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An analysis of air pollution associated with the 2023 sand and dust storms over China:Aerosol properties and PM_(10) variability

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Geoscience Frontiers 2024年第2期15卷 155-168页

作者： mikalai filonchyk Michael P.Peterson Lifeng Zhang Haowen Yan Faculty of Geomatics Lanzhou Jiaotong UniversityLanzhou 730070China Gansu Provincial Engineering Laboratory for National Geographic State Monitoring Lanzhou 730070China Department of Geography/Geology University of Nebraska OmahaOmahaNE 68182USA

Every spring,a large part of China is confronted with sand and dust storms(SDS)–mainly originating in the Gobi(including Chinese and Mongolian Gobi)and Taklamakan *** March-April 2023,most of northern,northwestern and northeastern China was struck by three sandstorms that affected an area with more than 500 million *** this study,aerosol optical,microphysical and radiative properties were studied during these SDS events using an integrated approach that combines satellite,terrestrial and re-analysis *** results showed that dusty conditions were observed in most areas north of the Yangtze River(Chang Jiang)with daily average PM_(10)concentrations exceeding 1000 lg/m^(3) in many *** aerosol optical depth(AOD)at 550 nm during three SDS events exceeded a value of 1 throughout nearly the entire northern part of the *** AERONET data obtained from the AOE_Baotou site showed a significant increase in total AOD and a corresponding decrease in AE during the *** single scattering albedo(SSA),asymmetry parameter(ASY),real refractive index(RRI)and imaginary refractive index(IRI)values indicate an abundance of scattering coarse-mode *** radiative forcing(ARF)at top of the atmosphere and at the earth’s surface was nearly always negative during the period and ranged from48.5 to+2.7 Wm^(-2)and from180.8 to66.6 Wm^(-2),resulting in high positive ARF values at ATM(from+63.8 to+132.3 Wm^(-2)).Each of these affects the heating of the atmosphere and cooling on the earth’s *** atmospheric heating rates ranged from 1.8 to 3.7 K day*** formation of these SDS mainly resulted from the passage of cold fronts associated with low pressure systems in the Gobi and Taklamakan deserts,creating conditions for dust to rise into the atmosphere and move further downwind.

关键词： Dust storm PM_(10) Aerosol optical depth Radiative forcing VIIRS AERONET

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An integrated analysis of air pollution from US coal-fired power plants

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Geoscience Frontiers 2023年第2期14卷 204-216页

作者： mikalai filonchyk Michael P.Peterson Faculty of Geomatics Lanzhou Jiaotong UniversityLanzhou 730070China Gansu Provincial Engineering Laboratory for National Geographic State Monitoring Lanzhou 730070China Department of Geography/Geology University of Nebraska OmahaOmahaNE 68182USA

The United States is one of the world’s leaders in electricity production,generating about 4116 billion kWh in 2021,of which coal accounted for 21.8%of the *** study applies an integrated approach using both terrestrial and satellite data to specifically examine emissions from coal-fired power plants and its spatial *** study also highlights the effectiveness of government policies to reduce *** was found that emission of pollutants from the country’s energy sector has been steadily declining,with annual emissions of sulfur dioxide(SO_(2))and nitrogen oxides(NOx)decreasing from the US electric power sector between 1990 and 2020 by 93.4%and 84.8%,respectively,and carbon dioxide(CO_(2))by 37%between 2007 and *** overall emissions from coal-fired power plants are declining,some individual plants have yet to install environmental equipment to control *** to US government data,major emitters of SO_(2),NO_(x),and CO_(2) in the US are the Martin Lake power plant in East Texas,the Labadie power plant near ***,Missouri,and the James H Miller Jr plant near Birmingham,*** study also integrates TROPOMI satellite data to detect point emissions from individual power *** the highest levels of measured pollutants were over the country’s major cities and areas of fossil fuel extraction,TROPOMI could clearly distinguish the pollution caused by power plants in more rural *** the US has made great strides in reducing emissions from coal-fired power plants,these plants still represent a major source of pollution and remain a major *** eliminating coal as a power source will be difficult with the higher power demands resulting from the transition to electric automobiles.

关键词： Coal-fired power plants Emissions TROPOMI Air pollution Sulfur dioxide Nitrogen oxides

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Trends in aerosol optical properties over Eastern Europe based on MODIS-Aqua

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Geoscience Frontiers 2020年第6期11卷 2169-2181页

作者： mikalai filonchyk Volha Hurynovich Haowen Yan Faculty of Geomatics Lanzhou Jiaotong UniversityLanzhou 730070China Gansu Provincial Engineering Laboratory for National Geographic State Monitoring Lanzhou 730070China

This study provides characteristics of aerosol columnar properties,measured over ten countries in Eastern Europe from 2002 to *** optical depth(AOD)and Angstrom exponent(AE)were obtained with the Moderate Resolution Imaging Spectroradiometer(MODIS)Collection 6.1 merged Dark Target and Deep Blue aerosol *** product is validated using ground-based Aerosol Robotic Network(AERONET)situated at Minsk,Belsk,Moldova and *** results showed that 76.15%of retrieved AOD data are within the expected *** was established that 64.2%of AOD points are between 0 and 0.2 and 79.3%of all AE points are over *** AOD values in the region vary from 0.130±0.04(Moldova)to 0.193±0.03(Czech Republic)with mean value in the region 0.162±*** mean AOD(AE)values were at the maximum during the summer from 0.231±0.05(1.482±0.09 in winter)to minimum 0.087±0.04 during the winter(1.363±0.17 in summer).Gradual AOD reduction is observed in all countries with annual trend from-0.0050(Belarus)to-0.0029(Russia).Finally,the relationship between AOD and AE was studied to classify various aerosol types and showed seasonal non-uniformity of their contribution depending on variation in *** entire region is under significant impact of various aerosol types,including clean continental(CC),mixed(MX)and anthropogenic/burning(AB)aerosols types that are at 59.77%,24.72%,and 12.97%*** results form an important basis for further regional studies of air quality and distribution of sources of pollution.

关键词： MODIS AERONET Eastern Europe Aerosol optical depth Aerosol-type classification

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基于连续函数近似法的空气污染源管控（英文）

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Journal of Measurement Science and Instrumentation 2016年第4期7卷 375-378页

作者： filonchyk mikalai 闫浩文 Hurynovich Volha Stroi Anton 兰州交通大学环境与市政工程学院甘肃兰州730070 兰州交通大学测绘与地理信息学院甘肃兰州730070 兰州交通大学数理学院甘肃兰州730070

本文根据空气污染源强度对杂质浓度影响的一致性评价方法,在几个固定点监测空气质量。在对空气中杂质传播过程的描述当中运用Duhamel定理的数值模拟。这种方法以合理复杂性的数学模型为基础,使模拟结果的准确性得到增加。根据静止或移... 详细信息

本文根据空气污染源强度对杂质浓度影响的一致性评价方法,在几个固定点监测空气质量。在对空气中杂质传播过程的描述当中运用Duhamel定理的数值模拟。这种方法以合理复杂性的数学模型为基础,使模拟结果的准确性得到增加。根据静止或移动控制点中杂质浓度的测量结果,使污染物在大气中传播的逆问题通过顺序函数的近似值得以解决,且该解决方案以数字滤波器的形式提出。

关键词：空气污染反问题连续函数近似法湍流扩散方程

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