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Proceedings Paper

Development and structure of an oceanic squall line system during the South China Sea monsoon experiment
Author(s): Jian-Jian Wang
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Paper Abstract

A primary goal of the South China Sea Monsoon Experiment (SCSMEX, 1998), a major field campaign of Tropical Rainfall Measuring Mission (TRMM), is to define the initiation, structure, evolution and dynamics of precipitation processes associated with the onset of the South China Sea (SCS) summer monsoon. Information from SCSMEX will be used for initialization and validation of cloud-resolving models and passive microwave retrieval algorithms. In this study, dual-Doppler radar analysis technique combining with the polarimetric radar data analysis are used to investigate the development and structure of a vigorous squall line system observed on 24 May 1998. Comparing to the tropical squall lines observed in other regions, this narrow squall line system had some interesting features including: 1) with maximum reflectivity over 55 dBZ, this squall line system has little stratiform rain, 2) the small area of stratiform rain was ahead instead of trailing to the convective line, and 3) rather than a narrow ribbon of vertical velocity maximum near the leading edge, this system has an elongate vertical velocity maximum in the rear part of the system. Polarimetric radar inferred microphysical and rainfall properties are placed in the context of the mesoscale morphology and dual-Doppler derived kinematics for this vigorous squall line.

Paper Details

Date Published: 30 April 2003
PDF: 12 pages
Proc. SPIE 4894, Microwave Remote Sensing of the Atmosphere and Environment III, (30 April 2003); doi: 10.1117/12.469126
Show Author Affiliations
Jian-Jian Wang, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 4894:
Microwave Remote Sensing of the Atmosphere and Environment III
Christian D. Kummerow; JingShang Jiang; Seiho Uratuka, Editor(s)

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