Article
Environmental Sciences
Vahid Jalali Farahani, Ehsan Soleimanian, Milad Pirhadi, Constantinos Sioutas
Summary: The study investigated long-term trends in redox-active metals and trace elements in central Los Angeles from 2005 to 2018, revealing a general decline in metal concentrations largely influenced by sources such as mineral dust and re-suspended road dust.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Farzan Oroumiyeh, Michael Jerrett, Irish Del Rosario, Jonah Lipsitt, Jonathan Liu, Suzanne E. Paulson, Beate Ritz, James J. Schauer, Martin M. Shafer, Jiaqi Shen, Scott Weichenthal, Sudipto Banerjee, Yifang Zhu
Summary: The study revealed that elements in particulate matter are influenced by traffic emissions, with significant spatial variations across different locations indicating diverse emission sources. Traffic emissions were found to be the main contributor to PM2.5, while mineral dust was the dominant source of PM2.5-10.
ENVIRONMENTAL POLLUTION
(2022)
Article
Green & Sustainable Science & Technology
Mauricio A. Correa, Santiago A. Franco, Luisa M. Gomez, David Aguiar, Henry A. Colorado
Summary: This research investigated the current methods of characterization of ions and metals in particulate matter pollutants from different emission sources. The Proknow-C methodology was used, with a selection of scientific and review articles. The study examined various methodologies used to quantify ions and metals in PM, focusing on PM10 and PM2.5. The research explored the types of filters, equipment, and characterization techniques. Results showed that Proknow-C is a reliable method for analyzing PM pollution research, providing insight into metals and ions types, characterization technologies, current situations, and trends. Sulfate, nitrate, and ammonium ions accounted for 70-80% of the PM concentrations. Main metals detected included chromium, nickel, lead, cadmium, iron, manganese, coper, and zinc. The predominant detection method was inductively coupled plasma mass spectrometry. Geographic information systems were identified as a valuable tool for integrating spatial data with PM and air pollution analysis, aiding in faster diagnosis and solution implementation.
Article
Environmental Sciences
Ajith Pattammattel, Valerie J. Leppert, Paul Aronstein, Matthew Robinson, Amirhosein Mousavi, Constantinos Sioutas, Henry Jay Forman, Peggy A. O'Day
Summary: This study investigated the speciation, oxidation states, and relative abundance of iron (Fe) phases in PM2.5 samples from urban Los Angeles. It found that ferrihydrite was the most prevalent component, originating mainly from anthropogenic activities such as vehicle abrasion and engine emissions. The heterogeneous mixtures of iron species have a high potential for electron transfer reactions and may impact environmental and health outcomes.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Evgenia Ilyinskaya, Emily Mason, Penny E. Wieser, Lacey Holland, Emma J. Liu, Tamsin A. Mather, Marie Edmonds, Rachel C. W. Whitty, Tamar Elias, Patricia A. Nadeau, David Schneider, James B. McQuaid, Sarah E. Allen, Jason Harvey, Clive Oppenheimer, Christoph Kern, David Damby
Summary: Through extensive sampling of Kilauea's 2018 eruption plume, it was found that volatile metal pollutants in basaltic volcanic plumes can be deposited up to 100 times faster than refractory species, potentially producing disproportionate impacts at proximal locations. The relationship between volatility and solubility was identified as an important control on the atmospheric behavior of elements, suggesting that assessment of hazards from volcanic emissions should consider heterogeneous plume depletion of metal pollutants.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
Article
Environmental Sciences
Jesus Eulises Corona Sanchez, Ma del Carmen Angeles Gonzalez Chavez, Rogelio Carrillo Gonzalez, Kirk Scheckel, Daniel Tapia Maruri, Jose L. Garcia Cue
Summary: This study investigated the exposure to airborne metal(loids) in a community near mine tailings, finding high concentrations of bioaccessible metal(loids). The quasi-total metal(loid) concentrations were highest for As, followed by Zn, Fe, Pb, Cu, Mn, and Cd.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Yunliang Zhao, Daniel S. Tkacik, Andrew A. May, Neil M. Donahue, Allen L. Robinson
Summary: By analyzing ambient and emissions data, it has been found that mobile sources make a significant contribution to the formation of secondary organic aerosol (SOA) in the Los Angeles region from 2009 to 2019. Despite the improvements in air quality, the reduction in organic aerosol (OA) concentrations has not been as significant as primary pollutants. It is suggested that reducing emissions from mobile sources will lead to further improvements in atmospheric SOA and PM2.5 mass in the Los Angeles region.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Neele van Laaten, Wolf von Tumpling, Dirk Merten, Rasmus Bro, Thorsten Schaefer, Michael Pirrung
Summary: Elevated levels of particulate matter in urban atmospheres pose a major environmental challenge. Biomonitoring methods, such as analyzing spider webs, can help to identify sources of PM, including brake wear, abrasion of tram/train tracks, and geogenic particles. Statistical analyses reveal the significant contributions of different sources and emphasize the non-exhaust particles associated with road traffic.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Multidisciplinary
Jingjing Wang, Md Mahmudun Nabi, Mahdi Erfani, Erfan Goharian, Mohammed Baalousha
Summary: Urban rain and runoff contain various types of anthropogenic nanomaterials, primarily derived from traffic emissions. These anthropogenic nanomaterials may lead to exposure in the atmosphere and potential risks to aquatic organisms.
ENVIRONMENTAL SCIENCE-NANO
(2022)
Article
Engineering, Environmental
Vahid Jalali Farahani, Abdulmalik Altuwayjiri, Sina Taghvaee, Constantinos Sioutas
Summary: This study estimated the emission factors of PM10 and its chemical constituents from various sources on two freeways in the Los Angeles basin. The results showed that non-tailpipe emissions, particularly from heavy-duty vehicles on the I-710 freeway, had higher PM10 and metal element emission factors compared to the I-110 freeway. The study also found that road dust resuspension contributed twice as much non-tailpipe PM10 as tire and brake wear.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yushan Su, Uwayemi Sofowote, Anthony Munoz, Michael Noble, Chris Charron, Aaron Todd, Valbona Celo, Ewa Dabek-Zlotorzynska, Alla Kryukova, Teresa Switzer
Summary: The study examined the impact of potential mining activities on air quality in Ontario's Far North. Analysis of monitoring data on particulate matter and trace elements showed minimal influence of primary emissions in the study area, with air quality meeting Ontario's environmental standards.
APPLIED SCIENCES-BASEL
(2021)
Article
Energy & Fuels
Xiangzheng Cui, Yongchun Zhao, Yushan Ji, Jingchao Liu, Tian Gao, Gangzhong Yang, Yi Wang, Rihong Xiao, Xing Chuai, Junying Zhang
Summary: The study examines the effect of heterogeneous agglomeration technology on the migration and emission of three trace elements (arsenic, selenium, and lead) in the tail flue gas of a domestic coal-fired power plant. The results demonstrate the efficient attachment of gaseous harmful trace elements to particulate matter, leading to significant reductions in their concentrations.
Article
Environmental Sciences
Ramin Tohidi, Abdulmalik Altuwayjiri, Constantinos Sioutas
Summary: Source apportionment analysis was conducted to determine the sources of ambient coarse particles in central Los Angeles during different seasons. The study found that vehicular emissions, secondary organic carbon, and re-suspended dust were the primary sources of organic carbon in coarse PM. The results also showed that the contribution of secondary organic carbon to less volatile organic aerosols was higher under high relative humidity. The study highlights the challenges in curtailing the sources of coarse PM-bound organic carbon and the necessity of effective emission control regulations.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Marine
Dina P. P. Starodymova, Marina D. D. Kravchishina, Anastasia I. I. Kochenkova, Alexey S. S. Lokhov, Natalia M. M. Makhnovich, Svetlana V. V. Vazyulya
Summary: The increasing influence of Atlantic inflows in the Arctic Ocean has impacted the biogeochemical cycles of major and trace elements. The warm and salty Atlantic water affects particle transport, sink, and marine ecosystems. This study discusses the elemental composition of suspended particulate matter collected in the Barents Sea and northern Norwegian Sea, showing the spatial variability of biological processes and input of sedimentary matter. The distribution of elements in the particulate matter and their enrichment in the benthic nepheloid layer are also studied.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Environmental Sciences
Vineet Yadav, Kristal Verhulst, Riley Duren, Andrew Thorpe, Jooil Kim, Ralph Keeling, Ray Weiss, Dan Cusworth, Marikate Mountain, Charles Miller, James Whetstone
Summary: The Los Angeles basin accounted for 20% of California's methane emissions in 2016, emphasizing the need to reduce these emissions and meet greenhouse gas reduction targets. However, mitigation efforts face challenges due to the presence of diverse methane sources such as oil and gas production fields, refineries, landfills, wastewater treatment facilities, and natural gas infrastructure. This study analyzes the temporal variability in surface concentrations from February 2015 to April 2022 and detects a declining trend in methane emissions. Through inverse modeling, the study quantifies a 15 Gg (approximately 7%) reduction in methane emissions in the LA basin over a five-year period from January 2015 to May 2020.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Review
Environmental Sciences
Kristina Shkirkova, Krista Lamorie-Foote, Michelle Connor, Arati Patel, Giuseppe Barisano, Hans Baertsch, Qinghai Liu, Todd E. Morgan, Constantinos Sioutas, William J. Mack
JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH-PART B-CRITICAL REVIEWS
(2020)
Article
Immunology
Hani Harb, Emmanuel Stephen-Victor, Elena Crestani, Mehdi Benamar, Amir Massoud, Ye Cui, Louis-Marie Charbonnier, Sena Arbag, Safa Baris, Amparito Cunnigham, Juan Manuel Leyva-Castillo, Raif S. Geha, Amirhosein J. Mousavi, Boris Guennewig, Klaus Schmitz-Abe, Constantinos Sioutas, Wanda Phipatanakul, Talal A. Chatila
Article
Environmental Sciences
Milad Pirhadi, Amirhosein Mousavi, Constantinos Sioutas
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Ajith Pattammattel, Valerie J. Leppert, Paul Aronstein, Matthew Robinson, Amirhosein Mousavi, Constantinos Sioutas, Henry Jay Forman, Peggy A. O'Day
Summary: This study investigated the speciation, oxidation states, and relative abundance of iron (Fe) phases in PM2.5 samples from urban Los Angeles. It found that ferrihydrite was the most prevalent component, originating mainly from anthropogenic activities such as vehicle abrasion and engine emissions. The heterogeneous mixtures of iron species have a high potential for electron transfer reactions and may impact environmental and health outcomes.
ATMOSPHERIC ENVIRONMENT
(2021)
Correction
Immunology
Hani Harb, Emmanuel Stephen-Victor, Elena Crestani, Mehdi Benamar, Amir Massoud, Ye Cui, Louis-Marie Charbonnier, Sena Arbag, Safa Baris, Amparito Cunnigham, Juan Manuel Leyva-Castillo, Raif S. Geha, Amirhosein J. Mousavi, Boris Guennewig, Klaus Schmitz-Abe, Constantinos Sioutas, Wanda Phipatanakul, Talal A. Chatila
Summary: The paper has been amended and the updated version can be accessed via a link at the top of the paper.
Article
Environmental Sciences
Kyung In Baek, Yi Qian, Chih-Chiang Chang, Ryan O'Donnell, Ehsan Soleimanian, Constantinos Sioutas, Rongsong Li, Tzung K. Hsiai
Article
Environmental Sciences
Abdulmalik Altuwayjiri, Ehsan Soleimanian, Silvia Moroni, Paolo Palomba, Alessandro Borgini, Cinzia De Marco, Ario A. Ruprecht, Constantinos Sioutas
Summary: This study aimed to characterize changes in components and toxicological properties of PM2.5 during the COVID-19 lockdown in Milan, Italy. The results showed that concentrations of certain components from tailpipe emissions and road dust decreased during the lockdown period compared to 2019, while concentrations of ambient PM2.5 and black carbon remained relatively stable.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Vahid Jalali Farahani, Abdulmalik Altuwayjiri, Sina Taghvaee, Constantinos Sioutas
Summary: This study estimated the emission factors of PM10 and its chemical constituents from various sources on two freeways in the Los Angeles basin. The results showed that non-tailpipe emissions, particularly from heavy-duty vehicles on the I-710 freeway, had higher PM10 and metal element emission factors compared to the I-110 freeway. The study also found that road dust resuspension contributed twice as much non-tailpipe PM10 as tire and brake wear.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Nanqi Bao, Jake I. Gold, Jonathan K. Sheavly, James J. Schauer, Victor M. Zavala, Van Lehn, Manos Mavrikakis, Nicholas L. Abbott
Summary: This study reveals that liquid crystals can undergo ordering transitions in response to surface reactions triggered by metal oxide substrates, offering a new class of substrates for amplifying atomic-scale transformations. The experiments and computational modeling demonstrate that the reaction between SO2 and H2O on anatase (101) substrates displaces the liquid crystal from the surface, resulting in an orientation transition. Moreover, the liquid crystal shows a high selectivity to SO2, making it a promising material for sensing atmospheric chemical species.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Nanqi Bao, Shengli Jiang, Alexander Smith, James J. Schauer, Manos Mavrikakis, Reid C. Van Lehn, Victor M. Zavala, Nicholas L. Abbott
Summary: In this study, we show how analysis of the optical responses of liquid crystal films to targeted gases using a machine learning methodology can improve gas sensing and provide insights into the underlying physical processes. We demonstrate that a three-dimensional convolutional neural network can extract feature information from the color patterns of the liquid crystals to detect and quantify the presence of different gases in mixtures. Our findings suggest that the detection of O3 is driven by the transition time of brightness changes in the liquid crystals, while the detection of Cl2 is driven by late-developing color fluctuations. This research has implications for the design of portable liquid crystal monitoring devices.
Article
Environmental Sciences
Mohammad Aldekheel, Abdulmalik Altuwayjiri, Ramin Tohidi, Vahid Jalali Farahani, Constantinos Sioutas
Summary: This study investigated the effectiveness of air purifiers and ventilation systems in reducing indoor air pollution in various classrooms. The results showed that the ventilation systems adequately diluted indoor CO2 concentrations, and the in-line filters and air purifiers efficiently captured particles. This study emphasizes the importance of air purifiers and ventilation systems in reducing indoor air pollution.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Environmental Sciences
Mohammad Aldekheel, Vahid Jalali Farahani, Constantinos Sioutas
Summary: The lifetime cancer risk characterization of ambient PM-bound carcinogenic metals and PAHs was examined in three cities with similar Mediterranean climates but different emission sources and air quality regulations. The study found that Milan had the highest risk, while Los Angeles had the lowest risk. This highlights the importance of local air quality measures in improving air quality and reducing cancer risks.
Article
Environmental Sciences
Christina L. Norris, Ross Edwards, Chinmay Ghoroi, James J. Schauer, Marilyn Black, Michael H. Bergin
Summary: Indian cities have poor air quality, and there is limited research on the indoor sources of volatile organic compounds (VOCs). A pilot study in Ahmedabad and Gandhinagar, Gujarat, quantified hundreds of VOCs inside and outside 26 homes. The study found seasonal variations in VOC concentrations and sources, emphasizing the need for a better understanding of factors contributing to indoor pollution to reduce health risks.
Article
Environmental Sciences
Vahid Jalali Farahani, Abdulmalik Altuwayjiri, Milad Pirhadi, Vishal Verma, Ario Alberto Ruprecht, Evangelia Diapouli, Konstantinos Eleftheriadis, Constantinos Sioutas
Summary: This study examines the impact of urban emission sources on the chemical composition and oxidative potential of ambient particulate matter (PM). The results show that PM samples from different emission sources have distinctive characteristics, with PM from biomass burning and secondary organic aerosols having the highest oxidative potential. In contrast, areas with high metal emissions, such as dust storms, refineries, and industrial areas, exhibit low oxidative potential.
ENVIRONMENTAL SCIENCE-ATMOSPHERES
(2022)
Article
Environmental Sciences
Ehsan Soleimanian, Sina Taghvaee, Constantinos Sioutas
ATMOSPHERIC ENVIRONMENT
(2020)
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)
