Article
Environmental Sciences
Huiming Lin, Yindong Tong, Chenghao Yu, Long Chen, Xiufeng Yin, Qianggong Zhang, Shichang Kang, Lun Luo, James Schauer, Benjamin de Foy, Xuejun Wang
Summary: The transport of atmospheric pollutants from the Indian subcontinent to the Tibetan Plateau has influenced the Tibetan environments, particularly in the Nyingchi region. The study investigated the influence of the Indian summer monsoon on the behavior and origin of mercury in Nyingchi. Results showed that the concentration and sources of mercury varied between the preceding Indian summer monsoon period and the Indian summer monsoon period. The study also identified long-distance transport, local emissions, meteorological factors, and snowmelt factors as the main factors affecting the local mercury concentration in Nyingchi.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Review
Environmental Sciences
Ruiyang Sun, Guangyi Sun, Sae Yun Kwon, Xinbin Feng, Shichang Kang, Qianggong Zhang, Jie Huang, Runsheng Yin
Summary: The biogeochemical cycling of mercury on the Tibetan Plateau is influenced by various factors such as human activities, climate change, and glacier melting. Significant bioaccumulation of mercury in Tibetan aquatic food chains highlights the need for international collaboration to reduce mercury migration.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Optics
Qike Yang, Xiaoqing Wu, Tao Luo, Chun Qing, Renmin Yuan, Changdong Su, Changshun Xu, Yang Wu, Xuebin Ma, Zhiyuan Wang
Summary: This study investigates the performance of forecasting surface-layer optical turbulence (C2n) using the WRF model. The forecasts are compared with measurements from two instruments and show good agreement under strong turbulence conditions, but slightly divergent results under weak turbulence. The predicted C2n agree well with measurement trends among different forecast times, with short-range forecasting performing slightly better than medium-range forecasting.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Environmental
Deming Han, Qingru Wu, Minneng Wen, Yi Tang, Guoliang Li, Yujia Ren, Yuying Cui, Zhijian Li, Jianbo Shi, Qianggong Zhang, Xiufeng Yin, Shuxiao Wang
Summary: As the Third Pole of the world, the Tibetan Plateau is sensitive to human activities. Biomass combustion is an important source of mercury emissions in the plateau, but due to limited knowledge about emission characteristics and activity levels, uncertainties exist in estimating these emissions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Logan Vogelsong, Jose D. Fuentes, Abu Asaduzzaman
Summary: The deposition and reduction mechanisms of oxidized mercury on the ice surface are investigated using first-principles density functional theory. Oxidized mercury molecules adsorb on the ice surface, forming strong interactions and validating the high concentration of Hg observed during springtime in the Arctic. Dissociation of mercury molecules leads to the formation of reduced Hg atoms on the surface, providing a new pathway for mercury reduction and re-emission into the atmosphere.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Multidisciplinary Sciences
Xiao Guo, Zimiao Zhao, Wenjing Liu, Huiguo Sun, Zhifang Xu
Summary: The study investigates the chemical weathering rates and mechanisms of the glacier areas in the Yarlung Tsangpo River Basin (YTRB). Carbonate weathering is found to be the dominant process, followed by silicate weathering. The study also identifies climate, lithology, and glacial landforms as the primary control factors for chemical weathering in the glacier areas.
Article
Geosciences, Multidisciplinary
Benjamin M. Geyman, Colin P. Thackray, Daniel J. Jacob, Elsie M. Sunderland
Summary: Volcanism is the largest natural source of mercury to the biosphere. This study presents updated estimates of volcanic mercury emissions based on satellite remote sensing and improved methods. The results show that volcanic mercury emissions have a greater impact on the atmosphere in the Northern Hemisphere compared to the Southern Hemisphere, and the variability in volcanic emissions may obscure trends in atmospheric mercury concentrations driven by human activities. The findings emphasize the importance of considering volcanic mercury emissions in global monitoring sites for mitigating mercury pollution.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Multidisciplinary Sciences
Licai Deng, Fan Yang, Xiaodian Chen, Fei He, Qili Liu, Bo Zhang, Chunguang Zhang, Kun Wang, Nian Liu, Anbing Ren, Zhiquan Luo, Zhengzhou Yan, Jianfeng Tian, Jun Pan
Summary: The results of site testing near Lenghu Town in Qinghai Province on the Tibetan Plateau suggest that it is suitable for astronomical observing. With high altitudes, clear skies, and stable atmospheric conditions, the Tibetan Plateau offers good opportunities for astronomy and particle astrophysics. This potential astronomical site is characterized by a high percentage of clear nights with photometric conditions, low night temperature variation, and low water vapor content.
Article
Environmental Sciences
Huiming Lin, Yindong Tong, Long Chen, Chenghao Yu, Zhaohan Chu, Qianru Zhang, Xiufeng Yin, Qianggong Zhang, Shichang Kang, Junfeng Liu, James Schauer, Benjamin de Foy, Xuejun Wang
Summary: This study conducted continuous monitoring of atmospheric mercury (Hg) species in Lhasa, Tibet. The results showed that during the Indian summer monsoon (S-ISM) period, the concentrations of gaseous elemental Hg (GEM), gaseous oxidized Hg (GOM), and particle-bound Hg (PBM) were relatively high. Combustion events were identified as the main contributor to the high Hg concentration events in the city.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
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
Xiangde Xu, Yi Tang, Yinjun Wang, Hongshen Zhang, Ruixia Liu, Mingyu Zhou
Summary: In this study, the diurnal variations and formation mechanisms of low clouds at different elevations are analyzed. The existence of a triggering mechanism for convection over the Tibetan Plateau (TP) and the association among low air density, strong turbulence, and ubiquitous popcorn-like cumulus clouds are further discussed. The findings suggest that the buoyancy term (BT) and shear term (ST) over the TP play a significant role in the convective activities in the lower troposphere and contribute to the formation of an increasing planetary boundary layer height (PBLH).
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Review
Engineering, Environmental
Ting Wang, Liyin Qu, Dehua Luo, Xiaoliang Ji, Zengling Ma, Zhonggen Wang, Randy A. Dahlgren, Minghua Zhang, Xu Shang
Summary: Microplastics are a growing concern as they pose a threat to global ecological systems and human health. Recent studies have found microplastics in the remote Tibetan Plateau, which is known as the Third Pole. This article summarizes the evidence of microplastic pollution in different environments of the Tibetan Plateau and assesses their distribution, sources, fate, and ecological effects. The study shows that microplastics are pervasive in both living and non-living components of the Tibetan Plateau, even at high altitudes like Mount Everest. The tourism industry and long-range atmospheric transport are identified as significant sources of microplastic pollution in this sparsely populated area.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Jianjun Yan, Geli Wang, Peicai Yang, Dan Li, Jianchun Bian
Summary: This paper investigates the formation mechanism of the ozone valley in the upper stratosphere over the Tibetan Plateau. The results suggest that the different distributions of NO2 during the day and night, as well as the temperature difference between the Tibetan Plateau and other regions at the same latitude, may contribute to the diurnal and nighttime variation of the ozone valley.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Meteorology & Atmospheric Sciences
Yongli He, Wenlong Tian, Jianping Huang, Guodong Wang, Yu Ren, Hongru Yan, Haipeng Yu, Xiaodan Guan, Huancui Hu
Summary: Rapid warming over the Tibetan Plateau has led to an increasing trend in atmospheric water vapor content, particularly in the western region. The study shows that both internal and external cycles contribute to the wetting phenomenon, with the western TP experiencing increased PRE, evaporation, and moisture convergence. Additionally, the atmospheric heating source is also rising in the western TP, leading to a shift in moisture transportation and the formation of a positive feedback loop.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Engineering, Environmental
Yajun Si, Fengmei Jin, Wuchao Yang, Zhi Li
Summary: Exploring climate change and teleconnection on the Tibetan Plateau is crucial for understanding global climate change. However, further research is needed due to limited observation data and inadequate consideration of multiple atmospheric circulation indices. In this study, a climate dataset for 1901-2017 was used to analyze precipitation and temperature, and multivariate wavelet coherence was employed to investigate the combined effects of various circulation indices. The results showed spatial and temporal variations in climate, with a general trend of increasing precipitation and temperature. Single and combined circulation indices had significant impacts on climate change, highlighting the importance of considering multiple factors.
STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
(2023)
Article
Environmental Sciences
Xiaofei Li, Jingning Guo, Feng Yu, Lekhendra Tripathee, Fangping Yan, Zhaofu Hu, Shaopeng Gao, Xiaobo He, Chaoliu Li, Shichang Kang
Summary: This study investigates the characteristics and roles of carbonaceous matter (CM) in the Tibetan Plateau River Basin using precipitation and glacier samples. The results show that CM significantly affects the carbon cycle and radiative forcing (RF) of glaciers. Various sources of CM were identified, and two major pollution source areas were identified as well. Moreover, the optical properties of CM varied among different sample types. The study also estimated the RF of CM relative to black carbon (BC) in different sample types.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Pengfei Chen, Shichang Kang, Qinyi Gan, Ye Yu, Xianlei Yuan, Yajun Liu, Lekhendra Tripathee, Xiaoxiang Wang, Chaoliu Li
Summary: One-year online measurements in Lanzhou were conducted to investigate the variations in mass concentrations and light absorption characteristics of organic carbon (OC) and black carbon (BC) in PM2.5. The results showed clear seasonal variations, with the highest concentrations in winter. Fossil fuel combustion was identified as the primary source of carbonaceous components, and biomass burning contributed significantly to BC in winter. Brown carbon (BrC) was found to have a considerable impact on the total absorption coefficient, with higher contributions in winter.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Environmental Sciences
Benjamin de Foy, James J. Schauer, Alba Lorente, Tobias Borsdorff
Summary: Even though methane concentrations have contributed significantly to climate forcing, the reasons behind recent increases in global methane levels are still unclear. Using satellite remote sensing, we found elevated methane levels in 61 urban areas worldwide and estimated their emissions using a two-dimensional Gaussian model. Our results suggest that the Emissions Database for Global Atmospheric Research (EDGAR) greenhouse gas emission inventory may underestimate methane emissions from urban areas by a factor of 3-4. Scaling up our findings, we estimate that these urban areas with over 2 million inhabitants could account for up to 22% of global methane emissions. The emission estimates of these urban areas correlate with untreated wastewater rates, indicating that reducing untreated wastewater discharges could significantly reduce global methane emissions while providing additional ecological and human benefits.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Engineering, Environmental
Wenting Zhou, Tian Ma, Xiufeng Yin, Xiaodong Wu, Quanlian Li, Dipesh Rupakheti, Xin Xiong, Qianggong Zhang, Cuicui Mu, Benjamin de Foy, Maheswar Rupakheti, Shichang Kang, Dahe Qin
Summary: Thaw slumps in permafrost regions can lead to significant carbon loss, but the contribution of microbial and plant-derived carbon in this process is not well understood. In a permafrost thaw slump in the Tibetan Plateau, the study provides direct evidence that microbial necromass carbon is a major component of the lost carbon. Microbial necromass carbon accounted for approximately 54% of the soil organic carbon loss in the thaw slump.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Jie Huang, Shichang Kang, Xinbin Feng, Wenjun Tang, Kirpa Ram, Junming Guo, Qianggong Zhang, Chhatra Mani Sharma, Chaoliu Li, Lekhendra Tripathee, Feiyue Wang
Summary: The Indian monsoon circulation plays a crucial role in transporting mercury pollution from South Asia to the Himalayas and Tibet Plateau region. A study found a strong overlap between Lake Gokyo and Indian anthropogenic sources, indicating the source of mercury from South Asia. The findings suggest that transboundary atmospheric transport can transport mercury from South Asia northwards to at least the Tanglha Mountains in the northern Himalaya-Tibet.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Letter
Multidisciplinary Sciences
Junhua Yang, Robert R. Gillies, Shichang Kang, Rongjun Wang, Zhen Zhang, Yuling Hu
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Environmental Sciences
Junhua Yang, Shichang Kang, Yuling Hu, Xintong Chen, Mukesh Rai
Summary: South Asian biomass burning is crucial for the heavy springtime air pollution over the Tibetan Plateau, contributing significantly to aerosol components. The transboundary transmissions of these aerosols are regulated by large-scale westerly winds and regional mountain-valley winds. In addition to worsening air quality, aerosols from South Asian biomass burning also lead to temperature decrease and precipitation reduction, posing a threat to the fragile ecosystem of the Tibetan Plateau during springtime.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Huijun Zheng, Xin Wan, Shichang Kang, Pengfei Chen, Quanlian Li, Linda Maharjan, Junming Guo
Summary: Organic aerosols have significant impacts on the Tibetan Plateau, a region highly sensitive to climate change. Studying the concentration and sources of organic molecular tracers, it was found that biomass burning plays a major role in non-monsoon seasons, with significant impacts from South Asian biomass burning in the western, southern, and southeastern regions.
ENVIRONMENTAL POLLUTION
(2024)
Letter
Geosciences, Multidisciplinary
Yulan Zhang, Shichang Kang
Article
Environmental Sciences
Alexander Smith, Jinxi Hua, Benjamin de Foy, James J. Schauer, Victor M. Zavala
Summary: We demonstrate the benefits of using Riemannian geometry in the analysis of multi-site, multi-pollutant atmospheric monitoring data. Our approach utilizes covariance matrices to capture the spatio-temporal variability and correlations among different pollutants at various locations and times. By exploiting the property of covariance matrices lying on a Riemannian manifold, we are able to facilitate dimensionality reduction, outlier detection, and spatial interpolation. We showcase the utility of Riemannian geometry through the analysis of one year's worth of atmospheric monitoring data collected from 34 monitoring stations in Beijing, China.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Didi Hu, Min Xu, Shichang Kang, Jinlei Chen, Chengde Yang, Qian Yang
Summary: This study analyzed the changes in river discharge and sea ice in the Kara and Laptev Seas from 1979 to 2019. The results showed that there were significant increases in discharge and heat from the rivers, while the sea ice concentration decreased. The changes in discharge and riverine heat mainly affected the initial and final stages of sea-ice melting. The cumulative riverine heat from May to September had a large impact on the sea ice changes in the Kara and Laptev Seas. However, the contribution of river discharge changes to the reduction in sea ice concentration was limited at annual scales.
Article
Environmental Sciences
Huiming Lin, Yindong Tong, Long Chen, Chenghao Yu, Zhaohan Chu, Qianru Zhang, Xiufeng Yin, Qianggong Zhang, Shichang Kang, Junfeng Liu, James Schauer, Benjamin de Foy, Xuejun Wang
Summary: This study conducted continuous monitoring of atmospheric mercury (Hg) species in Lhasa, Tibet. The results showed that during the Indian summer monsoon (S-ISM) period, the concentrations of gaseous elemental Hg (GEM), gaseous oxidized Hg (GOM), and particle-bound Hg (PBM) were relatively high. Combustion events were identified as the main contributor to the high Hg concentration events in the city.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Jinlei Chen, Shichang Kang, Adan Wu, Lihong Chen
Summary: The navigability of Arctic maritime passages has improved with the retreat of sea ice, but it also brings potential environmental and climate risks. This investigation studied shipping emissions and climate impacts along the Northern Sea Route under different global warming scenarios. The results show that ship energy consumption is 109 kWh under 2°C and 3°C global warming. Environmental impacts decrease with the use of clean fuel sources, and CO2 has the greatest climate impact.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Wasim Sajjad, Barkat Ali, Hewen Niu, Nikhat Ilahi, Muhammad Rafiq, Ali Bahadur, Abhishek Banerjee, Shichang Kang
Summary: This study investigated the characteristics, prevalence of resistance genes, and tolerance genes in antibiotic-resistant bacteria (ARB) isolated from glacier debris and meltwater in China. The results showed that these bacteria exhibited resistance to multiple antibiotics and metals, with distinct resistance genes identified. The study also highlighted the horizontal transfer of resistance genes between different bacteria species and a strong positive correlation between antibiotic resistance genes and metals tolerance genes.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Hemraj Bhattarai, Lekhendra Tripathee, Shichang Kang, Pengfei Chen, Chhatra Mani Sharma, Kirpa Ram, Junming Guo, Maheswar Rupakheti
Summary: This study provides a comprehensive analysis of nitrogenous and carbonaceous aerosols in PM2.5 and TSP samples collected in the highly polluted Kathmandu Valley. The results show that coarser mode aerosols dominate, but water-soluble total nitrogen and carbonaceous species are more prominent in fine-mode aerosols. The study also indicates that fossil fuel combustion is the major source of carbonaceous aerosols, with contributions from secondary organic aerosols and transported pollutants.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2022)
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)