Please use this identifier to cite or link to this item:
Title: Forecasting and nowcasting convective weather phenomena over southern peninsular India – Part I: Thunderstorms
Authors: Suresh, R
Keywords: Thunderstorm;Rain rate;Velocity spectrum width;Rainfall variability;Thermodynamic stability indices;Sea breeze;Convective available potential energy (CAPE);Radar reflectivity
Issue Date: Aug-2012
Publisher: NISCAIR-CSIR, India
PACS No.: 92.60.Wc; 92.60.Qx
Abstract: A few case studies of thunderstorms over Chennai and its neighbourhood have been discussed with its antecedent thermodynamic stability indices and parameters that are usually favourable for the development of convective clouds. As the forecast based on upper air data (radio sonde / radio wind and /or GPS sonde) is not time as well as location specific, data obtained from Doppler Weather Radar, Chennai have been used to issue location / time specific thunderstorm warnings especially for the aircraft operations from Chennai airport. Monitoring of sea breeze front propagation and velocity spectrum width data may help the forecaster to nowcast the development and movement of thunderstorms. Rainfall variability has been analysed using the radar reflectivity data based rain rate estimation and precipitation accumulation over a period of time. It is well understood from this analysis that fully calibrated radar and aptly fine tuned radar reflectivity (z) – rain rate (R) relationship will address the problem of inadequacy of rain gauges besides giving a better quality hydrological data (than that is being obtained through sparsely located surface rain gauges) which may be quite useful for the administrators and water resources managers.
Page(s): 421-434
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.41(4) [August 2012]

Files in This Item:
File Description SizeFormat 
IJRSP 41(4) 421-434.pdf2 MBAdobe PDFView/Open

Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.