Article
Environmental Sciences
Yunyan Jiang, Jinyuan Xin, Ying Wang, Guiqian Tang, Yuxin Zhao, Danjie Jia, Dandan Zhao, Meng Wang, Lindong Dai, Lili Wang, Tianxue Wen, Fangkun Wu
Summary: The study revealed significant impacts of synoptic and regional circulations on the PBL structure and air quality, showing that synoptic circulations led to different PBL structures and pollution patterns, while regional breezes played a role in pushing pollution zones to specific locations.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Meteorology & Atmospheric Sciences
Yan Yan, Xuhui Cai, Yucong Miao, Mingyuan Yu
Summary: This study investigated the variations of PM2.5 pollution in the Huaihe River Basin and its associated meteorological processes. The results showed that the PM2.5 concentration in the Huaihe River Basin is highest in winter and lowest in summer, influenced by both the annual cycle of emission rate and the variations of planetary boundary layer (PBL) structure. Wintertime PM2.5 pollution episodes showed synchronous variation in multiple cities in this region, characterized by weak winds, humid conditions, and strong thermal stratifications within the PBL. Two synoptic patterns associated with winter heavy regional pollution were identified.
ATMOSPHERIC RESEARCH
(2022)
Article
Meteorology & Atmospheric Sciences
Xiaolan Li, Yucong Miao, Yanjun Ma, Yangfeng Wang, Yunhai Zhang
Summary: The research found that during the pollution formation period, a strong elevated thermal inversion layer was observed over Shenyang, induced by the large-scale synoptic pattern, which suppressed the boundary layer growth and vertical dispersion of aerosols. Furthermore, the blocking effect of mountains to the east of Shenyang exacerbated the pollution, especially when northwesterly/westerly flows prevailed in shallow boundary layers. Numerical sensitive experiments estimated that around one third of the PM2.5 concentration in Shenyang during January 1-4 was relevant to the terrain effect.
ATMOSPHERIC RESEARCH
(2021)
Article
Environmental Sciences
Qi Yuan, Bing Qi, Deyun Hu, Junjiao Wang, Jian Zhang, Huanqiang Yang, Shanshan Zhang, Lei Liu, Liang Xu, Weijun Li
Summary: Air pollution has become a significant environmental issue in the megacities of eastern China. Controlling air pollution remains challenging, but the COVID-19 lockdown provided valuable insights into pollutant reductions. During the lockdown in Hangzhou, PM2.5, NOx, and CO concentrations decreased, highlighting the potential for future control and forecasting efforts in similar megacities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Xueliang Deng, Jian Chen, Rui Dai, Zhenfang Zhai, Dongyan He, Liang Zhao, Xiaolong Jin, Jiping Zhang
Summary: The characteristics of the planetary boundary layer (PBL) and its association with air pollution were analyzed in Hefei, China, using reanalysis data, weather observations, and air pollutant measurements from 2016 to 2021. Ground meteorological conditions, such as weak wind speed, northwest wind anomalies, low temperature, and high relative humidity, directly influenced air pollution at the near-surface level. Short-range air masses from the north and northwest played a role in pollutant transport within the PBL, and high PM2.5 concentrations showed a strong dependence on PBL stratification. The stable stratification in the PBL was influenced by ground factors and synoptic configurations, contributing to the generation of air pollution.
Article
Engineering, Environmental
Wenwen Xia, Yong Wang, Siyu Chen, Jianping Huang, Bin Wang, Guang J. Zhang, Yue Zhang, Xiaohong Liu, Jianmin Ma, Peng Gong, Yiquan Jiang, Mingxuan Wu, Jinkai Xue, Linyi Wei, Tinghan Zhang
Summary: The study found that urban anthropogenic dust emissions have a significant impact on urban air pollution globally, especially exacerbating non-dust pollution in India and northern China. The estimated global total premature mortality due to anthropogenic dust is 0.8 million deaths per year, with more severe effects in populous regions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Mechanics
Liaquat Ali Lund, Ubaidullah Yashkun, Nehad Ali Shah
Summary: This research investigates the stable boundary layer problem in magnetohydrodynamics (MHD) and its application in heat transfer. The study shows that the skin friction coefficient increases in the positive direction of lambda as the volume fraction of copper increases. The effect of viscous dissipation on the temperature profile has a similar rising trend in the z-direction.
Article
Multidisciplinary Sciences
Sayed M. El Din, Adil Darvesh, Assad Ayub, Tanveer Sajid, Wasim Jamshed, Mohamed R. Eid, Syed M. Hussain, Manuel Sanchez-Chero, Sheda Mendez Ancca, Johana Milagritos Ramirez Cerna, Carmen Luisa Aquije Dapozzo
Summary: This study investigates the behavior of Carreau liquid in stagnation point flow with inclined magnetic effect, and utilizes the spectral relaxation method for numerical analysis. Various additional factors such as Nusselt number evaluation, passive control of nanoparticles, and thermophoresis are considered. The study is innovative in its exploration of the influence of oblique magnetic force and second order velocity slippage on Carreau nano liquid, and the use of the quadratic multiple regression model for heat transition rate evaluation.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
Aamir Ali, Tasmia Kanwal, Muhammad Awais, Zahir Shah, Poom Kumam, Phatiphat Thounthong
Summary: The study investigates the impacts of thermal radiations and non-uniform heat flux on magnetohydrodynamic hybrid nanofluid flow along a stretching cylinder. By using numerical methods, changes in velocity and temperature fields are analyzed. Results show that adding hybrid nanofluid particles decreases fluid velocity but increases temperature, while considering magnetic field and slip effects also leads to a decrease in fluid velocity.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Wenyu Wei, Yuanyuan Fang, Yuntao Zhou
Summary: The study found that regional O-3 pollution events (lasting more than 7 days) occur more frequently and have a co-occurrence frequency of over 50% with air stagnation. Additionally, the majority of regional O-3 pollution events coincide with changes in daily maximum temperature. The intensity of air stagnation is the primary driver of O-3 pollution event intensity.
ENVIRONMENTAL RESEARCH COMMUNICATIONS
(2021)
Article
Business
Alexandre Godzinski, Milena Suarez Castillo
Summary: Air pollution poses a significant threat to human health, with children and elderly individuals being the most vulnerable. Different air pollutants have varying impacts on health, such as ozone and sulfur dioxide increasing respiratory-related emergency admissions, carbon monoxide increasing emergency admissions for cardiovascular diseases, particulate matter increasing cardiovascular mortality rate, and sulfur dioxide increasing respiratory-related mortality rate. Ignoring interrelations between air pollutants could lead to partially false conclusions in analyses.
JOURNAL OF ENVIRONMENTAL ECONOMICS AND MANAGEMENT
(2021)
Article
Environmental Sciences
Anthony J. Sadar
Summary: Concerns about regional climate change and its impact on air quality, particularly surface-based temperature inversions, have raised public health concerns. In order to assist a large public health department in understanding the climatology and trend of temperature inversions, innovative criteria were developed based on datasets from Pittsburgh National Weather Service. The study reveals a generally declining frequency of inversions in the Pittsburgh area over a 30-year period, but also an increase in the strength and depth of evening inversions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Yucong Miao, Huizheng Che, Xiaoye Zhang, Shuhua Liu
Summary: The study revealed that heavy pollution events in Beijing and Shanghai are often concurrent due to unfavorable meteorological conditions. In Beijing, heavy pollution occurs on days with shallow afternoon Planetary Boundary Layer (PBL) and southerly/southwesterly prevailing winds, while in Shanghai it occurs on days with deep afternoon PBL and southwesterly warm advections within the PBL.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Changqing Lin, Jimmy C. H. Fung, Chao Ren, Edward Y. Y. Ng, Yuguo Li, Yueyang He, Kenneth K. M. Leung, Zhi Ning, Alexis K. H. Lau
Summary: This study uses a Light Detection and Ranging (LiDAR) system to measure wind profiles in an urban site in Hong Kong, and investigates the characteristics of ozone transport in the planetary boundary layer (PBL). The study finds that during ozone pollution episodes, there is increased regional transport from the Greater Bay Area (GBA), resulting in a predominant westerly component in the ozone flux. Additionally, clockwise veering winds are observed from the ground to the top of the PBL.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Madina Tursumbayeva, Aiymgul Kerimray, Ferhat Karaca, Didin Agustian Permadi
Summary: Air pollution is a severe problem in Almaty, with high PM2.5 concentrations in the winter months. The pollution is likely caused by emissions from coal combustion and poor atmospheric dispersion. The study shows that variations in the planetary boundary layer height (PBLH) have a significant effect on PM2.5 concentrations throughout the year.
AEROSOL AND AIR QUALITY RESEARCH
(2022)
Article
Multidisciplinary Sciences
Jun Liu, Denise L. Mauzerall, Qi Chen, Qiang Zhang, Yu Song, Wei Peng, Zbigniew Klimont, Xinghua Qiu, Shiqiu Zhang, Min Hu, Weili Lin, Kirk R. Smith, Tong Zhu
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2016)
Article
Multidisciplinary Sciences
T. Stavrakou, J. -F. Mueller, M. Bauwens, I. De Smedt, C. Lerot, M. Van Roozendael, P. -F. Coheur, C. Clerbaux, K. F. Boersma, R. van der A, Y. Song
SCIENTIFIC REPORTS
(2016)
Article
Meteorology & Atmospheric Sciences
Emily G. Yang, Eric A. Kort, Dien Wu, John C. Lin, Tomohiro Oda, Xinxin Ye, Thomas Lauvaux
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2020)
Article
Meteorology & Atmospheric Sciences
Xinxin Ye, Thomas Lauvaux, Eric A. Kort, Tomohiro Oda, Sha Feng, John C. Lin, Emily G. Yang, Dien Wu
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2020)
Article
Engineering, Environmental
Chelsea E. Stockwell, Megan M. Bela, Matthew M. Coggon, Georgios Gkatzelis, Elizabeth Wiggins, Emily M. Gargulinski, Taylor Shingler, Marta Fenn, Debora Griffin, Christopher D. Holmes, Xinxin Ye, Pablo E. Saide, Ilann Bourgeois, Jeff Peischl, Caroline C. Womack, Rebecca A. Washenfelder, Patrick R. Veres, J. Andrew Neuman, Jessica B. Gilman, Aaron Lamplugh, Rebecca H. Schwantes, Stuart A. McKeen, Armin Wisthaler, Felix Piel, Hongyu Guo, Pedro Campuzano-Jost, Jose L. Jimenez, Alan Fried, Thomas F. Hanisco, Lewis Gregory Huey, Anne Perring, Joseph M. Katich, Glenn S. Diskin, John B. Nowak, T. Paul Bui, Hannah S. Halliday, Joshua P. DiGangi, Gabriel Pereira, Eric P. James, Ravan Ahmadov, Chris A. McLinden, Amber J. Soja, Richard H. Moore, Johnathan W. Hair, Carsten Warneke
Summary: In this study, a novel method is proposed to estimate carbon emissions from wildfire plumes using a combination of lidar remote sensing and in situ measurements. The results show strong agreement with traditional methods and also demonstrate a strong correlation between carbon monoxide emissions and TROPOMI predictions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Pablo E. Saide, Laura H. Thapa, Xinxin Ye, Demetrios Pagonis, Pedro Campuzano-Jost, Hongyu Guo, Melinda L. Schuneman, Jose-Luis Jimenez, Richard Moore, Elizabeth Wiggins, Edward Winstead, Claire Robinson, Lee Thornhill, Kevin Sanchez, Nicholas L. Wagner, Adam Ahern, Joseph M. Katich, Anne E. Perring, Joshua P. Schwarz, Ming Lyu, Christopher D. Holmes, Johnathan W. Hair, Marta A. Fenn, Taylor J. Shingler
Summary: Using measurements from the FIREX-AQ campaign, it was found that the mass extinction efficiency (MEE) of smoke can change 2-3 times between fresh smoke and one-day-old smoke. This change is not only due to aerosol size, but also to changes in the real part of the aerosol refractive index and is positively correlated with organic aerosol oxidation state and aerosol size, and negatively correlated with smoke volatility. Further studies are needed to better understand and parameterize these relationships.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Meteorology & Atmospheric Sciences
Xinxin Ye, Pablo E. Saide, Johnathan Hair, Marta Fenn, Taylor Shingler, Amber Soja, Emily Gargulinski, Elizabeth Wiggins
Summary: Wildfire emissions contribute significant amounts of carbonaceous aerosols and trace gases to the atmosphere, and understanding the vertical allocation of these emissions is crucial for accurate modeling and forecasting of the environmental impacts of smoke.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Environmental Sciences
Xinxin Ye, Mina Deshler, Alexi Lyapustin, Yujie Wang, Shobha Kondragunta, Pablo Saide
Summary: Satellite remote sensing of aerosol optical depth (AOD) is essential for detecting, characterizing, and forecasting wildfire smoke. This study evaluated AOD retrievals during extreme wildfire events in September 2020 using three products: MAIAC C6.0, MAIAC C6.1, and VIIRS AOD. The results showed strong linear correlations between all three products and AERONET data, with MAIAC C6.1 and VIIRS exhibiting overall low bias. MAIAC C6.1 was found to have improved accuracy compared to C6.0, particularly in thick smoke conditions, while VIIRS AOD had comparable uncertainty with a slight positive bias. Averaging coincident retrievals from MAIAC C6.1 and VIIRS resulted in lower error and higher correlation, highlighting the benefits of blending these datasets. MAIAC C6.1 and VIIRS were further compared in terms of their retrieval strategy, with MAIAC C6.1 reporting more valid retrievals near fire sources and VIIRS providing better coverage over transported smoke near scattered clouds due to its higher spatial resolution and less strict cloud masking.
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
Forestry
Melinda T. T. Berman, Xinxin Ye, Laura H. H. Thapa, David A. A. Peterson, Edward J. J. Hyer, Amber J. J. Soja, Emily M. M. Gargulinski, Ivan Csiszar, Christopher C. C. Schmidt, Pablo E. E. Saide
Summary: In this study, a novel algorithm is developed to estimate hourly accumulated burned area using non-convex polygons containing VIIRS active-fire detections. Hourly time series are created by combining VIIRS estimates with FRP estimates from GOES-17 data. The results show that the hourly accumulation of burned area for multiple fires from 2019 to 2020 generally correlate strongly with airborne IR observations, exhibiting correlation coefficient values usually greater than 0.95 and errors <20%.
INTERNATIONAL JOURNAL OF WILDLAND FIRE
(2023)
Article
Environmental Sciences
Laura H. Thapa, Xinxin Ye, Johnathan W. Hair, Marta A. Fenn, Taylor Shingler, Shobha Kondragunta, Charles Ichoku, RoseAnne Dominguez, Luke Ellison, Amber J. Soja, Emily Gargulinski, Ravan Ahmadov, Eric James, Georg A. Grell, Saulo R. Freitas, Gabriel Pereira, Pablo E. Saide
Summary: The study found that models often overestimate the injection of wildfire smoke plumes into the free troposphere, while actual observations show a lower rate. The performance of the models was significantly improved by using observed heat flux and boundary layer heights.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Environmental Sciences
Xinxin Ye, Pargoal Arab, Ravan Ahmadov, Eric James, Georg A. Grell, Bradley Pierce, Aditya Kumar, Paul Makar, Jack Chen, Didier Davignon, Greg R. Carmichael, Gonzalo Ferrada, Jeff McQueen, Jianping Huang, Rajesh Kumar, Louisa Emmons, Farren L. Herron-Thorpe, Mark Parrington, Richard Engelen, Vincent-Henri Peuch, Arlindo da Silva, Amber Soja, Emily Gargulinski, Elizabeth Wiggins, Johnathan W. Hair, Marta Fenn, Taylor Shingler, Shobha Kondragunta, Alexei Lyapustin, Yujie Wang, Brent Holben, David M. Giles, Pablo E. Saide
Summary: Wildfire smoke is a significant concern for human and environmental health, but biomass burning emissions and smoke remain sources of uncertainty in air quality forecasts. Evaluation of 12 state-of-the-art air quality forecasting systems during the Williams Flats fire in 2019 revealed discrepancies in fire emissions, aerosol optical depth, and surface PM2.5 forecasts, highlighting the need for improved methodologies to predict smoke emissions and enhance forecast accuracy.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Geosciences, Multidisciplinary
Dien Wu, John C. Lin, Benjamin Fasoli, Tomohiro Oda, Xinxin Ye, Thomas Lauvaux, Emily G. Yang, Eric A. Kort
GEOSCIENTIFIC MODEL DEVELOPMENT
(2018)
Article
Environmental Sciences
Yaning Kang, Mingxu Liu, Yu Song, Xin Huang, Huan Yao, Xuhui Cai, Hongsheng Zhang, Ling Kang, Xuejun Liu, Xiaoyuan Yan, Hong He, Qiang Zhang, Min Shao, Tong Zhu
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2016)
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)