Tropical Convective Cloud Characterization Using Ground-Based Microwave Radiometric Observations

Characterization of the microphysical and thermodynamical properties of convective events over the tropical coastal station Thiruvananthapuram (TVM) has been carried out based on multiyear microwave radiometer profiler observations. The analyses have been extended to develop a methodology to identif...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2016-07, Vol.54 (7), p.3774-3779
Main Authors: Renju, R., Suresh Raju, C., Mathew, Nizy, Kirankumar, N. V. P., Krishna Moorthy, K.
Format: Article
Language:English
Subjects:
Brackish
Brightness temperature
Cascading style sheets
Channels
Clouds
Coastal
Convection
convective systems (CSs)
Genesis
Ground-based observation
Marine
Materials requirements planning
Methodology
microwave radiometer
Microwave radiometry
Monsoons
Rain
Sea measurements
Stations
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Summary:Characterization of the microphysical and thermodynamical properties of convective events over the tropical coastal station Thiruvananthapuram (TVM) has been carried out based on multiyear microwave radiometer profiler observations. The analyses have been extended to develop a methodology to identify convective events, which is based on the radiometric brightness temperature (T b ) difference threshold, at 30 and 22.23 GHz channels, and the results are compared with reflectivity and rainfall intensity deduced from concurrent and collocated disdrometer measurements. Eighty-four of such convections were identified using the aforementioned methodology over the station during 2010-2013, i.e., both for pre- and post-Indian summer monsoon months, and further evaluated by computing their stability indexes. The occurrence of convective systems peaks in the afternoon and early-morning hours with genesis, respectively, over the land and the sea.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2016.2527099