10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
Abstract View
Estimation and Sources of Cloud Water SO4 and NO3 Aerosols from Rainwater over High Altitude Station
YANG LIAN, P.S.P. Rao, G. Pandithurai, IITM, Pune
Abstract Number: 1222 Working Group: Source Apportionment
Abstract Western Ghats act as a hilly barrier for the monsoon clouds and it facilitates cloud dynamics by its orography, but aerosol composition and size play an equally major role into the cloud microphysics and their development, therefore in this present study an attempt has been made to estimate the aerosol mass concentration into the cloud. High altitude cloud station at Mahabaleshwar gives us a new opportunity to explore these relations during monsoon, as warm cloud touches to the ground here. Using multiple in-situ instruments, first time over the Western Ghats, we estimated the concentrations of SO4 and NO3 from rainwater into the cloud water by approximating wet scavenging percentage between 10-30% for initial and final phase rainfall from ACSM and source-apportioned three major contributing sources such as Vehicular, Thunder Lightning, and Long-range transport. The Lightning Location Network and CWT analysis result show that during the initial phase of monsoon collected rainwater, the aerosol composition of SO4 and NO3 are mostly affected by local and thunder lightning emissions whereas at departure phase collected rainwater mainly being influenced by local and long-range transport from Metropolitan city (Mumbai).