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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
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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
Low molecular weight (LMW) organic compounds are prevalent in the atmospheric aerosols. Human activities and natural sources could significantly influence aerosol compositions and concentrations, particularly in a typical mining and metallurgy city. In this study, we measured dicarboxylic acids, ω-oxocarboxylic acids, pyruvic acid, α-dicarbonyls, and fatty acids in PM from Huangshi, China throughout
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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
COVID-19 can be considered as the largest public health incident since 2019, posing disturbances to the medical, economic, and social systems. Understanding different levels of city resilience to the impact of COVID-19 on sustainable urban development is therefore essential. In this paper, we analyzed the evolution of the pandemic, the recovery of urban activities and major drivers of urban resilience
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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 Orlando Magaña Rueda, John Walker, Pablo Sánchez Álvarez
In recent decades, anthropogenic emissions in the Gulf of Mexico have caused a deterioration in air quality in surrounding areas, mainly due to particulate matter, sulfur dioxide and nitrogen dioxide. Over this period, interest in reactive nitrogen compounds has increased due to their relationships to air quality and ecosystem impacts associated with atmospheric deposition. In this study we summarize
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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
Globally, there is little information on children's personal exposure to particle pollution in developing countries, and hardly any in the Pacific Island Countries. This study was conducted with school children in Suva, Fiji, with the aim of assisting to fill this gap in knowledge. The participants included eighty-four children ranging from 10 to 15 years of age from five schools and two communities
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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
In the summer of 2021, unusually intense wildfires happened in southwestern Turkey, especially in Antalya and Mugla with destroying effects on forests, wildlife, and communities residing there. This study aims to understand the air quality impacts of these wildfires. A time period (June–September 2021) covering pre-, fire, and post-periods was investigated using NO ground-based observations and TROPOMI
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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
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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
By influencing the mixing of reactive species in the atmosphere, turbulence affects the rates at which chemical species react, specifically in the planetary boundary layer. To analyze the turbulent segregation effect on the atmospheric ozone photochemistry, coupled meso-to micro-scale simulations are performed over Hong Kong, a polluted megacity. The comparison of the ozone production rates between
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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
Low-cost particulate matter (PM) sensors are increasingly used by researchers, public health agencies, and the public to measure spatial and temporal variations in air pollution, which can inform strategies for community air pollution reduction. While low-cost PM sensors provide a valuable measure of harmful fine particulate matter (PM), a significant portion of ambient PM is typically the secondary
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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
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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
There are local variations in the concentration of air pollutants that may not be captured by the existing monitoring networks; however, they can be important because this is where community exposures occur. Using low-cost monitors (LCM) located at relevant community locations, such as schools, can provide information on local sources, exposure and, with the participation of the community, can help
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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
Polycyclic aromatic hydrocarbons (PAHs) associated with fine particulate matter (PM) can cause serious health problems, but data are scarce. We have previously developed a grid-scale model (GSM) to simulate PM-PAH levels on an hourly basis. This study aims to verify the applicability of the model to different years and to reasonably assess the long-term spatiotemporal effects on PAH variation in Kaohsiung
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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
The uncertainty associated with carbonaceous aerosols in climate models becomes an obstacle to evaluating their harmful environmental effects. Brown Carbon (BrC) has recently become an eye-catching carbonaceous aerosol in ambient air because of its strong light absorption properties. The optical properties of soluble BrC are well studied in South Asia, one of the largest emitters. However, the absorption
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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
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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
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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
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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
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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
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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
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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)
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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
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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
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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
This study assessed the long-term concentration trend and profiles of twelve polycyclic aromatic hydrocarbons (PAHs) occurring as airborne particulate matter in Seoul, Republic of Korea (Korea) between 1993 and 2018 to evaluate the human health effect and the effectiveness of air quality management policies. Total PAHs (∑PAHs of 12 compounds), benzo [a]pyrene (BaP), and BaP toxic equivalent (BaP) concentrations
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Assessing the bias of molybdenum catalytic conversion in the measurement of NO2 in rural air quality networks Atmos. Environ. (IF 5.0) Pub Date : 2024-02-06 Nicholas Cowan, Marsailidh M. Twigg, Sarah R. Leeson, Matthew R. Jones, Duncan Harvey, Ivan Simmons, Mhairi Coyle, John Kentisbeer, Hannah Walker, Christine F. Braban
The measurement method of NO with continuous analysers is specified for EU Ambient Air Quality Directive compliance reporting, which provides a consistent methodology and concurrent NO measurements (85/203/EEC-NO2). While the established method of measurement of NO, following conversion of NO to NO using a molybdenum-conversion process, has known interference uncertainties (due to conversion of other
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Impact of SO2 and light on chemical morphology and hygroscopicity of natural salt aerosols Atmos. Environ. (IF 5.0) Pub Date : 2024-02-05 Xiangrui Kong, Cheng Wu, Harsh Raj Mishra, Yuxin Hao, Mathieu Cazaunau, Antonin Bergé, Edouard Pangui, Robin Faust, Wanyu Liu, Jun Li, Sen Wang, Bénédicte Picquet-Varrault, Mattias Hallquist
The interactions between SO and natural salt aerosol particles represent complex and crucial dynamics within atmospheric processes and the broader climate system. This study investigated the SO uptake, hygroscopicity, morphology and mixing states of natural salt particles, which are generated from brines sampled from the Chaka salt lake located in the Qinghai-Tibet plateau. A comparison with atomized
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Bayesian inversion of emissions from large urban fire using in situ observations Atmos. Environ. (IF 5.0) Pub Date : 2024-02-05 Emilie Launay, Virginie Hergault, Marc Bocquet, Joffrey Dumont Le Brazidec, Yelva Roustan
Large-scale fires in urban areas have highlighted the need to develop ways of assessing the risks posed by smoke plumes to people and the environment. One of the challenges is to quickly provide the authorities with information on the areas affected by the plume and the levels of pollutant concentration to which people may have been exposed. In this work, we develop an inverse modelling method to find
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Regional transport dominates air pollution events in all seasons in Beijing in 2020 Atmos. Environ. (IF 5.0) Pub Date : 2024-02-05 Zhaolei Zhang, Siyu Wang, Peng Wang, Shengqiang Zhu, Hongliang Zhang, Shuxiao Wang
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Long-term trends and source apportionment of fine particulate matter (PM2.5) and gaseous pollutants in Auckland, New Zealand Atmos. Environ. (IF 5.0) Pub Date : 2024-02-04 Louis K. Boamponsem, Philip K. Hopke, Perry K. Davy
Airborne particles and pollutant gases are of increasing concern due to their adverse health effects, necessitating a thorough understanding of their composition, sources, spatial and temporal trends for effective air quality management. This study is part of a source apportionment study in Auckland, a dynamic urban environment with complex air quality challenges in an isolated Southern Ocean setting
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Analysis of an ozone episode in the Greater Bay Area based on low-cost sensor network Atmos. Environ. (IF 5.0) Pub Date : 2024-01-29 Wenlin Chen, Yingchuan Yang, Han Mei, Haijiong Sun, Peter K.K. Louie, Sabrina Yanan Jiang, Zhi Ning
Tropospheric ozone (O3) is an important air pollutant with a significant impact on human health, agricultural crops, ecosystems, and global warming. In the Greater Bay Area (GBA), O3 pollution concentration has shown an increasing trend in the last decade. It has become crucial to gain a deeper understanding of the factors contributing to this phenomenon. This study deployed a sensor network with high
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Analysis of spatially distributed enteric methane emissions from cattle across the geo-climatic regions of Mexico and uncertainty assessment Atmos. Environ. (IF 5.0) Pub Date : 2024-02-03 Juan Carlos Angeles-Hernandez, Juan Carlos Ku-Vera, María Fernanda Vázquez-Carrillo, Sofía Viridiana Castelán-Jaime, Luisa T. Molina, Mohammed Benaouda, Ermias Kebreab, Manuel González-Ronquillo, Fernando Paz-Pellat, Hugo Daniel Montelongo-Pérez, Octavio Alonso Castelán-Ortega
The present work aims to calculate a bottom-up IPCC-Tier 2 inventory for enteric CH emissions from cattle in Mexico, disaggregate the inventory into different geo-climatic regions to analyze the effect of the contrasting climates of Mexico on the inventory and identify the relevant sources of uncertainty associated with the inventory. Peer-reviewed country-specific emission factors (EF), activity data
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Response of air pollution to meteorological conditions and socioeconomic activities associated to the COVID-19 outbreak in the Yangtze River Economic Belt Atmos. Environ. (IF 5.0) Pub Date : 2024-02-03 Jingjing Si, Lin Zhang, Shizhuang Zhang, Yongjian Li, Zhixin Zhang, Ziqi He, Ying Chen, Hongbin Zhan
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Seasonal variations and size-dependent distribution of heavy metals in particulate matter in Huangshi: Implications for human health risk assessment Atmos. Environ. (IF 5.0) Pub Date : 2024-02-01 Yuhu Xie, Yao Mao, Ping Zhong, Yong Zhang, Li Zhang, Wei Chen, Chengkai Qu, Xinli Xing, Junji Cao, Jiaquan Zhang
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Outdoor charcoal combustion in barbecue grills: Potential cytotoxic, oxidative stress and mutagenic effects Atmos. Environ. (IF 5.0) Pub Date : 2024-02-01 Daniela Figueiredo, Estela D. Vicente, Cátia Gonçalves, Isabel Lopes, Helena Oliveira, Célia A. Alves
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Chemical composition, sources, and processes of winter haze in Chengdu, China: Insights from integrating the bulk chemical and single particle approaches Atmos. Environ. (IF 5.0) Pub Date : 2024-02-01 Junke Zhang, Wei Sun, Yunfei Su, Xiaoxue Peng, Chunying Chen, Xinyi Fu, Yuhan Long, Gehui Wang, Zhihan Rao, Lin Han, Xiaojuan Huang
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Improving machine-learned surface NO2 concentration mapping models with domain knowledge from data science perspective Atmos. Environ. (IF 5.0) Pub Date : 2024-02-01 Mengqian Hu, Kaixu Bai, Ke Li, Zhe Zheng, Yibing Sun, Liuqing Shao, Ruijie Li, Chaoshun Liu
Learning from big Earth data via supervised machine learning has become a popular approach for ambient air quality mapping. However, knowledge gap remains as which level satellite data should be used as the critical proxy variable, and how to improve data-driven models with domain knowledge are also still elusive. By taking surface NO concentration mapping as illustration, here we performed inter-comparison
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Characteristics of PM2.5 hygroscopicity and the influences of water-soluble ions during haze events in Beijing Atmos. Environ. (IF 5.0) Pub Date : 2024-02-01 Shuangshuang Ge, Jie Su, Pusheng Zhao, Ju Li, Shijie Liu, Yulu Qiu, Weiwei Pu, Zhiqiang Ma
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Comparisons of carbonaceous aerosols based on hourly data between two typical pollution events in heavily polluted zhengzhou Atmos. Environ. (IF 5.0) Pub Date : 2024-02-01 Zihan Kong, Zhe Dong, Zihan Li, Luqi Shang, Xiao Li, Ruiqin Zhang
Carbonaceous aerosols (CA) have a profound impact on both the environment and climate, and in particular, secondary organic aerosols play multiple roles in different types of pollution events. In this study, high-resolution CA data were collected in four seasons in 2020 with organic carbon (OC) and elemental carbon (EC) components quantified by thermo-optical analysis at an urban site in the traffic-hub
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Exposure to particulate matter and ozone, locations of regulatory monitors, and sociodemographic disparities in the city of Rio de Janeiro: Based on local air pollution estimates generated from machine learning models Atmos. Environ. (IF 5.0) Pub Date : 2024-01-30 Honghyok Kim, Ji-Young Son, Washington Junger, Michelle L. Bell
South America is underrepresented in research on air pollution exposure disparities by sociodemographic factors, although such disparities have been observed in other parts of the world. We investigated whether exposure to and information about air pollution differs by sociodemographic factors in the city of Rio de Janeiro, the second most populous city in Brazil with dense urban areas, for 2012–2017
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Concentrated fireworks display-induced changes in aerosol vertical characteristics and atmospheric pollutant emissions Atmos. Environ. (IF 5.0) Pub Date : 2024-01-29 Lingjian Duanmu, Weiwei Chen, Li Guo, Jing Fu, Bo You, Hongwu Yang, Tianshu Zhang