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Trends in aerosol optical properties over Eastern Europe based on MODIS-Aqua
Geoscience Frontiers ( IF 8.5 ) Pub Date : 2020-04-08 , DOI: 10.1016/j.gsf.2020.03.014
Mikalai Filonchyk , Volha Hurynovich , Haowen Yan

This study provides characteristics of aerosol columnar properties, measured over ten countries in Eastern Europe from 2002 to 2019. Aerosol optical depth (AOD) and Ångström exponent (AE) were obtained with the Moderate Resolution Imaging Spectroradiometer (MODIS) Collection 6.1 merged Dark Target and Deep Blue aerosol product. The product is validated using ground-based Aerosol Robotic Network (AERONET) situated at Minsk, Belsk, Moldova and Kyiv. The results showed that 76.15% of retrieved AOD data are within the expected error. It was established that 64.2% of AOD points are between 0 and 0.2 and 79.3% of all AE points are over 1. Mean 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±0.05. Seasonal mean AOD (AE) values were at the maximum during the summer from 0.231±0.05 (1.482 ±0.09 in winter) and 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 sources. The entire region is under significant impact of various aerosol types, including clean continental (СС), mixed (MX) and anthropogenic/burning (AB) aerosols types that are at 59.77%, 24.72%, and 12.97% respectively. These results form an important basis for further regional studies of air quality and distribution of sources of pollution.



中文翻译:

基于MODIS-Aqua的东欧气溶胶光学特性趋势

这项研究提供了2002年至2019年在东欧10个国家/地区测量的气溶胶柱状特性的特征。气溶胶光学深度(AOD)和Ångström指数(AE)是通过中等分辨率成像光谱仪(MODIS)6.1合并暗靶物和深蓝色气雾剂产品。该产品已通过位于明斯克,贝尔斯克,摩尔多瓦和基辅的地面气溶胶机器人网络(AERONET)进行了验证。结果表明,检索到的AOD数据的76.15%在预期的误差内。已确定64.2%的AOD点在0到0.2之间,而79.3%的所有AE点都超过1。该区域的平均AOD值从0.130±0.04(摩尔多瓦)到0.193±0.03(捷克共和国),平均值在0.162±0.05范围内。夏季的平均AOD(AE)季节性值最高,为0.231±0。05(冬季为1.482±0.09),冬季最低为0.087±0.04(夏季为1.363±0.17)。在所有国家中观察到AOD逐渐降低,并且年度趋势从-0.0050(白俄罗斯)到-0.0029(俄罗斯)。最后,研究了AOD和AE之间的关系以对各种气溶胶类型进行分类,并根据源的变化显示了其贡献的季节性非均匀性。整个地区受到各种气溶胶类型的重大影响,包括清洁大陆气溶胶(СС),混合气(MX)和人为/燃烧(AB)气溶胶类型,分别占59.77%,24.72%和12.97%。这些结果为进一步开展区域空气质量和污染源研究提供了重要依据。在所有国家中观察到AOD逐渐降低,并且年度趋势从-0.0050(白俄罗斯)到-0.0029(俄罗斯)。最后,研究了AOD和AE之间的关系以对各种气溶胶类型进行分类,并根据源的变化显示了其贡献的季节性非均匀性。整个地区受到各种气溶胶类型的重大影响,包括清洁大陆气溶胶(СС),混合气(MX)和人为/燃烧(AB)气溶胶类型,分别占59.77%,24.72%和12.97%。这些结果为进一步开展区域空气质量和污染源研究提供了重要依据。在所有国家中观察到AOD逐渐降低,并且年度趋势从-0.0050(白俄罗斯)到-0.0029(俄罗斯)。最后,研究了AOD和AE之间的关系以对各种气溶胶类型进行分类,并根据源的变化显示了其贡献的季节性非均匀性。整个地区受到各种气溶胶类型的重大影响,包括清洁大陆气溶胶(СС),混合气(MX)和人为/燃烧(AB)气溶胶类型,分别占59.77%,24.72%和12.97%。这些结果为进一步开展区域空气质量和污染源研究提供了重要依据。研究了AOD和AE之间的关系以对各种气溶胶类型进行分类,并根据源的变化显示了其贡献的季节性不均匀性。整个地区受到各种气溶胶类型的重大影响,包括清洁大陆气溶胶(СС),混合气(MX)和人为/燃烧(AB)气溶胶类型,分别占59.77%,24.72%和12.97%。这些结果为进一步开展区域空气质量和污染源研究提供了重要依据。研究了AOD和AE之间的关系以对各种气溶胶类型进行分类,并根据源的变化显示了其贡献的季节性不均匀性。整个地区受到各种气溶胶类型的重大影响,包括清洁大陆气溶胶(СС),混合气(MX)和人为/燃烧(AB)气溶胶类型,分别占59.77%,24.72%和12.97%。这些结果为进一步开展区域空气质量和污染源研究提供了重要依据。

更新日期:2020-04-21
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