Record Details

Simulation of coastal winds along the central west coast of India using the MM5 mesoscale model

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Simulation of coastal winds along the central west coast of India using the MM5 mesoscale model
 
Creator Pushpadas, D.
Vethamony, P.
Sudheesh, K.
George, S.
Babu, M.T.
Nair, T.M.B.
 
Subject atmospheric circulation
mesoscale features
monsoons
 
Description A high-resolution mesoscale numerical model (MM5) has been used to study the coastal atmospheric circulation of the central west coast of India, and Goa in particular. The model is employed with three nested domains. The innermost domain of 3 km mesh covers Goa and the surrounding region. Simulations have been carried out for three different seasons- northeast (NE) monsoon, transition period and southwest (SW) monsoon with appropriate physics options to understand the coastal wind system. The simulated wind speed and direction match well with the observations. The model winds show the presence of a sea breeze during the NE monsoon season and transition period, and its absence during the SW monsoon season. In the winter period, the synoptic flow is northeasterly (offshore) and it weakens the sea breeze (onshore flow) resulting in less diurnal variation, while during the transition period, the synoptic flow is onshore and it intensifies the sea breeze. During the northeast monsoon at an altitude of above 750 m, the wind direction reverses, and this is the upper return current, indicating the vertical extent of the sea breeze. A well-developed land sea breeze circulation occurs during the transition period, with vertical extension of 300 and 1,100 m, respectively.
 
Date 2010-11-29T07:40:05Z
2010-11-29T07:40:05Z
2010
 
Type Journal Article
 
Identifier Meteorology and Atmospheric Physics, vol.109(3-4); 91-106
http://drs.nio.org/drs/handle/2264/3747
 
Language en
 
Rights An edited version of this paper was published by Springer. This paper is for R & D pupose and Copyright [2010] Springer.
 
Publisher Springer