Article
Engineering, Environmental
Elena Austin, Jianbang Xiang, Timothy R. Gould, Jeffry H. Shirai, Sukyong Yun, Michael G. Yost, Timothy Larson, Edmund Seto
Summary: The study aimed to analyze the air quality impacts of aircraft traffic on communities near an international airport. It found that ultrafine particles were associated with both roadway traffic and aircraft sources, with key differences in particle size distribution and black carbon concentration between the two sources.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Meteorology & Atmospheric Sciences
Chuan He, Yan Yin, Wuyi Wang, Kui Chen, Rong Mai, Hui Jiang, Xin Zhang, Chenwei Fang
Summary: Airborne measurements were conducted to study the vertical distribution of ice nucleating particles (INPs) over the Northern China Plain, revealing that aerosols sampled at higher altitudes have better ice nucleation capacity. Additionally, a strong correlation was found between INPs sampled in low humidity areas and aerosol particles larger than 0.5 μm in diameter.
ATMOSPHERIC RESEARCH
(2021)
Article
Environmental Sciences
Jiaxin Wu, Yan Yin, Kui Chen, Chuan He, Hui Jiang, Bohua Zheng, Bin Li, Yuanyuan Li, Yiying Lv
Summary: The concentration of ice nucleating particles (INPs) in the cloud layer has a greater impact on cloud processes than at the ground level. Observations of the vertical distribution of INPs in different regions of China reveal the important role of meteorological conditions in regulating the vertical distribution of INPs. An inversion layer inhibits the vertical transport of aerosols, leading to variations in INP concentration at different heights. INPs in the free atmosphere primarily originate from fine-mode aerosol particles transported long distances by westerly winds and do not significantly change with height. Air masses in the planetary boundary layer (PBL) are short-range transported, resulting in higher INP concentrations compared to those above the PBL.
Article
Environmental Sciences
Ruofan Mao, Junlin Song, Pengcheng Yan, Zhuozhi Ouyang, Renren Wu, Shasha Liu, Xuetao Guo
Summary: An assessment of microplastics concentrations in sediment samples from Wuliangsuhai Lake revealed variations in abundance, type, and size of microplastics in different functional areas, with a clear decreasing trend of microplastics abundance with increased sediment depth. This suggests that estimation of global microplastic storage in sediments may be underestimated if only surface sediments are considered.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Nobuyuki Takegawa, Anna Nagasaki, Akihiro Fushimi, Yuji Fujitani, Yoshiko Murashima, Hiromu Sakurai
Summary: We conducted field measurements and laboratory evaluations to characterize the physical and chemical properties of aircraft exhaust ultrafine particles near Narita International Airport. The results show that the volatility of aircraft exhaust UFPs is closely related to particle size and temperature.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Meteorology & Atmospheric Sciences
Jiujiang Sheng, Delong Zhao, Fei Wang, Yuanmou Du, Ping Tian, Wei Xiao, Wei Zhou, Xia Li, Mengyu Huang, Deping Ding
Summary: Microphysical characteristics of continental cumulus in a relatively remote area of Northern China were studied using the King Air aircraft equipped with cloud probes. The research found that cloud droplet concentration and effective diameter varied with altitude, and the cloud droplet size spectra broadened with increasing altitude. High concentrations of drizzle drops and ice particles were observed near the cloud top, indicating active redistribution and collision/coalescence processes of cloud particles. Further aircraft measurements, particularly across the cloud cores, are needed to better understand the cloud properties and microphysics of well-developed continental cumulus at different stages.
ATMOSPHERIC RESEARCH
(2022)
Article
Environmental Sciences
Zeyan Zhou, Panyue Zhang, Guangming Zhang, Siqi Wang, Yajing Cai, Hongjie Wang
Summary: The study on the vertical microplastic distribution in estuary sediment of Fuhe River in northern China revealed that microplastic content decreased with depth, with the highest content in the topmost sediment layer. The smaller particle size and higher proportion of colored microplastics were found in deeper sediment layers. The spatial distribution of microplastics in sediments was closely related to human activities, with higher content in areas with more intense human activities.
Article
Environmental Sciences
Susan Michaelis, Tristan Loraine, C. V. Howard
Summary: The study investigates the health risks of airline crew members exposed to engine oil fumes, suggesting that particulate exposure may be one of the reasons for the adverse health effects reported.
ENVIRONMENTAL HEALTH
(2021)
Article
Environmental Sciences
Chloe S. Chung, Kevin J. Lane, Flannery Black-Ingersoll, Eric Kolaczyk, Claire Schollaert, Sijia Li, Matthew C. Simon, Jonathan I. Levy
Summary: Aircraft emissions, especially during arrival periods, contribute to elevated levels of ultrafine particle concentration (PNC) in communities near airports. This study evaluated the impact of arrival aircraft on PNC across six study sites near Boston Logan International Airport. The findings showed that PNC was higher at sites closer to the airport and during hours with high aircraft activity, with arrival aircraft accounting for up to 50% of the total PNC at the nearest monitoring site. This highlights the intermittent but significant contributions of arrival aircraft to ambient PNC.
ENVIRONMENTAL RESEARCH
(2023)
Article
Oceanography
Weiwei Fang, Bingxu Geng, Peng Xiu
Summary: This study investigated the effects of typhoons on phytoplankton in the coastal area of the South China Sea. Field observations and a physical-biogeochemical model were used to examine the changes in chlorophyll-a concentration after Typhoon Merbok. The results showed that typhoons can cause changes in the bottom/subsurface chlorophyll maximum, and different mechanisms play a role in different regions and water layers. This study contributes to the understanding of the dynamics of marine ecosystems in response to typhoons in coastal areas.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Environmental Sciences
Xin Zhang, Bianhong Zhou, Zhiyu Li, Yue Lin, Lijuan Li, Yuemei Han
Summary: This study continuously measured atmospheric particulate matter (PM) in an urban area in Baoji city, northern China, in 2018 to investigate its seasonal distribution characteristics. The findings revealed that coarse PM (PM2.5-10) was more prevalent in spring due to regional dust transport. Winter saw a substantial increase in the number and mass concentrations of fine PM (PM2.5), possibly due to enhanced secondary production processes and coal combustion. The study highlighted the influence of precursor gaseous pollutants and meteorology on PM distributions, with fine PM being more strongly associated with gas pollutants than coarse PM.
Article
Environmental Sciences
Chuan He, Yan Yin, Yi Huang, Xiang Kuang, Yi Cui, Kui Chen, Hui Jiang, Alexei Kiselev, Ottmar Moehler, Jann Schrod
Summary: Ice-nucleating particles (INPs) are crucial for cloud freezing processes in the atmosphere. We conducted two aircraft observations in China to investigate the vertical distribution and characteristics of INPs. The results showed that INPs were mainly concentrated within the boundary layer before the cold front passage, with their concentration decreasing with height. However, after the cold front passage, the highest INP concentration appeared at higher altitudes. The cold front passage also weakened the correlations between the concentrations of different-sized aerosol particles and INPs. Mineral dust was the main source of INPs, and increased aging or coating of INPs was introduced by the cold front during long-distance transport. Larger aerosols (>1 μm) were the major contributors to INPs at high altitudes.
Article
Environmental Sciences
Li-Zi Lin, Meng Gao, Xiang Xiao, Luke D. Knibbs, Lidia Morawska, Shyamali C. Dharmage, Joachim Heinrich, Bin Jalaludin, Shao Lin, Yuming Guo, Shu-Li Xu, Qi-Zhen Wu, Gongbo Chen, Bo-Yi Yang, Xiao-Wen Zeng, Yunjiang Yu, Li-Wen Hu, Guang-Hui Dong
Summary: The study found that long-term exposure to ultrafine particles was associated with elevated blood pressure and increased risk of hypertension, especially in women and overweight/obese participants.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Engineering, Environmental
Xiaoxiao Li, Yuyang Li, Michael J. Lawler, Jiming Hao, James N. Smith, Jingkun Jiang
Summary: The study modified a TDCIMS to measure the composition of UFPs in urban Beijing without the use of radioactive materials. The results showed that UFPs in urban areas contain more nitrogen and sulfur-containing compounds compared to those in forest and marine sites.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Meteorology & Atmospheric Sciences
Brian Stacey, Roy M. Harrison, Francis D. Pope
Summary: This study found high concentrations of ultrafine particles (UFP) at Heathrow Airport in London, exceeding the exposure limits set by the World Health Organization (WHO). Departing aircraft, particularly larger ones, were found to have the highest UFP emission rates. The number of passengers carried also influenced emission rates per passenger. Calculated emission rates were higher than literature values due to the inclusion of condensable particles in the measurements. The study suggests that UFP concentrations beyond the airport boundary may also be of concern, and assessing population exposure near airports will become increasingly important in the future.
NPJ CLIMATE AND ATMOSPHERIC SCIENCE
(2023)
Article
Environmental Sciences
Kojiro Shimada, Xiaoyang Yang, Yushi Araki, Ayako Yoshino, Akinori Takami, Xuan Chen, Fan Meng, Shiro Hatakeyama
JOURNAL OF ATMOSPHERIC CHEMISTRY
(2018)
Article
Environmental Sciences
Sathiyamurthi Ramasamy, Yoshihide Nagai, Nobuhiro Takeuchi, Shohei Yamasaki, Koki Shoji, Akira Ida, Charlotte Jones, Hiroshi Tsurumaru, Yuhi Suzuki, Ayako Yoshino, Kojiro Shimada, Yoshihiro Nakashima, Shungo Kato, Shiro Hatakeyama, Kazuhide Matsuda, Yoshizumi Kajii
ATMOSPHERIC ENVIRONMENT
(2018)
Article
Chemistry, Analytical
Ryuichi Wada, Yasuhiro Sadanaga, Shungo Kato, Naoya Katsumi, Hiroshi Okochi, Yoko Iwamoto, Kazuhiko Miura, Hiroshi Kobayashi, Masashi Kamogawa, Jun Matsumoto, Seiichiro Yonemura, Yutaka Matsumi, Mizuo Kajino, Shiro Hatakeyama
Article
Environmental Sciences
Qingyu Zhang, Jiaoyu Liu, Youjiang He, Jiaying Yang, Jian Gao, Houfeng Liu, Wei Tang, Yizhen Chen, Wenhao Fan, Xuan Chen, Fahe Chai, Shiro Hatakeyama
JOURNAL OF ENVIRONMENTAL SCIENCES
(2018)
Article
Meteorology & Atmospheric Sciences
Sheng-Hsiang Wang, Ruo-Ya Hung, Neng-Huei Lin, Alvaro Gomez-Losada, Jose C. M. Pires, Kojiro Shimada, Shiro Hatakeyama, Akinori Takami
ATMOSPHERIC RESEARCH
(2020)
Article
Environmental Sciences
Kojiro Shimada, Manatsu Mizukoshi, Chak K. Chan, Yong Pyo Kim, Neng-Huei Lin, Kazuhide Matsuda, Syuichi Itahashi, Yoshihiro Nakashima, Shungo Kato, Shiro Hatakeyama
Summary: The study assessed the contribution of transboundary air pollutants transported from China to Tokyo using the Pb-(0.5<1)/Cu-(2.5<10) index. Results showed that the western part of Japan is affected more by these pollutants than the eastern part. The main source of Cu was identified as braking abrasion from cars at a local scale.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Syuichi Itahashi, Shiro Hatakeyama, Kojiro Shimada, Akinori Takami
AEROSOL AND AIR QUALITY RESEARCH
(2019)
Article
Environmental Sciences
Lu Yang, Ning Tang, Atsushi Matsuki, Akinori Takami, Shiro Hatakeyama, Naoki Kaneyasu, Edward G. Nagato, Kei Sato, Ayako Yoshino, Kazuichi Hayakawa
ASIAN JOURNAL OF ATMOSPHERIC ENVIRONMENT
(2018)
Article
Environmental Sciences
Taichi Sugiyama, Kojiro Shimada, Kaori Miura, Neng-Huei Lin, Yong Pyo Kim, Chak K. Chan, Akinori Takami, Shiro Hatakeyama
AEROSOL AND AIR QUALITY RESEARCH
(2017)
Article
Environmental Sciences
Yuta Taniguchi, Kojiro Shimada, Akinori Takami, Neng-Huei Lin, Chak K. Chan, Yong Pyo Kim, Shiro Hatakeyama
AEROSOL AND AIR QUALITY RESEARCH
(2017)
Article
Environmental Sciences
Shiori Tatsuta, Kojiro Shimada, Chak K. Chan, Yong Pyo Kim, Neng-Huei Lin, Akinori Takami, Shiro Hatakeyama
AEROSOL AND AIR QUALITY RESEARCH
(2017)
Article
Environmental Sciences
Mingfu Cai, Haobo Tan, Chak K. Chan, Michihiro Mochida, Shiro Hatakeyama, Yutaka Kondo, Misha I. Schurman, Hanbing Xu, Fei Li, Kojiro Shimada, Liu Li, Yange Deng, Hikari Yai, Atsushi Matsuki, Yiming Qin, Jun Zhao
AEROSOL AND AIR QUALITY RESEARCH
(2017)
Article
Environmental Sciences
Syuichi Itahashi, Shiro Hatakeyama, Kojiro Shimada, Shiori Tatsuta, Yuta Taniguchi, Chak K. Chan, Yong Pyo Kim, Neng-Huei Lin, Akinori Takami
AEROSOL AND AIR QUALITY RESEARCH
(2017)
Article
Environmental Sciences
Chang-Feng Ou-Yang, Chih-Chung Chang, Jia-Lin Wang, Kojiro Shimada, Shiro Hatakeyama, Shungo Kato, Jia-Yang Chiu, Guey-Rong Sheu, Neng-Huei Lin
AEROSOL AND AIR QUALITY RESEARCH
(2017)
Article
Environmental Sciences
Shantanu Kumar Pani, Chung-Te Lee, Charles C. -K. Chou, Kojiro Shimada, Shiro Hatakeyama, Akinori Takami, Sheng-Hsiang Wang, Neng-Huei Lin
AEROSOL AND AIR QUALITY RESEARCH
(2017)
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)
