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Proceedings Paper

Precipitation-aerosol relationship over the Indian region during drought and excess summer monsoon years
Author(s): Sajani Surendran; Kavirajan Rajendran; Arya V. B.
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Paper Abstract

This study investigates the aerosols-rainfall interaction during Indian summer monsoon and characterizes their difference in drought and excess summer monsoon years, based on MODIS (MODerate Resolution Imaging Spectro-radiometer) derived Aerosol Optical Depth (AOD) at 550 nm. AOD has been estimated using Level-2 MODIS Terra Data Version 6. AOD in drought years is found to be higher over India compared to excess monsoon years. The total effect of aerosols causes reduction of summer rainfall but with distinct differences in their impact during strong and weak summer monsoon years, due to the changes in clouds, radiation, large-scale circulation, and convection. Aerosol and cloud characteristics exhibit strong association to rainfall variability in interannual time scales. Variability in cloud effective radius and cloud optical thickness is found to be consistent with aerosol effect.

Paper Details

Date Published: 3 May 2016
PDF: 6 pages
Proc. SPIE 9882, Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions VI, 98820Q (3 May 2016); doi: 10.1117/12.2229447
Show Author Affiliations
Sajani Surendran, CSIR Fourth Paradigm Institute (India)
Kavirajan Rajendran, CSIR Fourth Paradigm Institute (India)
Arya V. B., CSIR Fourth Paradigm Institute (India)

Published in SPIE Proceedings Vol. 9882:
Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions VI
Tiruvalam N. Krishnamurti; Madhavan Nair Rajeevan, Editor(s)

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