Article
Environmental Sciences
Hyo-Jung Lee, Lim-Seok Chang, Daniel A. Jaffe, Juseon Bak, Xiong Liu, Gonzalo Gonzalez Abad, Hyun-Young Jo, Yu-Jin Jo, Jae-Bum Lee, Cheol-Hee Kim
Summary: Satellite measurements show consistent increase in ozone levels across the Asia-Pacific region, with most regions transitioning to NOx-limited ozone chemistry while some major cities still experience NOx-saturated conditions. Short-term VOC and NOx controls are needed to reduce ozone levels. IPCC predicts that NOx saturation will continue until 2025, with a gradual shift to NOx-limited regimes by 2050. Continued reductions in NOx emissions will be crucial for long-term ozone reduction.
Article
Environmental Sciences
Xin Cai, Yingying Yan, Shuanglin Li, Shaofei Kong, Mengyao Liu, Zexuan Zhang
Summary: Global tropospheric nitrogen dioxide (NO2) changes have varying impacts on ozone formation in different regions subjected to different levels of human activities and environmental conditions. From 2005 to 2019, NO2 concentrations decreased significantly in urban areas, but showed an increasing trend in ocean and remote regions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Yang Shen, Fei Jiang, Shuzhuang Feng, Yanhua Zheng, Zhe Cai, Xiaopu Lyu
Summary: This study comprehensively analyzed the spatiotemporal variations of NO2 concentrations in China and 12 urban agglomerations, showing the anthropogenic and meteorological factors controlling the interannual variations of NO2. Different urban agglomerations exhibit different trends in NO2 interannual variations, primarily dominated by emission changes, with weather conditions also playing a significant role. The study provides basic understanding on the current situation of NO2 pollution and is helpful for policymakers and those interested in the study of tropospheric ozone changes in China and downwind areas.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Yang Shen, Fei Jiang, Shuzhuang Feng, Zheng Xia, Yanhua Zheng, Xiaopu Lyu, LingYu Zhang, Chenxi Lou
Summary: Since 2013, efforts to decrease air pollution in China have led to a significant decrease in annual NO2 concentrations but an increase in O-3 concentrations. We analyzed the trends in diurnal difference (DD) of NO2 concentrations across eastern China and urban agglomerations. The observed DD of NO2 has increased in most cities and UAs, primarily due to changes in anthropogenic emissions, which has contributed to the enhanced O-3 pollution in China.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Haofan Wang, Zhihong Liu, Yang Zhang, Zhengyang Yu, Chunrong Chen
Summary: Urban air pollution is a major public health concern in highly developed cities, and the study found significant differences in the impact of various urban canopy models on urban air quality simulations. Certain models perform better in different seasons.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Engineering, Environmental
Jing Wei, Song Liu, Zhanqing Li, Cheng Liu, Kai Qin, Xiong Liu, Rachel T. Pinker, Russell R. Dickerson, Jintai Lin, K. F. Boersma, Lin Sun, Runze Li, Wenhao Xue, Yuanzheng Cui, Chengxin Zhang, Jun Wang
Summary: This study developed a novel artificial intelligence approach to fill the gaps in satellite data and derive high-resolution daily surface NO2 concentrations over mainland China. The resulting dataset provides valuable information for studying air pollution patterns, holiday effects, and the impact of the COVID-19 pandemic on NO2 concentrations.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Chaoqun Li, Mingchen Ma, Wenbin Kou, Xinran Zeng, Wenxuan Cheng, Houwen Wang, Jiankai Zhang, Wuke Wang, Weili Lin, Hong Li, Yuanyuan Zhu, Xiaohong Yao, Huiwang Gao, Yang Gao
Summary: The study found that stratospheric ozone intrusion plays a significant role in affecting tropospheric ozone concentrations through STT, and successfully quantified the impact using an inert tracer, confirming the ozone enhancement caused by STT over the Qinghai-Tibet Plateau. The research indicates that this method is applicable to other regions and can help monitor STT on a wider scale in the future.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Meteorology & Atmospheric Sciences
Serin Kim, Daewon Kim, Hyunkee Hong, Lim-Seok Chang, Hanlim Lee, Deok-Rae Kim, Donghee Kim, Jeong-Ah Yu, Dongwon Lee, Ukkyo Jeong, Chang-Kuen Song, Sang-Woo Kim, Sang Seo Park, Jhoon Kim, Thomas F. Hanisco, Junsung Park, Wonei Choi, Kwangyul Lee
Summary: The Geostationary Environmental Monitoring Spectrometer (GEMS) was evaluated by comparing its NO2 total column data with the NO2 vertical column density (VCD) measured by the Pandora spectrometer system. The results showed that GEMS had higher sensitivity to atmospheric NO2 in less cloudy conditions, but overall, its measurements tended to be lower than Pandora. By correcting for the representativeness in the Pandora data, a better correlation was achieved.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2023)
Article
Meteorology & Atmospheric Sciences
Sanbao Zhang, Shanshan Wang, Ruibin Xue, Jian Zhu, Aimon Tanvir, Danran Li, Bin Zhou
Summary: Responses to the COVID-19 pandemic resulted in significant reductions in air pollutant emissions. This study used machine learning models to assess the vertical distributions of nitrogen dioxide (NO2) and formaldehyde (HCHO) during lockdown. The simulations showed that NO2 decreased at all altitudes, while HCHO decreased at low altitudes and increased at high altitudes. Surface pollutants had a greater impact on the reductions below 0.5 km, while meteorological factors played a more significant role above 0.5 km.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Environmental Sciences
Beata Wieczorek
Summary: The aim of this study was to estimate the changes in pollutant concentrations and develop a spatiotemporal pattern in Central and Eastern Europe, specifically in Poland and Ukraine. The difficulty in accessing the war-afflicted area in Ukraine, combined with pollution from industrial facilities and explosive weapons, poses a threat to air quality. The study used satellite data and ground measurements to analyze the distribution of sulfur dioxide, nitrogen dioxide, and carbon monoxide concentrations, finding an increase in NO2 concentration in Poland and a decrease in SO2 and CO concentrations in both countries, with a decrease in NO2 concentration in Ukraine.
Article
Environmental Sciences
Shidong Fan, Ying Li
Summary: The relationships between oceanic emissions and air chemistry are complex and not fully understood. The impact of marine halogen emissions on the hydroxyl (OH) radical is crucial for regional air chemistry. This study aims to quantify the influence of marine-emitted halogens on OH and analyzes the pathways through which these halogens affect OH. Results show a complex response of OH production rate to marine halogen emissions, with both increases and decreases observed in different regions.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Geosciences, Multidisciplinary
Yunpeng Dong, Shengsi Sun, M. Santosh, Jie Zhao, Jiaopeng Sun, Dengfeng He, Xiaohui Shi, Bo Hui, Chao Cheng, Guowei Zhang
Summary: The Central China Orogenic Belt (CCOB) consists of multiple important orogens that record the continental collision history of the North China, South China, Qaidam, Tarim and Qiangtang Blocks. From around 550 million years ago, the breakup of the Rodinia supercontinent led to the formation of the Proto-Tethys Ocean, and subsequent processes such as spreading and subduction shaped the evolution of the CCOB. The CCOB has undergone a complex tectonic evolution from the early Proto-Tethys to the later Paleo-Tethys domains, leading to the formation and closure of various oceans and back-arc basins.
Article
Environmental Sciences
Haoyue Wang, Wanlin Wei, Huizheng Che, Xiao Tang, Jianchun Bian, Ke Yu, Weiguo Wang
Summary: This study retrieved aerosol extinction profiles and vertical column densities of pollutants in Shanghai from July 28 to August 5, 2015 using MAX-DOAS and lookup table. The results showed a significant increase in aerosol concentration in the afternoon, with pollutants exhibiting different diurnal patterns influenced by ground factors and meteorological conditions.
Article
Environmental Sciences
Fangcheng Su, Qixiang Xu, Ke Wang, Shasha Yin, Shenbo Wang, Ruiqin Zhang, Xiaoyan Tang, Qi Ying
Summary: Intensive temporary air pollution control measures in Zhengzhou and six neighboring cities during the 2019 National Games of Ethnic Minorities led to significant reductions in PM2.5, mainly due to reductions in primary PM emissions. The reductions in precursor gases were not as effective in reducing secondary PM components. Concentrations of daily maximum 8-hour Ozone increased on high O3 days, suggesting the need for a specific ratio of NOx to VOC reductions to avoid these increases.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Dongqing Li, Qizhong Wu, Hui Wang, Han Xiao, Qi Xu, Lizhi Wang, Jinming Feng, Xiaochun Yang, Huaqiong Cheng, Lanning Wang, Yiming Sun
Summary: The Spring Festival in China significantly improves air quality in major cities, with a notable decrease in NO2 concentration due to reduced traffic. However, during the COVID-19 pandemic, reduced urban traffic has led to an improvement in air quality without the notable tide phenomenon seen during the Spring Festival.
ATMOSPHERIC POLLUTION RESEARCH
(2021)
Review
Environmental Sciences
Ting Yang, Hongyi Li, Haibo Wang, Youwen Sun, Xi Chen, Futing Wang, Lei Xu, Zifa Wang
Summary: This article mainly discusses the spatiotemporal distribution and vertical structure characteristics of aerosols using observations and numerical models to understand aerosol pollution and its effects. However, the limitations of observations and uncertainties of numerical models introduce biases in aerosol calculations and predictions. Data assimilation integrates observations and numerical models to improve model accuracy and facilitate the development of atmospheric aerosol pollution research.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Meteorology & Atmospheric Sciences
Xuechun Luo, Xiao Tang, Haoyue Wang, Lei Kong, Huangjian Wu, Weiguo Wang, Yating Song, Hongyan Luo, Yao Wang, Jiang Zhu, Zifa Wang
Summary: In recent years, China has implemented measures to improve air quality, particularly in the Beijing-Tianjin-Hebei (BTH) region. This study uses data integration and simulation methods to assess changes in air pollutant emissions in the BTH region from 2014 to 2019. The results show a significant decrease in emissions, reduced uncertainty, and improved spatial distribution.
ADVANCES IN ATMOSPHERIC SCIENCES
(2023)
Article
Environmental Sciences
Qian Ye, Jie Li, Xiao Tang, Xueshun Chen, Lei Kong, Huansheng Chen, Wenyi Yang, Huiyun Du, Xiaole Pan, Wei Wang, Lili Zhu, Jianjun Li, Zhe Wang, Yele Sun, Lanzhong Liu, Junji Cao, Zifa Wang
Summary: The uncertainty in the quantitative estimates of long-range transport of pollutants in air quality models is large. This study aims to assess the impact of uncertainties in input parameters on the model estimates using the GNAQPMS-SM model and Latin hypercube sampling method. The uncertainties of input parameters are reasonably quantified and the multiple linear regression method is used to fit ensemble simulation results, providing more accurate estimates of pollutant transport.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Qixin Tan, Baozhu Ge, Syuichi Itahashi, Lu Gan, Ying Zhang, Shuyan Xie, Ying Liu, Danhui Xu, Xueshun Chen, Lin Wu, Xiaole Pan, Wei Wang, Jianbin Wu, Jie Li, Junhua Wang, Xiaobin Xu, Joshua S. Fu, Zifa Wang
Summary: This study uses the Nested Air Quality Prediction Modeling System to investigate the effect of typhoon Hagupit on the wet deposition of nitrogen in eastern coastal China. The results reveal an enhancement mechanism of nitrogen deposition related to the 'pumping effect' of the typhoon, where air pollutants are pumped into higher altitudes and deposited via the in-cloud scavenging process. This study updates our understanding of the source-receptor relationship on atmospheric wet deposition caused by tropical cyclones.
ENVIRONMENTAL RESEARCH COMMUNICATIONS
(2023)
Article
Meteorology & Atmospheric Sciences
Danjie Jia, Jinyuan Xin, Zifa Wang, Weifeng Wang, Xiaoyuan Wang, Hang Xiao, Cheng Liu, Jun Zhou, Lei Tong, Yele Sun, Yongjing Ma, Dandan Zhao, Fangkun Wu, Lili Wang
Summary: The study observed the high-resolution dynamic, thermal, and material structures of sea-land breeze circulation (SLB) at the Ningbo coast in the East China Sea. SLB occurred more frequently in spring than in winter, with the horizontal wind speed generally less than 8 m/s and the vertical wind speed less than 0.17 m/s. The circulation heights and dominant heights of sea and land breezes varied between winter and spring. The development of SLB in winter showed distinct differences compared to spring, with a shorter transition process and lower turbulent kinetic energy.
ATMOSPHERIC RESEARCH
(2023)
Article
Environmental Sciences
Di Liu, Shaofeng Xu, Yunchao Lang, Shengjie Hou, Lianfang Wei, Xiaole Pan, Yele Sun, Zifa Wang, Kimitaka Kawamura, Pingqing Fu
Summary: This study investigated the source, formation, and seasonality of biogenic secondary organic aerosol (BSOA) in Beijing, China from April 2017 to January 2018. BSOA tracers derived from isoprene, monoterpene, and sesquiterpene were measured and showed significant seasonal variations. Isoprene SOA tracers correlated with biomass burning and long-range transport, while sesquiterpene SOA tracer was associated with local biomass burning. These results suggest that BSOA tracers are promising for understanding the source, formation, and seasonality of BSOA.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Jinyuan Xin, Yongjing Ma, Dandan Zhao, Chongshui Gong, Xinbing Ren, Guiqian Tang, Xiangao Xia, Zifa Wang, Junji Cao, Jordi Vila-Guerau de Arellano, Scot T. Martin
Summary: The interaction between aerosols and the planetary boundary layer has a significant impact on urban air quality. This study focused on the complex feedback of aerosols on the Beijing megacity and found notable distinctions in aerosol properties and vertical distributions among different air masses. Aerosols consistently suppressed the daytime convective boundary layer, indicating the potential complexity of aerosol-PBL interactions in future scenarios and other urban regions.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Xi Chen, Ting Yang, Haibo Wang, Futing Wang, Zifa Wang
Summary: Understanding the vertical characteristics of aerosols is important for climate and atmospheric environment. This study investigated aerosol profiles in eight regions of China and discussed the factors influencing the vertical aerosol structure. The study found annual variations in the extinction coefficient profiles, the correlation between relative humidity and extinction coefficient, and the main aerosol subtypes in different regions.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Environmental Sciences
Zhilan Ye, Jie Li, Xueshun Chen, Wenyi Yang, Huiyun Du, Tao Wang, Qian Ye, Yujing Zhang, Zixi Wang, Zhe Wang, Zifa Wang
Summary: This study aims to establish an optimal emission reduction system through linear programming based on source analysis, PM2.5 sensitivity, emission status, and pollution conditions. Compared to the equal proportion scenario, the optimal proportion scenario not only has lower emission reduction ratios but also greater air quality improvement. Through technological upgrading and industrial transfer from North China to Northwest China, the goal of eliminating PMCPDs in North China can be achieved, and a zero-increase relative to the business as usual scenario can also be achieved in Northwest China.
ATMOSPHERIC POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Yan Li, Lu Lei, Jiaxing Sun, Yueqi Gao, Peng Wang, Siyu Wang, Zhaolei Zhang, Aodong Du, Zhijie Li, Zifa Wang, Jin Young Kim, Hwajin Kim, Hongliang Zhang, Yele Sun
Summary: The study found that secondary inorganic aerosol and photochemical-related secondary organic aerosol significantly decreased in Beijing summers, while the decreases in primary aerosol species and gaseous precursors were comparably small. Meteorology and emission reductions play important roles in aerosol composition and formation mechanisms.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Xiaoyong Liu, Jun Yan, Zifa Wang, Xiaole Pan, Fangcheng Su, Junhui Yan, Jiqiang Niu
Summary: Surface ozone pollution is an important environmental problem in China. We conducted a study to investigate the influence of meteorological factors and emissions on ozone concentrations in coastal cities. The study found that ozone concentrations increased from 2015 to 2019 and decreased in 2020, and different components on different timescales had varying effects on ozone concentrations.
AIR QUALITY ATMOSPHERE AND HEALTH
(2023)
Article
Geosciences, Multidisciplinary
Lichao Yang, Wansuo Duan, Zifa Wang
Summary: This paper investigates how to refine the ground meteorological observation network to greatly improve the PM2.5 concentration forecasts. By identifying sensitive areas, a cost-effective observation network is formed, achieving forecasting skill comparable to and even higher than assimilating all ground station observations. The study reveals the uselessness of some current ground stations in the Beijing-Tianjin-Hebei region for improving PM2.5 forecasts.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2023)
Article
Environmental Sciences
Hang Liu, Xiaole Pan, Shandong Lei, Yuting Zhang, Aodong Du, Weijie Yao, Guiqian Tang, Tao Wang, Jinyuan Xin, Jie Li, Yele Sun, Junji Cao, Zifa Wang
Summary: In this study, vertical measurements of black carbon (BC) and other pollutants were conducted in the Beijing urban area. The vertical profiles showed different types of BC distribution, with uniform distribution during the day and gradual or sharp decrease at night. The study also found variations in the ozone concentration and the coating thickness of BC particles along the vertical direction. This research provides insights into the regional environmental effects of BC.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Lei Kong, Xiao Tang, Jiang Zhu, Zifa Wang, Yele Sun, Pingqing Fu, Meng Gao, Huangjian Wu, Miaomiao Lu, Qian Wu, Shuyuan Huang, Wenxuan Sui, Jie Li, Xiaole Pan, Lin Wu, Hajime Akimoto, Gregory R. Carmichael
Summary: The lockdown measures during the COVID-19 pandemic in China had limited impact on air pollution, and traffic control alone cannot effectively address O-3 and PM2.5 pollution.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Shujun Zhong, Shuang Chen, Junjun Deng, Yanbing Fan, Qiang Zhang, Qiaorong Xie, Yulin Qi, Wei Hu, Libin Wu, Xiaodong Li, Chandra Mouli Pavuluri, Jialei Zhu, Xin Wang, Di Liu, Xiaole Pan, Yele Sun, Zifa Wang, Yisheng Xu, Haijie Tong, Hang Su, Yafang Cheng, Kimitaka Kawamura, Pingqing Fu
Summary: Biomass burning is a key source of urban aerosols in the North China Plain, with limited knowledge on the influence of biogenic SOA loading on the molecular composition of wintertime organic aerosols. Water-soluble organic compounds in PM2.5 from urban Tianjin were analyzed, revealing that biomass burning contributes to the majority of CHO and CHON compounds. The chemistry and level of biogenic SOA loading plays a significant role in the formation of secondary compounds, including CHO, CHON, CHOS, and CHONS. The hydrolysis of nitrooxy-organosulfates is identified as a possible pathway for the formation of organosulfates.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Muhammad Waqas, Majid Nazeer, Man Sing Wong, Wu Shaolin, Li Hon, Joon Heo
Summary: The socio-economic restriction measures implemented in the United States have significantly reduced nitrogen dioxide (NO2) emissions. The study highlights the impact of factors such as human mobility, population density, income, climate, and stationary sources on the reduction of NO2 at different stations. The research emphasizes the scientific impacts of the NO2 reduction and income inequality revealed by the pandemic on air quality and health disparities.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Guorui Zhi, Jinhong Du, Aizhong Chen, Wenjing Jin, Na Ying, Zhihui Huang, Peng Xu, Di Wang, Jinghua Ma, Yuzhe Zhang, Jiabao Qu, Hao Zhang, Li Yang, Zhanyun Ma, Yanjun Ren, Hongyan Dang, Jianglong Cui, Pengchuan Lin, Zhuoshi He, Jinmin Zhao, Shuo Qi, Weiqi Zhang, Wenjuan Zhao, Yingxin Li, Qian Liu, Chen Zhao, Yi Tang, Peng Wei, Jingxu Wang, Zhen Song, Yao Kong, Xiangzhe Zhu, Yi Shen, Tianning Zhang, Yangxi Chu, Xinmin Zhang, Jiafeng Fu, Qingxian Gao, Jingnan Hu, Zhigang Xue
Summary: An comprehensive emission inventory for China in 2019, which includes both air pollutants and greenhouse gases, was developed in this study. The inventory utilizes existing frameworks and data to provide comparable emissions data and demonstrates the relationship between emissions and economic development.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
I-Ting Ku, Yong Zhou, Arsineh Hecobian, Katherine Benedict, Brent Buck, Emily Lachenmayer, Bryan Terry, Morgan Frazier, Jie Zhang, Da Pan, Lena Low, Amy Sullivan, Jeffrey L. Collett Jr
Summary: Unconventional oil and natural gas development (UOGD) in the United States has expanded rapidly in recent decades, raising concerns about its impact on air quality. This study conducted extensive air monitoring during the development of several large well pads in Broomfield, Colorado, providing a unique opportunity to examine changes in local air toxics and VOC concentrations during well drilling and completions and production. The study identified significant increases in VOC concentrations during drilling operations, highlighting the importance of emissions from synthetic drilling mud. The findings suggest opportunities to mitigate emissions during UOGD operations.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Puji Lestari, Akbar R. Tasrifani, Wiranda I. Suri, Martin J. Wooster, Mark J. Grosvenor, Yusuke Fujii, Vissia Ardiyani, Elisa Carboni, Gareth Thomas
Summary: This study developed field emission factors for various pollutants in peatland fires and estimated the total emissions. Gas samples were collected using an analyzer, while particulate samples were collected using air samplers. The study found significant emissions of CO2, CO, PM2.5, carbon aerosols, water-soluble ions, and elements from the fires in Central Kalimantan, Indonesia in 2019.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Ligang Li, Yuyu Chen, Lu Fan, Dong Sun, Hu He, Yongshou Dai, Yong Wan, Fangfang Chen
Summary: A high-precision retrieval method based on a deep convolutional neural network and satellite remote sensing data is proposed to obtain accurate methane vertical profiles.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Hyung Joo Lee, Toshihiro Kuwayama, Michael Fitzgibbon
Summary: This study investigated the changes in nitrogen dioxide (NO2) air pollution levels and their disparities in California, U.S. during the pandemic of coronavirus disease 2019 (COVID-19). The results showed a decrease in NO2 concentrations, especially in urban and high-traffic areas. However, socially vulnerable populations still experienced higher levels of NO2 exposure. The study suggests that reducing NO2 disparities, particularly racial inequity, can be achieved through continued regulatory actions targeting traffic-related NOx emissions.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Maria Chiara Pietrogrande, Beatrice Biffi, Cristina Colombi, Eleonora Cuccia, Umberto Dal Santo, Luisa Romanato
Summary: This study investigates the chemical composition and oxidative potential of PM10 particles in the Po Valley, Italy, and demonstrates the impact of high levels of atmosphere ammonia. The rural area had significantly higher ammonia concentrations compared to the urban site, resulting in higher levels of secondary inorganic aerosol. Although the SIA components did not contribute significantly to the PM10 oxidative reactivity, they were correlated with the oxidative potential measurements. This suggests that the contribution of SIA to PM oxidative toxicity cannot be ignored.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Natalie Allen, Jan Gacnik, Sarrah M. Dunham-Cheatham, Mae Sexauer Gustin
Summary: Accurate measurement of atmospheric reactive mercury is challenging due to its reactivity and low concentrations. The University of Nevada, Reno Reactive Mercury Active System (RMAS) has been shown to be more accurate than the industry standard, but has limitations including long time resolution and sampling biases. Increasing the sampling flow rate negatively affected RM concentrations, but did not impact the chemical composition of RM captured on membranes.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Chin-Yu Hsu, Wei-Ting Hsu, Ching-Yi Mou, Pei-Yi Wong, Chih-Da Wu, Yu-Cheng Chen
Summary: This study estimated the daily exposure concentrations of PM2.5 for elderly individuals residing in different regions of Taiwan using land use regression with machine learning (LUR_ML) and microenvironmental exposure (ME) models. The accuracy of the models varied across regions, with the ME models exhibiting higher predictions and lower biases. The use of region-specific microenvironmental measurements in the ME model showed potential for accurate prediction of personal PM2.5 exposure.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Xiaohan Si, Kerrie Mengersen, Chuchu Ye, Wenbiao Hu
Summary: This study found that there is an interactive effect between air pollutants and weather factors, which significantly affects influenza transmission. Future research should consider the interactive effects between pollutants and temperature or humidity to evaluate the environment-influenza association.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Luxi Xu, Ruijun Xu, Yunshao Ye, Rui Wang, Jing Wei, Chunxiang Shi, Qiaoxuan Lin, Ziquan Lv, Suli Huang, Qi Tian, Yuewei Liu
Summary: This study aimed to evaluate the impact of ambient air pollution on hospital admissions for angina. The results showed that exposure to ambient particulate matter, sulfur dioxide, nitrogen dioxide, carbon monoxide, and ozone are associated with an increased risk of hospital admissions for angina. The association with nitrogen dioxide exposure was found to be the strongest.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Xinyu Yu, Man Sing Wong, Majid Nazeer, Zhengqiang Li, Coco Yin Tung Kwok
Summary: This study proposes a novel method to address the challenge of missing values in satellite-derived AOD products and creates a comprehensive daily AOD dataset for the Guangdong-Hong Kong-Macao Greater Bay Area. By reconstructing missing values and developing a new model, the derived dataset outperforms existing products and agrees well with ground-based observations. Additionally, the dataset exhibits consistent temporal patterns and more spatial details.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Yidan Zhang, Yifan Xu, Bo Peng, Wu Chen, Xiaoyu Cui, Tianle Zhang, Xi Chen, Yuan Yao, Mingjin Wang, Junyi Liu, Mei Zheng, Tong Zhu
Summary: This study developed a sensitive method to measure the metallic components of atmospheric fine particulate matter (PM2.5) and compared the results with different analysis methods. The concentrations of metallic components in personal PM2.5 samples were found to be significantly different from corresponding fixed-site samples. Personal sampling can reduce exposure misclassifications, and measuring metallic components is useful for exploring health risks and identifying sources of PM2.5.
ATMOSPHERIC ENVIRONMENT
(2024)
Review
Environmental Sciences
Jamie Leonard, Lea Ann El Rassi, Mona Abdul Samad, Samantha Prehn, Sanjay K. Mohanty
Summary: Increasing concentrations of microplastics in the Earth's atmosphere could have adverse effects on ecosystems and human health. The deposition rate of airborne microplastics is influenced by both land use and climate, and a global analysis suggests that climate may have a greater impact on the concentration and deposition rate of microplastics than land use.
ATMOSPHERIC ENVIRONMENT
(2024)
Article
Environmental Sciences
Tian Zhou, Xiaowen Zhou, Zining Yang, Carmen Cordoba-Jabonero, Yufei Wang, Zhongwei Huang, Pengbo Da, Qiju Luo, Zhijuan Zhang, Jinsen Shi, Jianrong Bi, Hocine Alikhodja
Summary: This study investigated the long-range transport and effects of North African and Middle Eastern dust in East Asia using lidar observations and model simulations. The results showed that the dust originated from multiple sources and had a long transport time. The vertical distribution of the dust was found to be crucial for assessing its impacts.
ATMOSPHERIC ENVIRONMENT
(2024)