哈里亚纳邦因Covid-19封锁导致的气溶胶光学深度(AOD)变化作为空气质量指标

Dharmendra Singh, C. Nanda
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引用次数: 5

摘要

空气质量是关系到人体健康的重要参数。气溶胶光学深度(AOD)是表征空气中柱状综合颗粒物的重要变量,可用于空气质量评价。因此,在目前的研究中,利用空间分辨率为3公里的中分辨率成像光谱仪(MODIS)获得的AOD作为空气质量的指标。结果表明,2020年4月封锁期间,与2016年至2019年同期相比,AOD浓度下降了35%。这表明,在新冠肺炎疫情期间,哈里亚纳邦的空气质量得到了改善。与2019年相比,哈里亚纳邦NCR地区在封锁期间的颗粒物(PM2.5)浓度降低了68%,这也印证了这一点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Aerosol Optical Depth (AOD) Variation Over Haryana Due to Lockdown Amid Covid-19 as an Indicator of Air Quality
Air quality is an important parameter related to the human health. Aerosol Optical Depth (AOD) is an important variable that indicates column integrated particulate matter in the air and used for air quality assessment. Thus in the current study AOD derived from Moderate Resolution Imaging Spectroradiometer (MODIS) at a spatial resolution of 3 km have been used as an indicator of air quality. Results indicate that the AOD concentration has decreased by 35% during the lockdown period in the month of April 2020 as compared to the years 2016 to 2019 in the same month. This indicates that the air quality was improved during the lockdown amid COVID-19 over the Haryana state. The same was conformed from the reduction of Particulate Matter (PM2.5) concentration by 68% during the lockdown period as compared to the year 2019 for NCR region of Haryana.
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