Intra-seasonal and annual variation of aerosol chemical species retrieved from MERRA-2 model over a semi-arid region

Author(s)	L. Siva Sankara Reddy, K. Narasimhulu, K. Raja Obul Reddy, G. Balakrishnaiah, K. Rama Gopal
Country	India
Abstract	The present paper investigates the intra-seasonal and annual variations of different aerosol species retrieved from Modern-Era Retrospective analysis for Research and Applications, (MERRA-2) model over a semi-arid region, Anantapur, in southern peninsular India during 2013 to 2018. The intra-seasonal mean total aerosol optical depth was found to be highest in monsoon (0.35 ± 0.06), and summer (0.30± 0.04) during the study period. The SO4 aerosol optical depth was found to be 0.17± 0.02, 0.16 ± 0.02, 0.11 ± 0.01, 0.13 ± 0.02 during winter, summer, monsoon and post-monsoon, respectively. According to the findings, SO4 aerosol optical contributed the most to the total aerosol optical depths in both the summer and winter, indicating that anthropogenic aerosols predominated at that time.
Keywords	Total aerosol optical depths, anthropogenic aerosols, MERRA-2, semi-arid region.
Field	Physical Science
Published In	Volume 16, Issue 1, January-June 2025
Published On	2025-01-23
Cite This	Intra-seasonal and annual variation of aerosol chemical species retrieved from MERRA-2 model over a semi-arid region - L. Siva Sankara Reddy, K. Narasimhulu, K. Raja Obul Reddy, G. Balakrishnaiah, K. Rama Gopal - IJAIDR Volume 16, Issue 1, January-June 2025.

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