-
Human pulmonary cytotoxicity of vehicular derived PM2.5: A study from three characterized tunnels Atmos. Environ. (IF 5.0) Pub Date : 2024-03-25 Xinyi Niu, Jinjin Yu, Ningning Zhang, Jian Sun, Kin-Fai Ho, Zhenxing Shen, Yu Huang, Junji Cao
-
Observation of ozone deposition flux and its contribution to stomatal uptake over a winter wheat field in eastern China Atmos. Environ. (IF 5.0) Pub Date : 2024-03-25 Hui Zhao, Jing Huang, Youfei Zheng
-
Update of Air Quality Health Index (AQHI) and harmonization of health protection and climate mitigation Atmos. Environ. (IF 5.0) Pub Date : 2024-03-22 Kimberly Tasha Jiayi Tang, Changqing Lin, Zhe Wang, Sik Wing Pang, Tze-Wai Wong, Ignatius Tak Sun Yu, Wallace Wai Yip Fung, Md Shakhaoat Hossain, Alexis K.H. Lau
Hong Kong has used a risk-based Air Quality Health Index (AQHI) system for nearly a decade, which aggregates hospitalization risks associated with short-term exposure to pollutants. Serving as an air pollution risk communication tool, it keeps the public informed about the current air quality, anchoring around the World Health Organization's (WHO) 2005 Air Quality Guidelines (AQGs). Given the WHO's
-
A comprehensive assessment of ions in snow and ice cores based on global observational data Atmos. Environ. (IF 5.0) Pub Date : 2024-03-21 Xuejing Li, Yang Chen, Shirui Yan, Hui Zhang, Xueying Zhang, Xiaoying Niu, Dongyou Wu, Yue Zhou, Xin Wang, Wei Pu
Snow and ice are important reservoirs of atmospheric ions, yet a comprehensive understanding of ions in snow/ice remains a challenge due to spatiotemporal limitations of field campaigns. To address this issue, mathematical statistics were employed to summarize global observational data from 49 published sources covering 546 snow and 19 ice core sampling sites. The findings show remarkable variability
-
Performance evaluation of four sampling techniques and source apportionment for the atmospheric deposition fluxes of polycyclic aromatic hydrocarbons Atmos. Environ. (IF 5.0) Pub Date : 2024-03-21 Quang Tran Vuong, Keun-Sik Jung, Seong-Joon Kim, Hye-Ok Kwon, Tien Van Do, Ji Yi Lee, Sung-Deuk Choi
-
Designing additional CO2 in-situ surface observation networks over South Korea using bayesian inversion coupled with Lagrangian modelling Atmos. Environ. (IF 5.0) Pub Date : 2024-03-20 Samuel Takele Kenea, Daegeun Shin, Shanlan Li, Sangwon Joo, Sumin Kim, Lev D. Labzovskii
Efforts to enhance greenhouse gas (GHG) emission reduction in East Asia play a pivotal role on both global and regional scales in advancing climate mitigation strategies. This study aimed to better constrain anthropogenic CO emission estimates by expanding the network of near-surface in-situ stations for CO observations across South Korea. To achieve an optimal CO network design, we conducted an Observing
-
A quantitative analysis of causes for increasing ozone pollution in Shanghai during the 2022 lockdown and implications for control policy Atmos. Environ. (IF 5.0) Pub Date : 2024-03-19 Yingnan Zhang, Qingyan Fu, Tao Wang, Juntao Huo, Huxiong Cui, Jiangshan Mu, Yue Tan, Tianshu Chen, Hengqing Shen, Qinyi Li, Likun Xue
Ground-level ozone (O) pollution is a major air quality issue in densely populated urban areas. Despite a significant decline in human activities in the megacity Shanghai from March 28 to May 31, 2022, ground-level measurements indicate a rise in maximum daily average 8-h (MDA8) O concentrations in comparison to the corresponding period in 2021. There is a need for quantitative analysis to identify
-
Size distribution and source-specific risks of atmospheric elements in Dalian, a coastal city in north China Atmos. Environ. (IF 5.0) Pub Date : 2024-03-19 Rong Cao, Fanyu Meng, A. Mila, Xiaoli Sun, Haijun Zhang, Jiping Chen, Ningbo Geng
-
Optical and physical characteristics of aerosols over Asia: AERONET, MERRA-2 and CAMS Atmos. Environ. (IF 5.0) Pub Date : 2024-03-18 Kamran Ansari, S. Ramachandran
-
Improving the Asian dust storm prediction using WRF-Chem through combinational optimization of physical parameterization schemes Atmos. Environ. (IF 5.0) Pub Date : 2024-03-18 Ji Won Yoon, Ebony Lee, Seon Ki Park
This study aims to enhance the accuracy of the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem) in forecasting Asian dust storms (ADSs) by using the micro-Genetic Algorithm (μGA). We developed an optimization system---the WRF-Chem-μGA system---to seek the optimal combination of the planetary boundary layer (PBL) and land surface parameterization schemes, which are crucial for
-
Calibration method of particulate matter sensor based on density peaks clustering combined with stacking algorithm Atmos. Environ. (IF 5.0) Pub Date : 2024-03-18 Jiazhen Lu, Junjie Liu, Xiaoxia Han, Yue Liu, Bo Xu, Ji Xiao
-
Modelling the effect of shape on atmospheric microplastic transport Atmos. Environ. (IF 5.0) Pub Date : 2024-03-18 Eric Ward, Mark Gordon, Ronald Hanson, Liisa M. Jantunen
-
Influence of updated isoprene oxidation mechanisms on the formation of intermediate and secondary products in MCM v3.3.1 Atmos. Environ. (IF 5.0) Pub Date : 2024-03-15 Zhenhao Ling, Huatian Guan, Yonghong Wang, Xiaoyu Yu, Jiayin Sun, Yee Jun Tham, Xuemei Wang, Zhe Wang, Hai Guo
In this study, we developed an observation based photochemical box model with the measurement data collected at a suburban site (i.e., the Xianghe, XH site) of the Beijing-Tianjin-Hebei (BTH) region and the latest version of the Master Chemical Mechanism (MCM v3.3.1), which newly incorporated 498 reaction for the additional 155 species with the oxidation of isoprene by the OH radical. The influence
-
Detection of Chinese Spring Festival in Beijing using in-situ CO2 observations and atmospheric inversion Atmos. Environ. (IF 5.0) Pub Date : 2024-03-15 Zhiqiang Liu, Ning Zeng, Pengfei Han, Qixiang Cai, Bo Yao, Pucai Wang, Weijun Quan, Wenhan Tang, Zhoutong Liang, Yun Liu, Martin Cory
Anthropogenic CO emissions inventories in urban areas are highly uncertain and lack fine-scale temporal information. Here, we use atmospheric CO observations from 6 sites and an ensemble-based "top-down" inversion system to estimate the spatiotemporal dynamics of CO emissions in the world's largest urban agglomeration of Beijing-Tianjin-Hebei (JJJ). Relative to the period before the Chinese Spring
-
Heterogeneous variations in wintertime PM2.5 sources, compositions and exposure risks at urban/suburban rural/remote rural areas in the post COVID-19/Clean-Heating period Atmos. Environ. (IF 5.0) Pub Date : 2024-03-14 Zhiyong Li, Zhuangzhuang Ren, Chen Liu, Zhi Ning, Jixiang Liu, Jinming Liu, Zhen Zhai, Xiaohua Ma, Lan Chen, Yuling Zhang, Longkai Bai, Shaofei Kong
-
CO2 synergistic emission reduction and health benefits of PM2.5 reaching WHO-III level in Pearl River Delta Atmos. Environ. (IF 5.0) Pub Date : 2024-03-14 Yijia Zheng, Wutao Zeng, Shucheng Chang, Long Wang, Chenghao Liao, Yongbo Zhang
Protecting human health is one of the fundamental goals of continuous air quality improvement. Considering the same sources of CO and air pollutants emissions, their emission control measures often have a certain degree of synergistic emission reduction effects To balance the costs and policy efficiency, policy makers should assess the synergistic benefits of CO emission reduction when formulating
-
A bipolar SMPS network for measuring atmospheric aerosols using natural air ions Atmos. Environ. (IF 5.0) Pub Date : 2024-03-13 Yiran Li, Jin Wu, Hao Wu, Xiaomeng Liu, Qi Zhou, Yiqun Lu, Yuhang Wu, Mengyu Liu, Hengjia Ou, Shixin Mai, Xuehui He, Huaying Song, Haoqian Wang, Ping Zeng, Yiming Wang, Dongbin Wang, Qiang Zhang, Jianguo Deng, Jianwu Shi, Xiaoxiao Li, Jun Zhao, Fang Zhang, Cheng Huang, Mei Zheng, Jiming Hao, Jingkun Jiang
-
Variability of nocturnal aerosol optical properties in China and correlations with meteorological variables during 2003–2022 Atmos. Environ. (IF 5.0) Pub Date : 2024-03-11 Fuxing Li, Zhengqiang Li, Li Li, Cheng Fan, Yisong Xie
Aerosol optical properties in daytime have been widely explored based on the ground-based and satellite-based passive remote sensing. However, few studies have investigated long-term variability of nocturnal aerosol optical properties and its impact factors mainly due to scarce observations. Nocturnal aerosol optical depth (NAOD) and Ångström exponent (NAE) derived from Copernicus Atmosphere Monitoring
-
Seasonal distributions and possible sources of low molecular weight organic acids in PM2.5 from a typical mining city after decade green mining developing in Southeastern Hubei, Central China Atmos. Environ. (IF 5.0) Pub Date : 2024-03-11 Shan Liu, Kimitaka Kawamura, Bhagawati Kunwar, Ambarish Pokhrel, Changlin Zhan, Hongxia Liu, Jiaquan Zhang, Jihong Quan
-
Unveiling the urban resilience in cities of China, a study on NO2 concentrations and COVID-19 pandemic Atmos. Environ. (IF 5.0) Pub Date : 2024-03-08 Shaolin Wu, Man Sing Wong, Baofeng Di, Xiaoli Ding, Guoqiang Shi, Edwin H.W. Chan, Waqas Muhammad
-
Nitrogen compounds at Mexican and USA coasts on the Gulf of Mexico Atmos. Environ. (IF 5.0) Pub Date : 2024-03-08 Daimy Avila Rodríguez, Rodolfo Sosa Echeverría, Gilberto Fuentes García, Ana Luisa Alarcón Jiménez, Georgina Fernández Villagómez, Víctor Magaña, John Walker, Pablo Sánchez Álvarez
-
Assessing school children's personal exposure to PM2.5 in Suva, Fiji Atmos. Environ. (IF 5.0) Pub Date : 2024-03-08 Basant Pradhan, Kimberly Singh, Rohan Jayaratne, Helen Thompson, Paul Jagals, Jone Gucake, Jimmy Jaghoro Hilly, Amelia Turagabeci, Lidia Morawska
-
Investigation of 2021 wildfire impacts on air quality in southwestern Turkey Atmos. Environ. (IF 5.0) Pub Date : 2024-03-07 Merve Eke, Fulya Cingiroglu, Burcak Kaynak
-
Synoptic circulation factors associated with wintertime high-PM2.5 concentrations in seoul, Republic of Korea: Their interpretations and applications Atmos. Environ. (IF 5.0) Pub Date : 2024-03-06 Hye-Ryun Oh, Doo-Sun R. Park, Dasol Kim, Chang-Hoi Ho, Seungmin Lee
Many studies have explored atmospheric circulation fields associated with high particulate matter (PM) events, but only a few studies have evaluated the relative importance of meteorological variables in the circulation fields. In this study, we applied factor analysis method to examine meteorological variables related to the synoptic pattern of high-PM episodes (i.e., days with daily averaged PM concentration
-
Role of turbulence in ozone chemistry: Segregation effect implicated from multiscale modeling over Hong Kong Atmos. Environ. (IF 5.0) Pub Date : 2024-03-06 Yuting Wang, Yong-Feng Ma, Cathy W.Y. Li, Tao Wang, Guy Brasseur
-
The value of adding black carbon to community monitoring of particulate matter Atmos. Environ. (IF 5.0) Pub Date : 2024-03-05 Rebecca A. Sugrue, Chelsea V. Preble, James D.A. Butler, Alaia J. Redon-Gabel, Pietro Marconi, Karan D. Shetty, Lee Ann L. Hill, Audrey M. Amezcua-Smith, Boris R. Lukanov, Thomas W. Kirchstetter
-
A deep learning-based imputation method for missing gaps in satellite aerosol products by fusing numerical model data Atmos. Environ. (IF 5.0) Pub Date : 2024-03-04 Ning Liu, Yi Li, Zengliang Zang, Yiwen Hu, Xin Fang, Simone Lolli
Satellite-based aerosol optical depth (AOD) products are commonly used in various aerosol-related studies, such as aerosol pollution mapping and aerosol-climate interactions. However, these satellite AOD products often suffer from significant missing gaps due to cloud cover and limitations in the retrieval algorithm. To address this issue, some studies take advantage of real-time seamless simulation
-
An application of low-cost sensors to monitor children's exposure to air pollution at five schools in Queensland, Australia Atmos. Environ. (IF 5.0) Pub Date : 2024-03-04 Basant Pradhan, Rohan Jayaratne, Helen Thompson, Lidia Morawska
-
Backward and forward simulation of polycyclic aromatic hydrocarbons by the grid-scale model _validation and applications for environmental management Atmos. Environ. (IF 5.0) Pub Date : 2024-03-03 Ming-Tsuen Hsieh, Wen-Yu Chung, Shoiw-Mei Tseng, Pei-Chi Shih, Shau-Ku Huang, Chon-Lin Lee
-
Mass and Light Absorption Properties of Atmospheric Carbonaceous Aerosols over the Outflow Regions of Indo-Gangetic Plain Atmos. Environ. (IF 5.0) Pub Date : 2024-03-02 Ashish Soni, Abhijit Chatterjee, Binoy K. Saikia, Tarun Gupta
-
Characterization of water-soluble organic carbon absorption at an urban background site in the south-eastern Iberian Peninsula Atmos. Environ. (IF 5.0) Pub Date : 2024-03-02 A. López-Caravaca, J. Crespo, N. Galindo, E. Yubero, A. Clemente, R. Castañer, J.F. Nicolás
Measurements of absorption coefficients (σ,) and carbonaceous components (OC, EC, WSOC and levoglucosan) in PM were conducted at an urban background site in southeastern Spain throughout 2021. The main goal of this research was to determine the contribution from different sources to WSOC light absorption (σ). For this, σ, values were previously obtained. The mean contribution of BrC to total aerosol
-
Chemical characterization and sources of background aerosols in the eastern Mediterranean Atmos. Environ. (IF 5.0) Pub Date : 2024-03-02 Kalliopi Florou, Aikaterini Liangou, Christos Kaltsonoudis, Evangelos Louvaris, Antonios Tasoglou, David Patoulias, Giorgos Kouvarakis, Nikos Kalivitis, Ivan Kourtchev, Markus Kalberer, Maria Tsagkaraki, Nikolaos Mihalopoulos, Spyros N. Pandis
Measurements of the composition of the gas and particulate phases were conducted from May 9 to June 4 of 2016 at the Finokalia (Greece) remote coastal site in the eastern Mediterranean, continuing the effort to track long term changes of the atmospheric chemical composition in the area. Finokalia is influenced by air masses arriving in the site from regional sources in Europe, Africa, and other locations
-
Modelled sources of airborne microplastics collected at a remote Southern Hemisphere site Atmos. Environ. (IF 5.0) Pub Date : 2024-03-01 Alex Aves, Helena Ruffell, Nikolaos Evangeliou, Sally Gaw, Laura E. Revell
Airborne microplastics have emerged in recent years as ubiquitous atmospheric pollutants. However, data from the Southern Hemisphere, and remote regions in particular, are sparse. Here, we report airborne microplastic deposition fluxes measured during a five-week sampling campaign at a remote site in the foothills of the Southern Alps of New Zealand. Samples were collected over 24-hour periods for
-
Measurements of brown carbon and its optical properties from boreal forest fires in Alaska summer Atmos. Environ. (IF 5.0) Pub Date : 2024-02-29 Kunal Bali, Sujai Banerji, James R. Campbell, Aachal Vallabhbhai Bhakta, L.-W. Antony Chen, Christopher D. Holmes, Jingqiu Mao
Brown carbon (BrC) plays an important role in global radiative budget but there have been few studies on BrC in Arctic despite rapid warming and increasing wildfires in this region. Here we investigate the optical properties of BrC from boreal fires in Alaska summer, with two sets of measurements from PILS-LWCC-TOC (Particle-Into-Liquid-Sampler – Liquid-Waveguide Capillary flow-through optical Cell
-
Characteristics of new particle formation events in a mountain semi-rural location in India Atmos. Environ. (IF 5.0) Pub Date : 2024-02-29 Jeni N. Victor, Pallavi Buchunde, Mathew Sebastian, Vijay P. Kanawade, Devendraa Siingh, Subrata Mukherjee, Swapnil S. Potdar, T. Dharmaraj, Govindan Pandithurai
Atmospheric new particle formation (NPF, via gas-to-particle conversion) occurs commonly in the troposphere which has implications for air quality, weather, and climate. Here, we comprehensively characterize NPF events at the High Altitude Cloud Physics Laboratory (HACPL) in a mountain semi-rural location, Mahabaleshwar using 2.5 years of semi-continuous measurements of ion and particle number size
-
Contribution of black carbon and desert dust to aerosol absorption in the atmosphere of the Eastern Arabian Peninsula Atmos. Environ. (IF 5.0) Pub Date : 2024-02-27 Mohamed M.K. Mahfouz, Gregor Skok, Jean Sciare, Michael Pikridas, M. Rami Alfarra, Shamjad Moosakutty, Balint Alfoldy, Matic Ivančič, Martin Rigler, Asta Gregorič, Rok Podlipec, Svenja Lohmann, Gregor Hlawacek, Rene Heller, Ersin Tutsak, Griša Močnik
Discriminating the absorption coefficients of aerosol mineral dust and black carbon (BC) in different aerosol size fractions is a challenge because of BC's large mass absorption cross-section compared to dust. Ambient aerosol wavelength dependent absorption coefficients in supermicron and submicron size fractions were determined with a high time resolution. The measurements were performed simultaneously
-
Heterogeneous photochemical uptake of SO2 on typical brown carbon species: A significant sulfate source Atmos. Environ. (IF 5.0) Pub Date : 2024-02-27 Hongxing Yang, Wangjin Yang, Jiawei Ma, Chong Han
The heterogeneous reactions of SO on organic aerosols (OA) have been proposed as a significant source of sulfates. The photochemical conversion of SO to sulfates on the surface of light-absorbing OA, i.e., brown carbon (BrC), remained slight understanding. Herein, the photochemical uptake of SO on typical BrC species, including aromatic carbonyl compounds (ACs), polycyclic aromatic hydrocarbons (PAHs)
-
Road transport emissions in EDGAR (Emissions Database for Global Atmospheric Research) Atmos. Environ. (IF 5.0) Pub Date : 2024-02-27 Dimitra Lekaki, Matina Kastori, Giannis Papadimitriou, Giorgos Mellios, Diego Guizzardi, Marilena Muntean, Monica Crippa, Gabriel Oreggioni, Leonidas Ntziachristos
Road transport on one hand plays an important role in the world economy and significantly contributes to the global gross domestic product; on the other hand, it is one of the main sources of air pollution and greenhouse gas emissions, mostly originating from the consumption of liquid fossil fuels. One of the main tools to monitor emissions, in an effort to reduce them, is to maintain inventories where
-
Recent progress in chemical ionization mass spectrometry and its application in atmospheric environment Atmos. Environ. (IF 5.0) Pub Date : 2024-02-27 Wanying Li, Jiangyao Chen, Yuemeng Ji, Jun Zheng, Taicheng An
Chemical ionization mass spectrometry (CIMS) is a soft ionization technique and has become an important research tool for real-time atmospheric pollutants measurement, providing reliable datasets for elucidating the pollution formation in atmospheric environment. This review presented a summary of recent progress in development, equipment and application of CIMS in atmospheric environment, including
-
Long-term (1993–2018) particulate polycyclic aromatic hydrocarbons (PAHs) concentration trend in the atmosphere of Seoul: Changes in major sources and health effects Atmos. Environ. (IF 5.0) Pub Date : 2024-02-27 Eunlak Choi, Ji Yi Lee, Yong Pyo Kim
-
Seasonal charge distributions of submicron atmospheric particles in Yokohama, Japan Atmos. Environ. (IF 5.0) Pub Date : 2024-02-24 Tatsuhiro Mori, Yuto Ishii, Ayumi Iwata, Tomoaki Okuda
Charge distribution measurements are required to understand the spatiotemporal distribution of the number concentrations of submicron atmospheric particles that affect radiative forcing and particle deposition in human airways. The number concentrations of non-charged and charged particles within the 0.3–0.5 μm diameter () range were measured at Keio University in Yokohama, Japan, from June 2022 to
-
Atmospheric degradation of 2-Isopropoxyethanol: Reactions with Cl, OH and NO3 Atmos. Environ. (IF 5.0) Pub Date : 2024-02-24 Inmaculada Aranda, Sagrario Salgado, Pilar Martín, Florentina Villanueva, María Teresa Pinés, Beatriz Cabañas
The use of glycol ethers as solvents and chemical intermediates has increased markedly in recent years. Once released into the atmosphere, they can undergo degradation processes mainly by reactions with the atmospheric oxidants that can have significant effects on the environment. In this work, the kinetic and products study of reactions of 2-isopropoxyethanol (2-iPE, (CH)CHOCHCHOH) with OH and NO
-
Investigating sources and health risk assessment of n-alkanes in atmospheric wet deposition in Indo-Gangetic Plain Atmos. Environ. (IF 5.0) Pub Date : 2024-02-23 Shweta Singh, Monika J. Kulshrestha
The present study determines the levels of n-alkanes in atmospheric wet deposition at an urban site in the Indo-Gangetic Plain, Delhi, during monsoon and non-monsoon periods in 2021. The n-alkane homologs (C–C) were determined in wet deposition, which included wet-only and bulk samples. The average total n-alkanes were found to be 56.0 ± 16.7 and 439.4 ± 150.8 μg/L in wet-only samples, whereas, 149
-
Validation of geostationary environment monitoring spectrometer (GEMS), TROPOspheric Monitoring Instrument (TROPOMI), and Ozone Mapping and Profiler Suite Nadir Mapper (OMPS) using pandora measurements during GEMS Map of Air Pollution (GMAP) field campaign Atmos. Environ. (IF 5.0) Pub Date : 2024-02-23 Kanghyun Baek, Juseon Bak, Jae Hwan Kim, Sang Seo Park, David P. Haffner, Wonjin Lee
This study presents the validation of total column ozone (TCO) data retrieved from the Geostationary Environment Monitoring Spectrometer (GEMS) against ground-based Pandora spectrometer observations during the GEMS Map of Air Pollution (GMAP) campaign from November 2020 to January 2021 in Seosan, South Korea. To evaluate the accuracy of the Pandora TCO measurements obtained during the campaign period
-
A comprehensive observation of organic and inorganic nitrogen in gases, particulate matter and precipitation in the northern suburb of Nanjing, East China, with an emphasis on size-resolved particulate nitrogen Atmos. Environ. (IF 5.0) Pub Date : 2024-02-22 Xingna Yu, Jingwen Guan, Jiaying Zhang, Yixuan Cheng, Jianlin Shen, Kanike Raghavendra Kumar, Yuxiu Zhang, Rupakheti Dipesh, Jianlin Hu
China is considered one of the nitrogen deposition hotspots in the world. Measurements to date have focused mainly on inorganic nitrogen, organic nitrogen and the size distribution of particulate nitrogen has yet to be studied. Lack of dry deposition observations imposes a reliance on models, resulting in a much larger uncertainty relative to wet deposition which is routinely measured. In this study
-
Key characteristics of new particle formation events occurring simultaneously in the Yangtze River Delta and northeast rural sites in China Atmos. Environ. (IF 5.0) Pub Date : 2024-02-22 Shuo Liu, Peng Wang, Qianli Ma, Xiaojing Shen, Hanqing Kang, Junying Sun, Quan Liu, Yangmei Zhang, Muzhen Shi, Dajiang Yu, Junting Zhong, Xinyao Hu, Jiayuan Lu, Aoyuan Yu, Huizheng Che, Xiaoye Zhang
Continuous measurements of particle number size distributions with mobility diameters ranging from 3 to 800 nm were performed at the Longfengshan (LFS) and Lin'an (LAN) stations, which represent the background atmospheric conditions in the Northeast China Plain and the Yangtze River Delta regions, respectively, from October 2021 to April 2022. The mean number concentration of total particles was (5
-
Exploring ozone production sensitivity to NOx and VOCs in the New York City airshed in the spring and summers of 2017–2019 Atmos. Environ. (IF 5.0) Pub Date : 2024-02-20 Abby E. Sebol, Timothy P. Canty, Glenn M. Wolfe, Reem Hannun, Allison M. Ring, Xinrong Ren
Reducing ozone in the New York City (NYC) region requires understanding the nonlinearity of ozone production (PO) and its sensitivity to volatile organic compounds (VOCs) and nitrogen oxides (NO = NO + NO). Using observations from the Long Island Sound Tropospheric Ozone Study (LISTOS) in the late spring and summers of 2017–2019 and a 0-D box model, we test the sensitivity of PO to ozone precursors
-
Evaluation of Turbulence Depending Drag Coefficient in Plume Rise Model for Fire Smoke Dispersion Atmos. Environ. (IF 5.0) Pub Date : 2024-02-20 Bianca Tenti, Enrico Ferrero
It is well-known that the correct modeling of the plume rise is fundamental for a proper description of pollutants dispersion, especially for highly buoyant plumes like those emitted by wildfires. In this work, we want to investigate the role of the drag coefficient () in our plume rise scheme. We evaluate different formulations taken from the literature and suggest the best option for the plume rise
-
Identifying sensitive precursors of ozone formation using photochemical indicators and transition values comprised by continuous automatic monitoring data Atmos. Environ. (IF 5.0) Pub Date : 2024-02-20 Chang-You Tsai, Tu-Fu Chen, Ken-Hui Chang
The O photochemical indicator is a tool used to identify the sensitive precursors of O formation. Establishing a reliable photochemical indicator and its transition value composed of continuous automatic monitoring of chemical components can not only analyze sensitive precursors of O formation in real-time but also analyze the time and space distribution characteristics of sensitive precursors of O
-
Modelling of sulfur chemistry in a fog episode in northern China and implication for the efficacy of SO2 emission control Atmos. Environ. (IF 5.0) Pub Date : 2024-02-19 Leyi Yuan, Mingxu Liu, Xinyi Dang, Hao Wu, Fang Shang, Lianfang Wei, Pingqing Fu, Yu Song, Min Hu
Fog water phase is an effective media for aqueous sulfate formation, especially in polluted urban areas. Fog events frequently occur in northern China during wintertime, which are characterized by increased aerosol loadings with sulfate concentrations reaching about 200 micrograms per cubic meters in 2010s. Studies on sulfur chemistry in fog events specifically for this region are inadequate. In this
-
Two-step AI-aided Bayesian source identification of urban-scale pollution Atmos. Environ. (IF 5.0) Pub Date : 2024-02-17 Elissar Al Aawar, Mohamad Abed El Rahman Hammoud, Ibrahim Hoteit
Poor air quality produces detrimental effects worldwide; hence, it is vital to thoroughly characterize air pollution sources and effectively address and mitigate such effects. Due to the complexity of the underlying physical processes, and uncertainties in the available observations, the air pollution source identification problem is typically cast within a Bayesian inversion framework. The latter
-
Evaluating the sensitivity of fine particulate matter (PM2.5) simulations to chemical mechanism in WRF-Chem over Delhi Atmos. Environ. (IF 5.0) Pub Date : 2024-02-17 Rajmal Jat, Chinmay Jena, Prafull P. Yadav, Gaurav Govardhan, Gayatry Kalita, Sreyashi Debnath, Preeti Gunwani, Prodip Acharja, PoojaV. Pawar, Pratul Sharma, Santosh H. Kulkarni, Akshay Kulkarni, Akshara Kaginalkar, Dilip M. Chate, Rajesh Kumar, Vijay Kumar Soni, Sachin D. Ghude
Accurate prediction of PM, its optical properties and dominant chemical components are essential for air quality studies. In this study, we investigated the effects of two gas phase chemical schemes coupled with three aerosol mechanisms on the simulated PM mass concentration in Delhi using the Weather Research and Forecasting model with Chemistry module (WRF-Chem). The model was employed to cover the
-
Automatic identification of factor profiles can be achieved by improved machine learning model Atmos. Environ. (IF 5.0) Pub Date : 2024-02-16 Bo Xu, Junbo Huang, Yi Ge, Chun Zhang, Han Xu, Feng Wang, Huan Zhao, Linlin Zhang, Jinxing Liu, Yinchang Feng, Guoliang Shi
The identification of factor profiles is a pivotal step in the source apportionment model. Currently, this process heavily relies on human experience, resulting in high subjectivity in the results and requiring a time-consuming procedure. In this study, a pseudo label extra trees classifier model was proposed to facilitate the automated identification of factor profiles. The source profiles serve as
-
-
Air pollution removal with urban greenery – Introducing the Vegetation Impact Dynamic Assessment model (VIDA) Atmos. Environ. (IF 5.0) Pub Date : 2024-02-13 Malin S.M. Gustafsson, Jenny Lindén, Emelie M.M. Johansson, Ågot K. Watne, Håkan Pleijel
Urban greenery is identified as a potential tool in air pollution mitigation. However, the impact is still debated. This paper introduces the innovative VIDA (Vegetation Impact Dynamic Assessment) model, specifically designed to quantify air pollution removal through deposition on vegetation. The VIDA model offers an advanced representation of vegetation that could be integrated into urban air quality
-
Assessment and characteristics of S-NPP VIIRS Deep Blue and Dark Target aerosol properties under clean, polluted and fire scenarios over the Amazon Atmos. Environ. (IF 5.0) Pub Date : 2024-02-12 Vanúcia Schumacher, Alberto Setzer
The present study carries out the systematic performance evaluation of aerosol optical depth (AOD) products retrieved using Visible Infrared Imaging Radiometer Suite (VIIRS) Deep Blue (DB) and Dark Target (DT) onboard Suomi National Polar-orbiting Partnership (S-NPP) satellite over the Amazon Basin. Characteristics and uncertainty were evaluated under distinct air pollution scenarios such as a clean
-
Effects of chemical mechanism and meteorological factors on the concentration of atmospheric pollutants in the megacity Beijing, China Atmos. Environ. (IF 5.0) Pub Date : 2024-02-10 Yujie Li, Qizhong Wu, Xiaoyan Wang, Huaqiong Cheng, Yiming Sun, Dongqing Li, Kai Cao, Xueying Wang, Shurui Yang
To distinguish the effects of chemical mechanisms and meteorological factors on air pollution in the megacity of Beijing, the sensitive numerical experiments with the third-generation air quality modeling system (WRF-SMOKE-CMAQ) are designed for a one-year simulation in 2018. The results indicate that: 1) the modeling system plays well in performance in the megacity of Beijing in 2018. The correlation
-
Predicting PM2.5 levels and exceedance days using machine learning methods Atmos. Environ. (IF 5.0) Pub Date : 2024-02-10 Ziqi Gao, Khanh Do, Zongrun Li, Xiangyu Jiang, Kamal J. Maji, Cesunica E. Ivey, Armistead G. Russell
Machine learning methods are increasingly being used in the field of air quality research to investigate the relationship between air pollutant levels, emissions, and meteorological changes over time. This research is used for both scientific investigation, and policy assessment and development. However, there is a lack of studies that have compared the performance of different machine learning methods
-
Festive fireworks in Delhi: A major source of elemental aerosols established through dispersion normalized PMF in a multiyear study Atmos. Environ. (IF 5.0) Pub Date : 2024-02-10 Mohd Faisal, Umer Ali, Ajit Kumar, Naba Hazarika, Vikram Singh, Mayank Kumar
Fireworks activity is behind the substantial increase in particulate concentration during Diwali in Delhi and the concomitantly enhanced atmospheric metal concentration. Therefore, a comprehensive understanding of the impact of fireworks on the atmosphere is crucial to develop a mitigation strategy. Accordingly, this study focuses on the comparative analysis of fireworks events in Diwali across 2019
-
Cruise observation of ambient volatile organic compounds over Hong Kong coastal water Atmos. Environ. (IF 5.0) Pub Date : 2024-02-09 Hao Sun, Dasa Gu, Xin Feng, Zhe Wang, Xiangyunong Cao, Mingyao Sun, Zhi Ning, Penggang Zheng, Yuchen Mai, Zijie Xu, Wai Ming Chan, Xin Li, Wentai Zhang, Ho Wun Lee, Ka Fung Leung, Jian Zhen Yu, Eddie Lee, Peter K.K. Louie, Kenneth Leung
Air pollution is a major environmental issue in Hong Kong, and ozone (O) is one of the most concerned pollutants because of its notable rising trend during the past three decades. Volatile organic compounds (VOCs) are the main precursors to O formation, but their characteristics over coastal water in Hong Kong were not well studied due to a lack of observations. We conducted sixteen cruise campaigns