Table of Contents
International Journal of Atmospheric Sciences
Volume 2015, Article ID 198704, 23 pages
http://dx.doi.org/10.1155/2015/198704
Research Article

Simulation of Severe Local Storm by Mesoscale Model MM5 and Validation Using Data from Different Platforms

1Birbhum Institute of Engineering and Technology, Suri 731101, India
2School of Environmental Studies, Jadavpur University, Kolkata 700032, India
3Regional Meteorological Centre, Government of India, 4 Duel Avenue, Alipore, Kolkata 700027, India

Received 30 September 2014; Revised 14 January 2015; Accepted 20 January 2015

Academic Editor: Luiz Machado

Copyright © 2015 Prosenjit Chatterjee et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

During premonsoon season (March to May) convective developments in various forms are common phenomena over the Gangetic West Bengal, India. In the present work, simulation of wind squall on three different dates has been attempted with the help of mesoscale model MM5. The combination of various physical schemes in MM5 is taken as that found in a previous work done to simulate severe local storms over the Gangetic West Bengal. In the present study the model successfully simulates wind squall showing pressure rise, wind shift, wind surge, temperature drop, and heavy rainfall, in all cases. Convective cloud development and rainfall simulation by the model has been validated by the corresponding product from Doppler Weather Radar located at Kolkata and TRMM satellite product 3B42 (V6), respectively. It is found that the model is capable of capturing heavy rainfall pattern with up to three-hour time gap existing between simulation and observation of peak rainfall occurrence. In all simulations there is spatial as well as temporal shift from observation.