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Effect of Boundary Layer Dynamics on the Profiles of Rain Drop Size Distribution during Convective Rain
A MAITRA, G RAKSHIT, S JANA, R CHAKRABORTY
Published in Institute of Electrical and Electronics Engineers Inc.
2019
Volume: 16
   
Issue: 7
Pages: 1007 - 1011
Abstract
The profiles of rain microstructures have been investigated for different types of precipitation using microrain radar observations at a tropical location Kolkata (22.57° N, 88.37° E). A prominent dip in radar reflectivity ( Z ) profile has been observed near the boundary layer at high rain rates. This phenomenon is due to the break-up of raindrops into smaller sizes at around 2 km height during intense convective events. The boundary layer dynamics decides the dominance of one of the two processes, namely, coalescence and break-up of rain drops, and determines the drop size distribution profile near the boundary layer. A sharp gradient of vertical velocity at 1-2 km heights is responsible for enhanced drop break-up resulting in an increase in the small drop number density. © 2004-2012 IEEE.
About the journal
JournalData powered by TypesetIEEE Geoscience and Remote Sensing Letters
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
ISSN1545-598X