Article
Environmental Sciences
Syuichi Itahashi, Hitoshi Irie, Hikari Shimadera, Satoru Chatani
Summary: In this study, satellite measurements of formaldehyde (HCHO) and nitrogen dioxide (NO2) were analyzed to assess the sensitivity to tropospheric ozone pollution in East Asia. The findings show an increase in NO2 levels over China during the first 5-year period, followed by a decrease after 2010. In contrast, NO2 levels in South Korea and Japan displayed a continuous decline over 15 years. Additionally, there was a significant increase in HCHO levels in East Asia from 2015 to 2019. This indicates a shift towards a nitrogen oxide (NOx)-sensitive regime in the region. The study also suggests that the relative importance of biogenic non-methane volatile organic compound (NMVOC) sources has been increasing, potentially influencing the ozone-sensitive regime in East Asia.
Article
Environmental Sciences
Margaret R. Marvin, Paul Palmer, Barry G. Latter, Richard Siddans, Brian J. Kerridge, Mohd Talib Latif, Md Firoz Khan
Summary: Mainland and maritime Southeast Asia is home to over 655 million people, with intense biomass burning activities leading to increased air pollution levels. The GEOS-Chem model shows a correlation between biomass burning and high ozone levels, resulting in approximately 420 premature deaths during the two burning seasons. Despite some model bias, hazardous ozone levels are confirmed by surface observations.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Geosciences, Multidisciplinary
Xiaolin Wang, Tzung-May Fu, Lin Zhang, Xiao Lu, Xiong Liu, Teerachai Amnuaylojaroen, Mohd Talib Latif, Yaping Ma, Lijuan Zhang, Xu Feng, Lei Zhu, Huizhong Shen, Xin Yang
Summary: By combining observations and simulations, we assessed the trends of tropospheric ozone over Southeast Asia from 2005 to 2016. The surface ozone levels in Peninsular Southeast Asia showed rapid increases, primarily driven by local emissions, while the Maritime Continents experienced relatively slower increases. It is necessary to quantify Southeast Asian emissions more accurately to improve air quality management.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Xinyi Fu, Dongsheng Chen, Xiaotong Wang, Yue Li, Jianlei Lang, Ying Zhou, Xiurui Guo
Summary: In this study, the impacts of ship emissions on ozone (O3) concentration in China were evaluated using the WRF model, CMAQ model, and IPR module. Ship emissions were found to either increase or decrease O3 concentrations, with varying effects in different seasons and regions. This study provides valuable insights into the impacts of ship emissions on O3 in China, which can inform the development of environmental policies.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Mingshuai Zhang, Chun Zhao, Yuhan Yang, Qiuyan Du, Yonglin Shen, Shengfu Lin, Dasa Gu, Wenjing Su, Cheng Liu
Summary: Current air quality and climate models have large uncertainties in simulating biogenic volatile organic compounds (BVOCs), primarily due to differences in the treatment of physical and chemical processes and errors in vegetation type specification. The study found that different versions of the model exhibit varying performance in simulating BVOCs emissions, with MEGAN v3.0 showing the largest amount of biogenic isoprene emissions over eastern China. Factors such as temperature and leaf area index (LAI) play a significant role in the seasonal variation of BVOC emissions.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2021)
Article
Environmental Sciences
Pierre Sicard, Paola Crippa, Alessandra De Marco, Stefano Castruccio, Paolo Giani, Juan Cuesta, Elena Paoletti, Zhaozhong Feng, Alessandro Anav
Summary: The study used the WRF-Chem model to simulate the spatial and seasonal variability of main physical and chemical variables over Asia for the year 2015. Results showed good representation of atmospheric composition but large discrepancies in nitrogen and carbon dioxide content. Meteorological variables exhibited low to moderate seasonal biases.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Yongjian Huang, Jianming Wei, Jiupin Jin, Zhiwei Zhou, Qianrong Gu
Summary: This study estimated anthropogenic carbon monoxide (CO) emissions in western Europe during four consecutive winter seasons using an inversion approach. The results showed that the surface-level observations from the MOPITT instrument contained a similar amount of information as the other levels. The inverted CO fluxes were in good agreement with the United Nations Framework Convention on Climate Change (UNFCCC) inventories. However, the experimental results of the winter season of 2017 were affected by high boundary conditions.
Article
Environmental Sciences
Pengfei Wang, Peng Wang, Kaiyu Chen, Jun Du, Hongliang Zhang
Summary: Ground-level ozone is a growing concern as an air pollutant due to its detrimental effects on human health and vegetation growth. Meteorological conditions play a crucial role in the formation, diffusion, transformation, and transport of ozone in the atmosphere. This study demonstrated significant improvements in ozone prediction accuracy by using ensemble meteorological inputs compared to traditional single meteorology inputs in chemical transport models.
Article
Meteorology & Atmospheric Sciences
Si-Wan Kim, Brian C. McDonald, Seunghwan Seo, Kyoung-Min Kim, Michael Trainer
Summary: Ozone in the urban atmosphere, mainly derived from fossil fuel combustions and volatile chemical products, has a detrimental impact on the ecosystem and human health. The Los Angeles Basin, a classic example of an urban region with long-standing ozone pollution, has seen declines in ozone and precursor concentrations over the past half century due to pollution controls. However, since 2000, the ozone design value has not been able to fully reach the air quality standard set by the EPA. Our study reveals that the area is undergoing a significant transition in photochemistry towards lower ozone concentrations and suggests that further reductions of NOx emissions can lead to continued improvement of ozone pollution.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Environmental Sciences
Wenhao Wang, Xiong Liu, Jianzhao Bi, Yang Liu
Summary: Estimating ground-level ozone concentrations using satellite data and machine learning models can provide valuable insights into the spatial and temporal variations of ozone levels. The study in California revealed high ozone levels in suburban Los Angeles and Southern California, while lower levels were observed in the Bay Area and along the Pacific coast.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Environmental Sciences
Bo Li, Qihou Hu, Meng Gao, Ting Liu, Chengxin Zhang, Cheng Liu
Summary: The accurate measurement of air gases concentrations is essential for air quality management and protecting human health during travel. A physical informed deep learning model was developed to combine traditional atmospheric chemical transport models and data-based deep learning models. This model utilizes multiple sources of observation data to improve the accuracy and spatial resolution of atmospheric pollution gases concentrations in central and eastern China. By incorporating ground-based and satellite observations, the model enhances the verification metrics and overcomes the limitations of cloud coverage.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Lei Shu, Lei Zhu, Juseon Bak, Peter Zoogman, Han Han, Song Liu, Xicheng Li, Shuai Sun, Juan Li, Yuyang Chen, Dongchuan Pu, Xiaoxing Zuo, Weitao Fu, Xin Yang, Tzung-May Fu
Summary: This study investigates the impact of multiple ozone observations from GEMS geostationary satellite, LEO satellite, and surface networks on summertime ozone simulations through data assimilation. The results show that data assimilation improves the monitoring of surface ozone exceedance, spatial patterns, and diurnal variations, and reduces regional mean negative bias and root-mean-square error (RMSE). The joint assimilation of GEMS and surface observations performs the best, but GEMS may mask the added value of LEO measurements, which are crucial for constraining surface and upper tropospheric ozone simulations when observations from other platforms are not sufficient.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Huimin Li, Yang Yang, Jianbing Jin, Hailong Wang, Ke Li, Pinya Wang, Hong Liao
Summary: This study quantifies the impacts of future climate change on ozone (O3) pollution in Asia and predicts near-surface O3 concentrations from 2020 to 2100. The results show that under high-forcing scenarios, O3 concentrations will increase by 5%-20% in South China, Southeast Asia, and South India, and by less than 10% in North China and the Gangetic Plains. Furthermore, the study finds that summertime O3 pollution in eastern China will expand from North China to South China and extend into the cold season in a warmer future.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Analytical
Linyan Bai, Jianzhong Feng, Ziwei Li, Chunming Han, Fuli Yan, Yixing Ding
Summary: In this study, the spatiotemporal dynamic characteristics of surface ozone concentration and its pollution levels were explored in the Beijing-Tianjin-Tangshan region. The study revealed a significant spatial difference in ozone levels, with an increasing trend observed in Beijing and Tianjin. The study also found that high temperature, long sunshine duration, low atmospheric pressure, weak wind velocity, and certain relative humidity levels contribute to high-concentration ozone pollution.
Article
Environmental Sciences
Yuxi Wang, Le Cao, Tong Zhang, Haijiang Kong
Summary: The study used the WRF-Chem model to reproduce the ozone and PM2.5 pollution in Fenwei Plain from May 20th to May 29th, 2015. Although there were deviations between the simulation results and observed data, the model generally captured the trend of pollutants and the deviations were acceptable. The WRF-Chem model performed better in simulating ozone than PM2.5. Ozone pollution mainly occurred north of Fenwei Plain due to wind patterns and ozone production chemistry, while PM2.5 pollution occurred at night and was concentrated in the Fenwei Plain.
Article
Biochemistry & Molecular Biology
Sofia Ali Syed, Muhammad Asif Qureshi, Saeed Khan, Rajesh Kumar, Iqbal A. Muhammad Khyani, Bilal Ahmed Khan, Jawad Safdar
Summary: Oral squamous cell carcinomas are a major healthcare burden in Asian countries, especially in Pakistan. Treatment options are limited, making it essential to investigate the inflammatory environment of OSCC and explore immunotherapeutic approaches. This study focuses on innate lymphoid cells and associated cytokines in OSCC, providing new insights into the molecular circuitry and tumor niche for the development of novel diagnostic and therapeutic strategies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Environmental Sciences
Preeti Gunwani, Gaurav Govardhan, Chinmay Jena, Prafull Yadav, Santosh Kulkarni, Sreyashi Debnath, Pooja V. Pawar, Manoj Khare, Akshara Kaginalkar, Rajesh Kumar, Sandeep Wagh, Dilip Chate, Sachin D. Ghude
Summary: This study investigates the sensitivity of PM2.5 predictions to different boundary conditions and planetary boundary layer (PBL) parameterization schemes using the WRF-Chem model. The results show that the model performs best when using initial/boundary conditions from ERA and GDAS datasets, and when using local PBL parameterization schemes MYJ and MYNN. It was found that PM2.5 concentrations are less sensitive to changes in boundary conditions but more sensitive to changes in the PBL scheme.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Polymer Science
Shere Afgan, Krishtan Pal, Arti Srivastava, Koushik Nandy, Paramjeet Yadav, Sheetal Jaiswal, Rajan Singh, Rakesh K. Singh, Rajesh Kumar
Summary: The development of amino acid-based polymers with unique properties and structures has led to advances in biomedical applications such as biochemical sensing and controlled release of drugs. In this study, poly(N-vinylpyrrolidone) (PNVP) and its block copolymer PNVP-b-PNALP were synthesized using a xanthate. The characterization and toxicity evaluation of these polymers were performed using various techniques, and it was found that the polymers were non-toxic to macrophages and cancer cells.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Meteorology & Atmospheric Sciences
Masih Eghdami, Timothy W. Juliano, Pedro A. Jimenez, Branko Kosovic, Marc Castellnou, Rajesh Kumar, Jordi Vila-Guerau de Arellano
Summary: Smoke from wildfires or burning biomass directly affects air quality and weather through modulating cloud microphysics and radiation. A simple wildfire emission coupling of black carbon (BC) and organic carbon (OC) with microphysics was implemented using the Weather Research and Forecasting model's fire module. The influence of background conditions and interactions between atmospheric and fire processes such as fire smoke, ambient moisture, and latent heat release on the formation and evolution of pyroconvective clouds were investigated through simulations inspired by observational data from a specific fire event in Spain.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2023)
Article
Green & Sustainable Science & Technology
Sandeep Gawdiya, Dinesh Kumar, Yashbir S. S. Shivay, Arti Bhatia, Shweta Mehrotra, Mandapelli Sharath Chandra, Anita Kumawat, Rajesh Kumar, Adam H. H. Price, Nandula Raghuram, Himanshu Pathak, Mark A. A. Sutton
Summary: This study aimed to screen rice genotypes with high nitrogen use efficiency under different nitrogen fertilization treatments. The results showed that applying the recommended amount of nitrogen yielded the highest panicles, filled grains panicle, leaf area index, tillers, grain yield, and harvest index. The N-60 and N-120 treatments had a higher effect compared to the N-0 treatment.
Review
Environmental Sciences
Sipra Nayak, Gunanidhi Sahoo, Ipsita Iswari Das, Aman Kumar Mohanty, Rajesh Kumar, Lakshman Sahoo, Jitendra Kumar Sundaray
Summary: Poly- and perfluoroalkyl substances (PFASs) are anthropogenic chemicals with a fluorinated carbon chain and have gained global attention due to their durability, bioaccumulation potential, and negative impacts on living organisms. The negative impacts of PFASs on aquatic ecosystems are concerning due to their widespread use and constant leakage into the water environment. PFASs can alter the bioaccumulation and toxicity of certain substances, causing a variety of negative consequences in aquatic organisms. PFAS bioaccumulation affects the composition of the intestinal microbiota, which is related to the well-being of the host. PFASs act as endocrine disruptors and can result in dysbiosis of gut microbes and other health repercussions.
Article
Environmental Sciences
Manisha Mehra, Sujan Shrestha, A. P. Krishnakumar, Meghan Guagenti, Claire E. Moffett, Sarah Guberman VerPloeg, Melinda A. Coogan, Mukesh Rai, Rajesh Kumar, Elisabeth Andrews, James P. Sherman, James H. Flynn Iii, Sascha Usenko, Rebecca J. Sheesley
Summary: In June 2020, record levels of Saharan dust were transported across the Atlantic Ocean, impacting air quality in the Caribbean Basin and the United States. Satellite images and ground-based monitoring stations were used to observe the transport and surface impacts of the Saharan dust. The study characterized the Saharan dust event using comprehensive satellite observations and in-situ measurements.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Sreyashi Debnath, Gaurav Govardhan, Subodh Kumar Saha, Anupam Hazra, Samir Pohkrel, Chinmay Jena, Rajesh Kumar, Sachin D. Ghude
Summary: This study investigates the impact of reduced dust emissions on the intensity of monsoon rainfall over the Indian region. The results show that the reduction in dust emissions significantly alters the spatial distribution of rainfall, with increased rainfall over the Bay of Bengal and eastern coastal regions, and decreased rainfall over the Indo-Gangetic Plain and parts of Central India.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Amir H. Souri, Rajesh Kumar, Heesung Chong, Maryam Golbazi, K. Emma Knowland, Jeffrey Geddes, Matthew S. Johnson
Summary: This study investigates the impact of sea breeze circulation on the vertical stratification of formaldehyde (HCHO) concentrations using a regional atmospheric chemical transport model for three stagnant days in June 2018 on the east coast of the U.S. The results show that the thermal contrast between the Atlantic Ocean and terrestrial regions leads to monsoon-like flow, carrying clean marine air masses over the land. In contrast, polluted air masses prevail in higher altitudes. The decoupling pattern of HCHO concentrations with altitude and its negative correlation with surface concentrations are evident. The study highlights the importance of accurate representation of sea-land breezes in atmospheric models for reliable satellite-derived trace gas retrievals and air quality applications. Rating: 7 out of 10.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Agronomy
Rajesh Kumar, Randhir Kumar, Bishun Deo Prasad, Jitesh Kumar, Bahadur Singh Bamaniya
Summary: Genetic characterization of 24 bottle gourd genotypes from Eastern India was conducted using morphological traits and ISSR markers. The study revealed a high level of genetic diversity and identified BRBG-65 as a promising cultivar. Fruit weight, number of fruits per vine, and marketable yield per vine showed significant associations with yield per hectare. The findings provide valuable insights for further genetic analysis and breeding programs.
GENETIC RESOURCES AND CROP EVOLUTION
(2023)
Article
Environmental Sciences
Babita Kumari, Ghanshyam S. Chauhan, Sunita Ranote, Pooja Jamwal, Rajesh Kumar, Kiran Kumar, Sandeep Chauhan
Summary: In this study, the chemical modification of dried and fallen pine needles using KMnO4 oxidation was conducted. The oxidized pine needles showed selective adsorption properties towards cationic dyes. Various characterization techniques were employed to confirm the successful synthesis of the adsorbent. The adsorbent exhibited high removal efficiencies for cationic dyes and satisfactory regeneration and recyclability.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2023)
Article
Environmental Sciences
Seerat Sultan, Shruti Singh, Rajesh Kumar, Showkat A. Malik, Jagvir Singh
Summary: This study aimed to evaluate the water quality of Wulur Lake on the Indian subcontinent, considering spatiotemporal fluctuations in physiochemical parameters. Water samples were collected from five locations over three years. The results showed that the lake's water quality has deteriorated due to increased macrophyte growth. Correlation analysis revealed significant relationships between various parameters, and principal component analysis demonstrated a strong match among physiochemical parameters. The lake is becoming eutrophic, and proper conservation measures are needed to prevent further deterioration.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Environmental Sciences
Pooja V. Pawar, Sachin D. Ghude, Gaurav Govardhan, Prodip Acharja, Rachana Kulkarni, Rajesh Kumar, Baerbel Sinha, Vinayak Sinha, Chinmay Jena, Preeti Gunwani, Tapan Kumar Adhya, Eiko Nemitz, Mark A. Sutton
Summary: The Winter Fog Experiment (WiFEX) was conducted at Indira Gandhi International Airport in Delhi, India, during the winter of 2017-2018 to study ammonia (NH3) and its derivatives. High-temporal-resolution simulation of NH3 using the WRF-Chem model and measurements from the MARGA instrument were compared. The simulation showed higher NH3 concentrations and lower NH4+ concentrations than the measurements, but adding HCl/Cl- chemistry improved the agreement between the simulation and measurements.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Meteorology & Atmospheric Sciences
Prajjwal Rawat, Manish Naja, Evan Fishbein, Pradeep K. Thapliyal, Rajesh Kumar, Piyush Bhardwaj, Aditya Jaiswal, Sugriva N. Tiwari, Sethuraman Venkataramani, Shyam Lal
Summary: This study evaluates the accuracy of the Atmospheric Infrared Sounder (AIRS) version 6 ozone profiles and total column ozone over the central Himalayas using data from 242 ozonesondes. The results show that AIRS has minor differences from ozonesondes in the lower and middle troposphere and stratosphere with underestimations of less than 20%. However, in the upper troposphere and lower stratosphere, AIRS overestimates the ozone magnitude considerably.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2023)
Article
Environmental Sciences
Maryam Golbazi, Stefano Alessandrini, Rajesh Kumar, Paddy McCarthy, Patrick C. Campbell, Piyush Bhardwaj, Cenlin He, Jeffery McQueen
Summary: Air quality forecasting is crucial for decision-making and mitigating the impacts of air pollution and wildfires. However, forecast errors limit its effectiveness. This study utilizes the CMAQ model and introduces the AnEn method and new predictors to enhance the accuracy of air quality forecasts, particularly during wildfire events.
ATMOSPHERIC ENVIRONMENT
(2024)
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)