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
Engineering, Environmental
Yuchen Wang, Rongbiao Tong, Jian Zhen Yu
Summary: Nitrooxy organosulfates derived from terpenes (NOSTP) are important products formed between anthropogenic pollution and natural emissions, but quantification, formation, and transformation in atmospheric aerosols are hindered by the lack of standards. This work developed synthesis routes for eight NOSTP compounds and identified six synthesized NOSTP in ambient aerosol samples for the first time. Availability of authentic standards allowed observation of previously unrecognized transformation pathways in NOSTP formation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Chuanen Guo, Luyao Xu, Chenxi Zhang
Summary: This study investigates the heterogeneous OH oxidation mechanism of 3-methyltetraol sulfate (3-MTS), a common organic sulfate in atmospheric particles. The results show that 3-MTS easily undergoes abstraction reaction with OH radicals, generating low-volatility species that are important components of secondary organic aerosol. The study provides insights into the reactivity of other organosulfates in atmospheric aerosols and the conversion of sulfur between its organic and inorganic forms during oxidation.
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
Environmental Sciences
Yao Wang, Yue Zhao, Yuchen Wang, Jian-Zhen Yu, Jingyuan Shao, Ping Liu, Wenfei Zhu, Zhen Cheng, Ziyue Li, Naiqiang Yan, Huayun Xiao
Summary: Organosulfates (OSs) are important tracers for secondary organic aerosols (SOAs) and were comprehensively characterized in ambient fine particulate matter (PM2.5) samples collected in Shanghai in 2015-2016 and 2018-2019. The study found that while the concentration of organic aerosols (OAs) decreased in 2018-2019 compared to 2015-2016, the concentrations of quantified OSs remained similar, suggesting an increased contribution of SOAs to OAs in 2018-2019.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Review
Engineering, Environmental
Wulve Fan, Ting Chen, Zhiliang Zhu, Hua Zhang, Yanling Qiu, Daqiang Yin
Summary: Secondary organic aerosols (SOA) are an important component of fine particulate matter, with significant impacts on human health, air quality, and climate change. Organosulfates (OSs) and organic nitrates (ON) are key contributors to SOA formation, and their formation mechanisms are complex. Further research is needed to comprehensively understand the formation of SOA, particularly the contributions of OSs and ON.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Linlin Liang, Guenter Engling, Wanyun Xu, Qianli Ma, Weili Lin, Xuyan Liu, Chang Liu, Gen Zhang
Summary: Laboratory experiments suggest acid-catalyzed aqueous-phase production can promote the formation of isoprene SOA, i.e., 2-methyltetrols. In this study, ambient observations and chemical measurements were used to investigate the importance of environmental factors in the formation of isoprene epoxydiols (IEPDX) SOA under atmospheric humidity conditions. The results show that photochemical processes dominate the formation of 2-methyltetrols in humid environments, and aerosol acidity has a limited influence on their formation. Additionally, high liquid water content reduces aerosol droplet acidity, thereby diminishing the enhancement of SOA formation.
Article
Environmental Sciences
Naihua Chen, Jianyong You, Jie Huang, Yuxiang Yang, Haoran Lin, Xin Qi, Xiaoxiao Chen, Yushan Yang, Baoye Hu
Summary: A four-season observation of PM2.5-bound SOA tracers was conducted on a coastal island in southeastern China to better understand the formation and characteristics of SOA in coastal areas. The study found that the total concentrations of SOA tracers were higher in the fall and summer compared to spring and winter. The highest concentration among the tracers was observed for the tracer of biomass burning, followed by tracers from isoprene, alpha/beta pinene, beta-caryophyllene, and toluene.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Xinyao Feng, Yingze Tian, Qianqian Xue, Danlin Song, Fengxia Huang, Yinchang Feng
Summary: The study highlights the significant impact of urbanization on air quality, with PM2.5 sources and composition varying over time and in response to policies, with traffic emissions becoming a major source. Additionally, there are spatial differences in air quality and pollution sources in Chengdu.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Environmental Sciences
Yan Qin Ren, Jie Wei, Yuan Yuan Ji, Zhen Hai Wu, Fang Bi, Rui Gao, Xue Zhong Wang, Hong Li
Summary: The study shows that primary emission and secondary formation have significant impacts on the organic compositions of fine aerosols in summer Beijing. Coal combustion is an important source of OC during polluted period, while biomass burning is the main contributor during clean period. The study also highlights the importance of atmospheric oxidants and particle acidity in the formation of secondary organic carbon during high pollution periods in Beijing.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Yange Deng, Hiroaki Fujinari, Hikari Yai, Kojiro Shimada, Yuzo Miyazaki, Eri Tachibana, Dhananjay K. Deshmukh, Kimitaka Kawamura, Tomoki Nakayama, Shiori Tatsuta, Mingfu Cai, Hanbing Xu, Fei Li, Haobo Tan, Sho Ohata, Yutaka Kondo, Akinori Takami, Shiro Hatakeyama, Michihiro Mochida
Summary: In this study, offline analysis of atmospheric aerosol hygroscopicity coupled to composition analysis was conducted and compared to online analysis. The results showed that offline analysis is a suitable method for characterizing aerosol hygroscopicity, especially for organic fractions.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Environmental
Jianzhong Xu, Anusha Priyadarshani Silva Hettiyadura, Yanmei Liu, Xinghua Zhang, Shichang Kang, Alexander Laskin
Summary: This study investigates the regional differences in brown carbon (BrC) properties in the southern and northern regions of the Tibetan Plateau through molecular-level analysis of fine particulate matter samples. The results highlight the chemical differences in BrC composition between the two regions, providing insights for predictive understanding of aerosol radiative forcing in the Tibetan Plateau area.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2022)
Article
Environmental Sciences
Ling Mu, Xin Jiang, Yangyong Li, Xuemei Li, Xiaofan Li, Tian Liu, Ziye Liu, Chuanyang Feng
Summary: In this study, the distribution characteristics of secondary organic aerosols (SOAs) were investigated by measuring 13 SOA tracers in PM2.5 in Jinzhong, Shanxi. Isoprene SOA tracer had the highest annual average concentration, accounting for 57.8% of all tracers, followed by 13-caryophyllene, α/β-pinene, and toluene SOA tracers. The concentrations of isoprene and α/β-pinene SOA tracers were higher in summer and autumn, while the concentration of 13-caryophyllene SOA tracer was higher in autumn and winter. According to tracer yield estimation results, plant-derived volatile organic compounds were the main source of SOAs in PM2.5 in Jinzhong, and isoprene contributed the most in spring and summer.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Dongmei Zhang, Jie Wang, Huan Chen, Chu Gong, Dong Xing, Ziao Liu, Ivan Gladich, Joseph S. Francisco, Xinxing Zhang
Summary: This study reveals that atmospheric fine particulate matter (PM) can generate a significant amount of hydroxyl radicals (OH) at the air-water interface. The researchers observed the oxidation of amphiphilic lipids and isoprene by water-soluble PM2.5 under ultraviolet A irradiation, with an estimated OH generation rate of 1.5 x 1016 molecule center dot s-1 center dot m-2. Atomistic molecular dynamics simulations support the unexpected affinity of isoprene for the air-water interface. This work suggests a potential new heterogeneous OH generation channel in the atmosphere.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
Kanan Patel, Mark Joseph Campmier, Sahil Bhandari, Nisar Baig, Shahzad Gani, Gazala Habib, Joshua S. Apte, Lea Hildebrandt Ruiz
Summary: The study assessed the impact of the 2020 COVID-19 lockdown on ambient air quality in Delhi, finding that while primary pollutants decreased during the lockdown, changes in NR-PM1 were minimal. Despite significant reductions in some primary pollutants, secondary aerosol continued to dominate the air quality in Delhi.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Brian J. Butterworth, Ankur R. Desai, Stefan Metzger, Philip A. Townsend, Mark D. Schwartz, Grant W. Petty, Matthias Mauder, Hannes Vogelmann, Christian G. Andresen, Travis J. Augustine, Timothy H. Bertram, William O. J. Brown, Michael Buban, Patricia Cleary, David J. Durden, Christopher R. Florian, Trevor J. Iglinski, Eric L. Kruger, Kathleen Lantz, Temple R. Lee, Tilden P. Meyers, James K. Mineau, Erik R. Olson, Steven P. Oncley, Sreenath Paleri, Rosalyn A. Pertzborn, Claire Pettersen, David M. Plummer, Laura D. Riihimaki, Eliceo Ruiz Guzman, Joseph Sedlar, Elizabeth N. Smith, Johannes Speidel, Paul C. Stoy, Matthias Suehring, Jonathan E. Thom, David D. Turner, Michael P. Vermeuel, Timothy J. Wagner, Zhien Wang, Luise Wanner, Loren D. White, James M. Wilczak, Daniel B. Wright, Ting Zheng
Summary: The CHEESEHEAD19 project aims to study how the atmospheric boundary layer responds to spatial heterogeneity in surface energy fluxes, by deploying an extensive array of ground, tower, profiling, and airborne instruments to improve model-data comparison and integration.
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
(2021)
Article
Geosciences, Multidisciplinary
Michael P. Vermeuel, Patricia A. Cleary, Ankur R. Desai, Timothy H. Bertram
Summary: The study reveals a significant contribution of nonstomatal pathways in canopy to the dry deposition of O-3, which is not correctly captured in current models. Stomatal uptake and estimated absorption only explain a small portion of O-3 loss.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
Kyle J. Angle, Daniel R. Crocker, Rebecca M. C. Simpson, Kathryn J. Mayer, Lauren A. Garofalo, Alexia N. Moore, Stephanie L. Mora Garcia, Victor W. Or, Sudarshan Srinivasan, Mahum Farhan, Jon S. Sauer, Christopher Lee, Matson A. Pothier, Delphine K. Farmer, Todd R. Martz, Timothy H. Bertram, Christopher D. Cappa, Kimberly A. Prather, Vicki H. Grassian
Summary: This research demonstrates that freshly emitted sea spray aerosols have significantly lower pH values than seawater, with smaller aerosol particles having even lower pH values. Aerosol acidity is found to be correlated with dissolved carbon dioxide but not with marine biology within seawater. The study discusses the mechanisms and implications of this acidity on atmospheric chemistry.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Engineering, Environmental
Austin G. Doak, Megan B. Christiansen, Hariprasad D. Alwe, Timothy H. Bertram, Gregory Carmichael, Patricia Cleary, Alan C. Czarnetzki, Angela F. Dickens, Mark Janssen, Donna Kenski, Dylan B. Millet, Gordon A. Novak, Bradley R. Pierce, Elizabeth A. Stone, Russell W. Long, Michael P. Vermeuel, Timothy J. Wagner, Lukas Valin, Charles O. Stanier
Summary: The Lake Michigan Ozone Study 2017 (LMOS 2017) involved two well-instrumented coastal ground sites on the western shore of Lake Michigan, which encountered elevated ozone concentrations during the study period. Local source impacts were found to represent less than about 15% of typical concentrations measured, and implications for model-observation comparison and future field campaigns were discussed.
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
(2021)
Article
Meteorology & Atmospheric Sciences
Charles O. Stanier, R. Bradley Pierce, Maryam Abdi-Oskouei, Zachariah E. Adelman, Jay Al-Saadi, Hariprasad D. Alwe, Timothy H. Bertram, Gregory R. Carmichael, Megan B. Christiansen, Patricia A. Cleary, Alan C. Czarnetzki, Angela F. Dickens, Marta A. Fuoco, Dagen D. Hughes, Joseph P. Hupy, Scott J. Janz, Laura M. Judd, Donna Kenski, Matthew G. Kowalewski, Russell W. Long, Dylan B. Millet, Gordon Novak, Behrooz Roozitalab, Stephanie L. Shaw, Elizabeth A. Stone, James Szykman, Lukas Valin, Michael Vermeuel, Timothy J. Wagner, Andrew R. Whitehill, David J. Williams
Summary: The Lake Michigan Ozone Study 2017 (LMOS 2017) was a collaborative multiagency field study focusing on ozone chemistry, meteorology, and air quality observations in the southern Lake Michigan area. The study aimed to improve air quality modeling of the region and observed local photochemical ozone production, NO2 emissions, and meteorological characteristics of lake breezes. Measurements of various air pollutants and composition were conducted, providing insights for state and federal air quality management.
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
(2021)
Article
Environmental Sciences
Patricia A. Cleary, Angela Dickens, Molly McIlquham, Mario Sanchez, Kyle Geib, Caitlin Hedberg, Joe Hupy, Matt W. Watson, Marta Fuoco, Erik R. Olson, R. Bradley Pierce, Charles Stanier, Russell Long, Lukas Valin, Stephen Conley, Mackenzie Smith
Summary: Daytime onshore lake breezes play a critical role in controlling ozone abundance at coastal sites around Lake Michigan, with different types of lake breezes resulting in varying ozone concentration gradients.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Engineering, Environmental
Emily B. Franklin, Michael R. Alves, Alexia N. Moore, Delaney B. Kilgour, Gordon A. Novak, Kathryn Mayer, Jonathan S. Sauer, Robert J. Weber, Duyen Dang, Margaux Winter, Christopher Lee, Christopher D. Cappa, Timothy H. Bertram, Kimberly A. Prather, Vicki H. Grassian, Allen H. Goldstein
Summary: Researchers found that benzothiazoles in coastal waters are primarily from anthropogenic sources, and the oxidation of gas-phase benzothiazole can lead to the formation of secondary aerosols in the atmosphere, potentially contributing to the formation of secondary marine aerosols in coastal regions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Biochemical Research Methods
Steven J. Kregel, Blaise J. Thompson, Gilbert M. Nathanson, Timothy H. Bertram
Summary: The Wisconsin Oscillator is a small, inexpensive, low-power circuit designed to power ion-guiding devices, producing high-frequency antiphase RF waveforms. It is user-friendly and provides significant advantages in terms of cost and efficiency.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2021)
Article
Multidisciplinary Sciences
Gordon A. Novak, Charles H. Fite, Christopher D. Holmes, Patrick R. Veres, J. Andrew Neuman, Ian Faloona, Joel A. Thornton, Glenn M. Wolfe, Michael P. Vermeuel, Christopher M. Jernigan, Jeff Peischl, Thomas B. Ryerson, Chelsea R. Thompson, Ilann Bourgeois, Carsten Warneke, Georgios Gkatzelis, Mathew M. Coggon, Kanako Sekimoto, T. Paul Bui, Jonathan Dean-Day, Glenn S. Diskin, Joshua P. DiGangi, John B. Nowak, Richard H. Moore, Elizabeth B. Wiggins, Edward L. Winstead, Claire Robinson, K. Lee Thornhill, Kevin J. Sanchez, Samuel R. Hall, Kirk Ullmann, Maximilian Dollner, Bernadett Weinzierl, Donald R. Blake, Timothy H. Bertram
Summary: This study reveals that the oxidation of DMS in the marine atmosphere is reduced by cloud loss, affecting the generation of sulfur aerosols and altering the dynamics of marine aerosols, ultimately impacting cloud formation, radiative forcing, and climate.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Meteorology & Atmospheric Sciences
Timothy J. Wagner, Alan C. Czarnetzki, Megan Christiansen, R. Bradley Pierce, Charles O. Stanier, Angela F. Dickens, Edwin W. Eloranta
Summary: Ground-based profilers were used to study lake breezes near Lake Michigan. The wind direction of the lake breeze was consistently southeasterly at both sites. Surface relative humidity increased with the arrival of the lake breeze, while the absolute moisture content stayed the same or decreased. The depth of the lake breeze penetration depended on the stability of the local environment and the strength of preexisting flow.
JOURNAL OF THE ATMOSPHERIC SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Dandan Wei, Hariprasad D. Alwe, Dylan B. Millet, Brandon Bottorff, Michelle Lew, Philip S. Stevens, Joshua D. Shutter, Joshua L. Cox, Frank N. Keutsch, Qianwen Shi, Sarah C. Kavassalis, Jennifer G. Murphy, Krystal T. Vasquez, Hannah M. Allen, Eric Praske, John D. Crounse, Paul O. Wennberg, Paul B. Shepson, Alexander A. T. Bui, Henry W. Wallace, Robert J. Griffin, Nathaniel W. May, Megan Connor, Jonathan H. Slade, Kerri A. Pratt, Ezra C. Wood, Mathew Rollings, Benjamin L. Deming, Daniel C. Anderson, Allison L. Steiner
Summary: The FORCAsT model has been upgraded to version 2.0, incorporating changes in operator splitting, vertical mixing, and dry deposition to improve estimation of isoprene oxidation products and iSOA formation. The inclusion of isoprene in the aerosol module in FORCAsT 2.0 leads to a 7% mass yield of iSOA, with tetrafunctionals and IEPOX identified as the most important iSOA precursors.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2021)
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)