Article
Environmental Sciences
Chuanqi Gu, Shanshan Wang, Jian Zhu, Wenhao Dai, Jiaqi Liu, Ruibin Xue, Xiang Che, Yanfen Lin, Yusen Duan, Mark O. Wenig, Bin Zhou
Summary: Atmospheric ammonia (NH3) plays a significant role in the nitrogen cycle and has impacts on air quality, ecological balance, and climate change. The contribution of combustion-related NH3, especially from vehicular emissions, is increasing. Research found that high levels of NH3 concentrations were observed on roads in a metropolitan city, suggesting that previous estimates of urban vehicular NH3 emissions may have been underestimated.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Yikai Li, Chengzhi Xing, Haochen Peng, Yuhang Song, Chengxin Zhang, Jingkai Xue, Xinhan Niu, Cheng Liu
Summary: This study conducted a systematic ground validation of GEMS NO2 data in China for the first time. The results showed a high level of accuracy for the data in China. The study also found that the distribution of NO2 was closely related to terrain and observed significant underestimation issues with TROPOMI. Furthermore, using a combination of MAX-DOAS and GEMS data, the study revealed the significant impact of regional and cross-regional transport on NO2 concentrations. The joint observations of GEMS and MAX-DOAS provide reliable data support for NO2 research and control in China, contributing to environmental protection and sustainable development.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Jian Zhu, Shanshan Wang, Xu Dao, Duanyang Liu, Jie Wang, Sanbao Zhang, Ruibin Xue, Guigang Tang, Bin Zhou
Summary: Ground-based MAX-DOAS instruments were used to observe aerosol in urban and suburban areas of Shanghai, showing time delay and altitude distribution differences between different sites, possibly due to varying influences of aerosol transport and boundary layer dynamics. There was mutual aerosol transport between urban and suburban areas, affecting aerosol optical properties in these regions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Hairong Zhang, Ang Li, Zhaokun Hu, Jianfeng Guo, Long Yun, Mingdi Zhang, Hongmei Ren, Hongyan Zhong, Jiangman Xu
Summary: The spatio-temporal variation characteristics of glyoxal were investigated over a 23-day period. It was found that within the wavelength range of 420-459 nm, the calculated value using simulated spectra was closest to the actual value. This wavelength range was selected for further observation experiments. High values of glyoxal were concentrated around noon, indicating a relationship with the emission of biological VOCs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Paolo Pettinari, Elisa Castelli, Enzo Papandrea, Maurizio Busetto, Massimo Valeri, Bianca Maria Dinelli
Summary: The purpose of this study is to fill the gap in the Po Valley region of Italy by introducing a FRM4DOAS-compliant MAX-DOAS instrument called SkySpec-2D. The instrument's performance was evaluated through two measurement campaigns and showed good agreement with other instruments and satellite measurements. SkySpec-2D is now permanently stationed in the Po Valley and routinely provides its MAX-DOAS measurements to the FRM4DOAS validation network.
Article
Optics
Huang Yeyuan, Li Ang, Qin Min, Hu Zhaokun, Xie Pinhua, Xu Jin, Duan Jun, Ren Hongmei, Tian Xin, Li Xiaomei, Ren Bo, Zhang Qiang, Zhong Hongyan
Summary: In investigating NOx pollution in Wuhan during the COVID-19 outbreak, researchers used a mobile MAX-DOAS and a portable ultraviolet DOAS to measure the NOx concentration in the third ring road. The study found that the average NOx emission flux was approximately 10.78 mol/s, and using the combination of mobile MAX-DOAS and portable ultraviolet DOAS effectively reduced measurement errors, but may not be suitable for areas with significant near-surface NOx emission sources.
ACTA OPTICA SINICA
(2021)
Article
Spectroscopy
Liu Hao-ran, Hu Qi-hou, Tan Wei, Su Wen-jing, Chen Yu-jia, Zhu Yi-zhi, Liu Jian-guo
Summary: NO2 plays a vital role in atmospheric photochemistry and studying urban NO2 distribution and emissions is crucial for air pollution control. NO2 pollution sources in Hengshui are mainly located in the southeast near factory clusters and in the east along the outer route, while the western and northern areas are relatively clean. Transportation is the main pollution source of NO2 in Hengshui, and the lower emission flux compared to other cities may be due to dispersed pollution sources and the smaller study area.
SPECTROSCOPY AND SPECTRAL ANALYSIS
(2021)
Article
Environmental Sciences
Bo Ren, Pinhua Xie, Jin Xu, Ang Li, Xin Tian, Zhaokun Hu, Yeyuan Huang, Xiaomei Li, Qiang Zhang, Hongmei Ren, Hongcheng Ji
Summary: Despite stricter atmospheric control measures implemented by the government of Nanjing, air pollution has unexpectedly increased in the second half of 2019, with O-3 pollution and acid rain being major concerns. Observations using MAX-DOAS revealed concentrations of pollutants like NO2, SO2, and HCHO primarily concentrated within 200 meters of the surface in Nanjing. Analysis using PSCF indicated downtown, north, south-central Jiangsu Province, and east-central Anhui Province as important potential source areas for pollutants, with significant transports of SO2 and HCHO from certain regions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Xin Tian, Bo Ren, Pinhua Xie, Jin Xu, Ang Li, Feng Hu, Jiangyi Zheng, Hongmei Ren, Zhaokun Hu, Yifeng Pan, Xiaohui Huang, Zhidong Zhang, Yinsheng Lv, Wei Tian, Zijie Wang
Summary: The study examined the changes in aerosol characteristics in the Yangtze River Delta and surrounding areas, identifying spatial-temporal distribution, sources, and transport pathways of aerosols. It revealed that open biomass burning within the YRD significantly impacts air quality, with aerosols mainly originating from western Shandong Province, northern Anhui Province, northern Jiangxi Province, central Jiangsu Province, and the central YRD.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Jinping Ou, Qihou Hu, Chengzhi Xing, Yizhi Zhu, Jiaxuan Feng, Xiangguang Ji, Mingzhu Zhang, Xinqi Wang, Liyuan Li, Ting Liu, Bowen Chang, Qihua Li, Hao Yin, Cheng Liu
Summary: This study systematically investigates the vertical distribution characteristics of atmospheric components and health risk assessment in Chinese island cities. The results show that aerosols, NO2, and HCHO are primarily distributed below 1 km altitude and are influenced by high-altitude transfer. Different meteorological factors drive aerosols, NO2, and HCHO at different altitudes, and coastal cities in the Yangtze River Delta are identified as the main sources. The study also estimates the number of attributable cases of PM2.5 air pollution in Zhoushan City using an exposure-response function model.
Article
Engineering, Multidisciplinary
Cheng Liu, Chengzhi Xing, Qihou Hu, Qihua Li, Haoran Liu, Qianqian Hong, Wei Tan, Xiangguang Ji, Hua Lin, Chuan Lu, Jinan Lin, Hanyang Liu, Shaocong Wei, Jian Chen, Kunpeng Yang, Shuntian Wang, Ting Liu, Yujia Chen
Summary: With the 14th Five-Year Plan, the coordinated control of PM2.5 and O3 has become a major concern in China. The University of Science and Technology of China has established a nationwide hyperspectral remote sensing network to monitor the vertical distribution of PM2.5 and O3, providing valuable opportunities for their coordinated control.
Article
Environmental Sciences
Qianqian Hong, Cheng Liu, Qihou Hu, Chengzhi Xing, Wei Tan, Ting Liu, Jianguo Liu
Summary: This study presents the vertical distribution of SO2 in Hefei, East China based on ground-based MAX-DOAS measurements from March 2018 to February 2019. Different seasonal variations in SO2 accumulation or transport at different heights were observed, with consistent diurnal trends and influence of wind speed on SO2 concentrations at various altitudes.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2021)
Article
Environmental Sciences
Yongjoo Choi, Yugo Kanaya, Hisahiro Takashima, Hitoshi Irie, Kihong Park, Jihyo Chong
Summary: The study investigated long-term observations of tropospheric nitrogen dioxide in East Asia, with results showing good agreement between MAX-DOAS and OMI data in the summer but differences in the winter. The Theil-Sen slope indicated a reduction in NO2 at urban and remote sites, except for Gwangju, Korea. OMI satellite data revealed an increase in NO2 levels, suggesting caution in using satellite data for less polluted areas.
Article
Geosciences, Multidisciplinary
John Douros, Henk Eskes, Jos van Geffen, K. Folkert Boersma, Steven Compernolle, Gaia Pinardi, Anne-Marlene Blechschmidt, Vincent-Henri Peuch, Augustin Colette, Pepijn Veefkind
Summary: This article introduces the application of Sentinel-5P TROPOspheric Monitoring Instrument (TROPOMI) and Copernicus Atmosphere Monitoring Service (CAMS) in atmospheric quality forecasting. By comparing the observations from TROPOMI with the forecasts from CAMS, it is found that they agree well in summer but show significant discrepancies in winter. The article also discusses the use of profile information from the CAMS configuration of the ECMWF global model and the replacement of global configuration with regional configuration to improve the TROPOMI data product.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2023)
Article
Environmental Sciences
Feng Liu, Chengzhi Xing, Pinjie Su, Yifu Luo, Ting Zhao, Jiexiao Xue, Guohui Zhang, Sida Qin, Youtao Song, Naishun Bu
Summary: In northeastern China, the seasonal variations in NO2 VCDs are evident with higher values in the winter due to increased emissions and longer atmospheric transport. The diurnal variation of NO2 VCDs shows increases at 11:00 and decreases at 13:00, with the most obvious changes occurring in the winter and autumn. The contributions of local emissions and regional transport to NO2 VCDs vary in different seasons.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Tianyi Xu, Chengxin Zhang, Cheng Liu, Qihou Hu
Summary: This study characterized the temporal trends of PM2.5 and O-3 concentrations in four Chinese cities and quantified the contributions of meteorological factors and gas precursors using generalized additive models (GAMS). The analysis showed that PM2.5 variability is largely influenced by precursor gases, while O-3 variability is mainly affected by meteorological conditions. The impact of the COVID-19 lockdown on PM2.5 and O-3 concentrations was also evaluated, with a significant decrease in PM2.5 but an increasing trend in O-3 during the lockdown period.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Environmental Sciences
Yujia Chen, Cheng Liu, Wenjing Su, Qihou Hu, Chengxin Zhang, Haoran Liu, Hao Yin
Summary: In this study, we use satellite observations to assess anthropogenic VOC emission sources globally. Our findings highlight higher emissions in some Asian cities compared to Europe and America, as well as higher emissions in developing countries. We also observe a reduction in emissions during the COVID-19 pandemic in heavily polluted areas.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Xinhua Hong, Cheng Liu, Chengxin Zhang, Yuan Tian, Hongyu Wu, Hao Yin, Yizhi Zhu, Yafang Cheng
Summary: A warming climate is a key factor driving intensified wildfires globally. The unprecedented wildfires in Australia from November 2019 to February 2020 released a significant amount of heat, gases, and particles into the atmosphere. It was estimated that these wildfires emitted approximately 963 million tons of carbon dioxide (CO2) based on direct satellite measurements. This led to a 50-80 times increase in total CO2 emissions in Australia compared to similar seasons from 2014-2019. The excess CO2 from the wildfires offset almost half of the global anthropogenic CO2 emissions reduction from the COVID-19 pandemic in 2020. Additionally, the intense wildfires in December 2019 caused an additional positive radiative forcing of 1.48 watts per square meter in Australia and the surrounding areas, disrupting the global carbon cycle and hindering climate goals.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Xinhua Hong, Chengxin Zhang, Yuan Tian, Hongyu Wu, Yizhi Zhu, Cheng Liu
Summary: Crop residue burning in rural regions of China is a major source of biomass burning and contributes to significant atmospheric pollution. Using satellite and agricultural data, we created an inventory of agricultural fire emissions from 2016 to 2020, which revealed the effectiveness of geostationary satellite monitoring in accurately measuring actual burning emissions in China. Additionally, our study assessed the impact of field burning bans in China, emphasizing the need for continuous, long-term controls to effectively reduce emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Chengxin Zhang, Qihou Hu, Wenjing Su, Chengzhi Xing, Cheng Liu
Summary: By observing atmospheric nitrogen dioxide (NO2) concentrations, we assess the impact of war on human emission activities, particularly the recent large-scale war between Russia and Ukraine. Our study shows significant decreases in NO2 concentrations in most Ukrainian cities at the beginning of the war, while dramatic increases were observed in Russian cities outside the northern border. The machine learning model suggests that war-induced changes in anthropogenic emissions may account for 40% of the reduction in NO2 pollution for major cities such as Kyiv. Satellites provide a unique perspective on the atmospheric consequences of humanitarian disasters.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Multidisciplinary Sciences
Jie Wu, Chengxin Zhang, Qihou Hu, Wenjing Su, Sihan Liu, Daian You, Jiahua Teng, Shaohua Zhao, Pengfei Ma, Zhongting Wang, Chunyan Zhou, Wenming Shen, Cheng Liu
Summary: In September 2021, China successfully launched the Gaofen-5B satellite, promoting the development of self-directed remote sensing monitoring in the country. During the Beijing-Zhangjiakou Winter Olympics, satellite data was used to support air quality assurance. This study analyzed the distribution of NO2 pollution in Beijing and surrounding cities during the Winter Olympics and discussed the impact of meteorological conditions and emission control measures. The results showed a significant decrease in NO2 concentrations during the Winter Olympics, with emission controls having a stronger effect than meteorological factors.
CHINESE SCIENCE BULLETIN-CHINESE
(2023)
Article
Environmental Sciences
Yuanyun Gao, Shuntian Wang, Chengxin Zhang, Chengzhi Xing, Wei Tan, Hongyu Wu, Xinhan Niu, Cheng Liu
Summary: Optimizing urban form through planning and management can improve air quality and control NO2 pollution. This study assesses the interactions between urban forms and airborne NO2 pollution in different cities in the Yangtze River Delta region of China using machine learning and geographical regression models. The results show a strong correlation between urban fragmentation and NO2 pollution, highlighting the importance of customized urban landscape management strategies for mitigating air pollution.
ENVIRONMENTAL POLLUTION
(2023)
Article
Geriatrics & Gerontology
Tianma Xu, Ting-Ting Yeh, Kidman Yi Jer Ng, Nicole Wen Ru Wong, Verna Sock Juen Koh
Summary: This study aimed to determine the feasibility and effects of a multicomponent frailty management program (mFMP) in reducing frailty and increasing participation among frail community-living older adults. The results showed that the mFMP demonstrated its feasibility and exhibited a trend to facilitate personal behavioral changes postintervention.
JOURNAL OF AGING AND PHYSICAL ACTIVITY
(2023)
Article
Environmental Sciences
Bo Li, Cheng Liu, Qihou Hu, Mingzhai Sun, Chengxin Zhang, Yizhi Zhu, Ting Liu, Yike Guo, Gregory R. Carmichael, Meng Gao
Summary: Limitations in current PM2.5 monitoring affect air quality management and health risk assessment. Ground-based monitoring networks provide data in highly populated regions, but gaps exist in spatial coverage. Satellite-derived aerosol optical properties can complement ground-based monitoring, but are hindered by cloudy/hazy conditions or nighttime. In this study, a deep spatiotemporal neural network (ST-NN) is introduced to overcome these limitations and provide high-resolution and complete coverage of PM2.5 concentrations. Validation shows accurate results, and better spatiotemporal distributions will improve health studies and air quality predictions.
Article
Engineering, Environmental
Tianyi Xu, Chengxin Zhang, Jingkai Xue, Qihou Hu, Chengzhi Xing, Cheng Liu
Summary: This study presents an improved estimation of NOx emissions using the Geostationary Environmental Monitoring Spectrometer (GEMS) and characterizes the hourly NOx emissions over cities in East Asia. The study highlights the significant diurnal variations in NOx emissions and the role of geostationary satellite observations in informing emission control policies.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Environmental Sciences
Chengzhi Xing, Shiqi Xu, Yuhang Song, Cheng Liu, Yuhan Liu, Keding Lu, Wei Tan, Chengxin Zhang, Qihou Hu, Shanshan Wang, Hongyu Wu, Hua Lin
Summary: Ship-based MAX-DOAS measurements were conducted in the marginal seas of China to study the vertical profiles of aerosol, NO2, and HONO. Five hot spots with enhanced NO2 VCDs were observed in different regions. The study explored the impacts of RH, temperature, and aerosol on the heterogeneous reaction of NO2 to form HONO. It also provided insights into the distribution, transformation, and environmental effects of tropospheric HONO.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Spectroscopy
Liu Han-yang, Xing Cheng-zhi, Ji Xiang-guang, Lin Ji-nan, Zhao Chun-hui, Wei Shao-cong, Zhang Cheng-xin, Liu Hao-ran, Tan Wei, Liu Cheng
Summary: This study investigates the vertical distribution and seasonal variation characteristics of aerosols, NO2, and SO2 on Juehua Island from October 2020 to June 2021. The results reveal the potential sources of pollutants and show that pollutant concentrations are higher in autumn and winter compared to spring and summer. High concentrations of NO2 and SO2 mainly occur at heights of 0-400 meters, influenced by industrial and vehicle emissions in the Beijing-Tianjin-Hebei region and ship emissions in Liaodong Bay. Aerosols mainly originate from biomass combustion transport in Shandong.
SPECTROSCOPY AND SPECTRAL ANALYSIS
(2023)
Article
Environmental Sciences
Yuhang Song, Chengzhi Xing, Cheng Liu, Jinan Lin, Hongyu Wu, Ting Liu, Hua Lin, Chengxin Zhang, Wei Tan, Xiangguang Ji, Haoran Liu, Qihua Li
Summary: This study retrieved the vertical profiles of aerosols, nitrogen dioxide, and formaldehyde using MAX-DOAS technique and analyzed the typical pollutant transport phenomena in North China Plain and Yangtze River Delta. The main transport layers of pollutants varied in different regions, and the back-and-forth transboundary transport between the two regions was observed.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Green & Sustainable Science & Technology
Xiaohan Wang, Chengxin Zhang, Yuanyun Gao, Xiangguang Ji, Wenjing Su, Cheng Liu
Summary: This study analyzes the variations of marine atmospheric NO2 using satellite observations, focusing on the COVID-19 pandemic and geopolitical crises. The results reveal the significant emissions of NO2 from maritime shipping and the lack of emission reduction in rapidly developing ports. Furthermore, the study shows that Emission Control Area policies have effectively reduced NO2 concentrations in Chinese coastal ports.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Yikai Li, Chengzhi Xing, Haochen Peng, Yuhang Song, Chengxin Zhang, Jingkai Xue, Xinhan Niu, Cheng Liu
Summary: This study conducted a systematic ground validation of GEMS NO2 data in China for the first time. The results showed a high level of accuracy for the data in China. The study also found that the distribution of NO2 was closely related to terrain and observed significant underestimation issues with TROPOMI. Furthermore, using a combination of MAX-DOAS and GEMS data, the study revealed the significant impact of regional and cross-regional transport on NO2 concentrations. The joint observations of GEMS and MAX-DOAS provide reliable data support for NO2 research and control in China, contributing to environmental protection and sustainable development.
SCIENCE OF THE TOTAL ENVIRONMENT
(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)
