deepangsu Chatterjee, Jose L. Jimenez, Pedro Campuzano-Jost, Benjamin A. Nault, Jack E. Dibb, Joshua S. Schwarz, Andrew Weinheimer
Summary: This study uses a global chemical transport model to analyze airborne measurements from the United States and South Korea, and proposes a parameterization method for representing aerosol size. This method improves the agreement between the simulation model and ground-measured data.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(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
Viral Shah, Daniel J. Jacob, Ruijun Dang, Lok N. Lamsal, Sarah A. Strode, Stephen D. Steenrod, K. Folkert Boersma, Sebastian D. Eastham, Thibaud M. Fritz, Chelsea Thompson, Jeff Peischl, Ilann Bourgeois, Ilana B. Pollack, Benjamin A. Nault, Ronald C. Cohen, Pedro Campuzano-Jost, Jose L. Jimenez, Simone T. Andersen, Lucy J. Carpenter, Tomas Sherwen, Mat J. Evans
Summary: Satellite-based retrievals of tropospheric NO2 columns are widely used to infer NOx emissions. These retrievals rely on model information for the vertical distribution of NO2. Free tropospheric background above 2 km is important for these retrievals and has a significant impact on tropospheric OH and ozone concentrations.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Suzanne Crumeyrolle, Jenni S. S. Kontkanen, Clemence Rose, Alejandra Velazquez Garcia, Eric Bourrianne, Maxime Catalfamo, Veronique Riffault, Emmanuel Tison, Joel Ferreira de Brito, Nicolas Visez, Nicolas Ferlay, Frederique Auriol, Isabelle Chiapello
Summary: This study examined the environmental factors influencing the formation of ultrafine particles (UFPs) in the urban atmosphere of Lille, France. The results showed that high temperature, low relative humidity, and high solar radiation were ideal conditions for observing new particle formation (NPF) events. The particle growth rate was positively correlated with temperature, and NPF events had a significant contribution to particle number concentration, especially during summer.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Muhammad Waqas, Majid Nazeer, Man Sing Wong, Wu Shaolin, Li Hon, Joon Heo
Summary: The socio-economic restriction measures implemented in the United States have significantly reduced nitrogen dioxide (NO2) emissions. The study highlights the impact of factors such as human mobility, population density, income, climate, and stationary sources on the reduction of NO2 at different stations. The research emphasizes the scientific impacts of the NO2 reduction and income inequality revealed by the pandemic on air quality and health disparities.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Guorui Zhi, Jinhong Du, Aizhong Chen, Wenjing Jin, Na Ying, Zhihui Huang, Peng Xu, Di Wang, Jinghua Ma, Yuzhe Zhang, Jiabao Qu, Hao Zhang, Li Yang, Zhanyun Ma, Yanjun Ren, Hongyan Dang, Jianglong Cui, Pengchuan Lin, Zhuoshi He, Jinmin Zhao, Shuo Qi, Weiqi Zhang, Wenjuan Zhao, Yingxin Li, Qian Liu, Chen Zhao, Yi Tang, Peng Wei, Jingxu Wang, Zhen Song, Yao Kong, Xiangzhe Zhu, Yi Shen, Tianning Zhang, Yangxi Chu, Xinmin Zhang, Jiafeng Fu, Qingxian Gao, Jingnan Hu, Zhigang Xue
Summary: An comprehensive emission inventory for China in 2019, which includes both air pollutants and greenhouse gases, was developed in this study. The inventory utilizes existing frameworks and data to provide comparable emissions data and demonstrates the relationship between emissions and economic development.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
I-Ting Ku, Yong Zhou, Arsineh Hecobian, Katherine Benedict, Brent Buck, Emily Lachenmayer, Bryan Terry, Morgan Frazier, Jie Zhang, Da Pan, Lena Low, Amy Sullivan, Jeffrey L. Collett Jr
Summary: Unconventional oil and natural gas development (UOGD) in the United States has expanded rapidly in recent decades, raising concerns about its impact on air quality. This study conducted extensive air monitoring during the development of several large well pads in Broomfield, Colorado, providing a unique opportunity to examine changes in local air toxics and VOC concentrations during well drilling and completions and production. The study identified significant increases in VOC concentrations during drilling operations, highlighting the importance of emissions from synthetic drilling mud. The findings suggest opportunities to mitigate emissions during UOGD operations.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Puji Lestari, Akbar R. Tasrifani, Wiranda I. Suri, Martin J. Wooster, Mark J. Grosvenor, Yusuke Fujii, Vissia Ardiyani, Elisa Carboni, Gareth Thomas
Summary: This study developed field emission factors for various pollutants in peatland fires and estimated the total emissions. Gas samples were collected using an analyzer, while particulate samples were collected using air samplers. The study found significant emissions of CO2, CO, PM2.5, carbon aerosols, water-soluble ions, and elements from the fires in Central Kalimantan, Indonesia in 2019.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Ligang Li, Yuyu Chen, Lu Fan, Dong Sun, Hu He, Yongshou Dai, Yong Wan, Fangfang Chen
Summary: A high-precision retrieval method based on a deep convolutional neural network and satellite remote sensing data is proposed to obtain accurate methane vertical profiles.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Hyung Joo Lee, Toshihiro Kuwayama, Michael Fitzgibbon
Summary: This study investigated the changes in nitrogen dioxide (NO2) air pollution levels and their disparities in California, U.S. during the pandemic of coronavirus disease 2019 (COVID-19). The results showed a decrease in NO2 concentrations, especially in urban and high-traffic areas. However, socially vulnerable populations still experienced higher levels of NO2 exposure. The study suggests that reducing NO2 disparities, particularly racial inequity, can be achieved through continued regulatory actions targeting traffic-related NOx emissions.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Maria Chiara Pietrogrande, Beatrice Biffi, Cristina Colombi, Eleonora Cuccia, Umberto Dal Santo, Luisa Romanato
Summary: This study investigates the chemical composition and oxidative potential of PM10 particles in the Po Valley, Italy, and demonstrates the impact of high levels of atmosphere ammonia. The rural area had significantly higher ammonia concentrations compared to the urban site, resulting in higher levels of secondary inorganic aerosol. Although the SIA components did not contribute significantly to the PM10 oxidative reactivity, they were correlated with the oxidative potential measurements. This suggests that the contribution of SIA to PM oxidative toxicity cannot be ignored.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Natalie Allen, Jan Gacnik, Sarrah M. Dunham-Cheatham, Mae Sexauer Gustin
Summary: Accurate measurement of atmospheric reactive mercury is challenging due to its reactivity and low concentrations. The University of Nevada, Reno Reactive Mercury Active System (RMAS) has been shown to be more accurate than the industry standard, but has limitations including long time resolution and sampling biases. Increasing the sampling flow rate negatively affected RM concentrations, but did not impact the chemical composition of RM captured on membranes.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Chin-Yu Hsu, Wei-Ting Hsu, Ching-Yi Mou, Pei-Yi Wong, Chih-Da Wu, Yu-Cheng Chen
Summary: This study estimated the daily exposure concentrations of PM2.5 for elderly individuals residing in different regions of Taiwan using land use regression with machine learning (LUR_ML) and microenvironmental exposure (ME) models. The accuracy of the models varied across regions, with the ME models exhibiting higher predictions and lower biases. The use of region-specific microenvironmental measurements in the ME model showed potential for accurate prediction of personal PM2.5 exposure.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Xiaohan Si, Kerrie Mengersen, Chuchu Ye, Wenbiao Hu
Summary: This study found that there is an interactive effect between air pollutants and weather factors, which significantly affects influenza transmission. Future research should consider the interactive effects between pollutants and temperature or humidity to evaluate the environment-influenza association.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Luxi Xu, Ruijun Xu, Yunshao Ye, Rui Wang, Jing Wei, Chunxiang Shi, Qiaoxuan Lin, Ziquan Lv, Suli Huang, Qi Tian, Yuewei Liu
Summary: This study aimed to evaluate the impact of ambient air pollution on hospital admissions for angina. The results showed that exposure to ambient particulate matter, sulfur dioxide, nitrogen dioxide, carbon monoxide, and ozone are associated with an increased risk of hospital admissions for angina. The association with nitrogen dioxide exposure was found to be the strongest.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Xinyu Yu, Man Sing Wong, Majid Nazeer, Zhengqiang Li, Coco Yin Tung Kwok
Summary: This study proposes a novel method to address the challenge of missing values in satellite-derived AOD products and creates a comprehensive daily AOD dataset for the Guangdong-Hong Kong-Macao Greater Bay Area. By reconstructing missing values and developing a new model, the derived dataset outperforms existing products and agrees well with ground-based observations. Additionally, the dataset exhibits consistent temporal patterns and more spatial details.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Yidan Zhang, Yifan Xu, Bo Peng, Wu Chen, Xiaoyu Cui, Tianle Zhang, Xi Chen, Yuan Yao, Mingjin Wang, Junyi Liu, Mei Zheng, Tong Zhu
Summary: This study developed a sensitive method to measure the metallic components of atmospheric fine particulate matter (PM2.5) and compared the results with different analysis methods. The concentrations of metallic components in personal PM2.5 samples were found to be significantly different from corresponding fixed-site samples. Personal sampling can reduce exposure misclassifications, and measuring metallic components is useful for exploring health risks and identifying sources of PM2.5.
ATMOSPHERIC ENVIRONMENT
(2024)
Review
Environmental Sciences
Jamie Leonard, Lea Ann El Rassi, Mona Abdul Samad, Samantha Prehn, Sanjay K. Mohanty
Summary: Increasing concentrations of microplastics in the Earth's atmosphere could have adverse effects on ecosystems and human health. The deposition rate of airborne microplastics is influenced by both land use and climate, and a global analysis suggests that climate may have a greater impact on the concentration and deposition rate of microplastics than land use.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Tian Zhou, Xiaowen Zhou, Zining Yang, Carmen Cordoba-Jabonero, Yufei Wang, Zhongwei Huang, Pengbo Da, Qiju Luo, Zhijuan Zhang, Jinsen Shi, Jianrong Bi, Hocine Alikhodja
Summary: This study investigated the long-range transport and effects of North African and Middle Eastern dust in East Asia using lidar observations and model simulations. The results showed that the dust originated from multiple sources and had a long transport time. The vertical distribution of the dust was found to be crucial for assessing its impacts.
ATMOSPHERIC ENVIRONMENT
(2024)