Impact Assessment of Aerosol Optical Depth on Rainfall in Indian Rural Areas

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-03-29 DOI:10.1007/s41810-022-00134-9

Sneha Gautam, Janette Elizabeth, Alok Sagar Gautam, Karan Singh, Pullanikkat Abhilash

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引用次数: 18

Abstract

Aerosol significantly influences the life cycle of clouds and their formation. Many studies reported worldwide on anthropogenic aerosols and their impact on clouds and their optical properties. Atmospheric remote sensing provides the best way to estimate indirectly air quality surveillance and management in megacities of developing countries like India where many cities have elevated concentration profiles of air pollutants with inadequate coverage of spatial and temporal monitoring. The results of the study highlighted the impact on rainfall patterns due to aerosol optical depth (AOD) and fine particulate matter (PM2.5) for a total of 7 years (2015–2021) over five different Indian rural sites by using MODerate Resolution Imaging Spectroradiometer (MODIS). The AOD (550 nm) and PM2.5 were retrieved from the MODIS sensor Terra satellites and the MEERA 2 model, respectively. Also, we have analyzed in this study the relationship of AOD (550 nm) with PM2.5 and meteorological variables (temperature relative humidity and precipitation) over Indian rural sites during 2015–2021. The maximum concentration of AOD (550 nm) has been measured for Gandhi college (2.94 ± 0.44) and minimum for ARM college (0.01 ± 0.28), while the maximum concentration of PM2.5 has been measured for ARM College 296.37 (µg m⁻³) and minimum for Karunya University 0.02 (µg m⁻³). Also, the relation between AOD (550 nm) with total precipitation is measured positively for all locations except Gandhi college whereby PM2.5 associated with total precipitation is measured negatively for all locations except ARM college. Finally, the relationship between PM2.5 and AOD (550 nm) is measured positively in all selected locations except Singhad Institute. The maximum rainfall has been observed for monsoon months (June–August) and post-monsoon months (October) for all locations during the study period. The maximum total precipitation has been measured for Singhad 11,674.7 (mm) and the minimum for Karunya University 4563.41 (mm). However, the results of the study indicated that there was no direct trend observed in AOD in five different selected rural Indian sites.

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气溶胶光学深度对印度农村地区降雨的影响评估

气溶胶显著影响云的生命周期及其形成。世界各地的许多研究报告了人为气溶胶及其对云的影响及其光学特性。大气遥感提供了间接估计印度等发展中国家特大城市空气质量监测和管理的最佳方法，在印度，许多城市的空气污染物浓度分布较高，空间和时间监测覆盖率不足。该研究的结果强调了使用MODate分辨率成像光谱仪（MODIS）在印度五个不同农村地区总共7年（2015-2021）内，气溶胶光学深度（AOD）和细颗粒物（PM2.5）对降雨模式的影响。AOD（550nm）和PM2.5分别来自MODIS传感器Terra卫星和MEERA 2模型。此外，我们在本研究中分析了2015-2021年印度农村地区AOD（550 nm）与PM2.5和气象变量（温度、相对湿度和降水量）的关系。甘地学院测得AOD的最大浓度（550 nm）（2.94 ± 0.44），ARM学院最低（0.01 ± 0.28），而ARM学院的PM2.5最高浓度为296.37（µg m−3），而Karunya大学的PM2.5最低浓度为0.02（µg m-3）。此外，除甘地学院外，所有地点的AOD（550nm）与总降水量之间的关系都是正测量的，而除ARM学院外，与总降水相关的PM2.5则是负测量的。最后，在除Singhad研究所外的所有选定地点，PM2.5和AOD（550nm）之间的关系都得到了正测量。在研究期间，所有地点的季风月（6月至8月）和季风后月（10月）都观测到了最大降雨量。Singhad测得的最大总降水量为11674.7（mm），Karunya大学测得的最小降水量为4563.41（mm）。然而，研究结果表明，在五个不同的印度农村地区，没有观察到AOD的直接趋势。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.