Open AccessInvestigation of features of May, 2001 tropical cyclone over the Arabian Sea through IRS-P4 and other satellite data
Author(s) -
P. N. Mahajan,
R. M. Khaladkar,
S. G. Narkhedkar,
Sathy Nair,
Amita Prabhu,
M. Mahakur
Publication year - 2012
Publication title -
mausam
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.243
H-Index - 12
ISSN - 0252-9416
DOI - 10.54302/mausam.v63i1.1463
Subject(s) - tropical cyclone , cyclone (programming language) , meteorology , climatology , storm , satellite , vorticity , environmental science , wind speed , vortex , geology , geography , physics , computer science , field programmable gate array , astronomy , computer hardware
In this paper, utility of satellite derived atmospheric motion vectors and geophysical parameters is brought out to discern appropriate signals for improving short-range forecasts in respect of development/dissipation of tropical cyclones over the Indian region. Results of a particular case study of May, 2001 cyclone, which formed in the Arabian Sea are reported. Analysis of wind field with input of modified cloud motion vectors and water vapour wind vectors is performed utilizing Optimum Interpolation (OI) technique at 850 and 200 hPa for finding dynamical changes such as vorticity, convergence and divergence for the complete life period of this cyclone. Simultaneously, variations in geophysical parameters obtained from IRS-P4 and TRMM satellites in ascending and descending nodes are compared with dynamical variations for discerning some positive signals to improve short range forecasts over the Indian region. The enhancement of cyclonic vorticity at 200 hPa over larger area surrounding center of cyclone was observed from 26 to 28 May 2001 which gave a positive signal for dissipation of storm.