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Estimation of tropical cyclone heat potential in the Bay of Bengal and its role in the genesis and intensification of storms

DRS at CSIR-National Institute of Oceanography

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Title Estimation of tropical cyclone heat potential in the Bay of Bengal and its role in the genesis and intensification of storms
 
Creator Sadhuram, Y.
Murthy, T.V.R.
Somayajulu, Y.K.
 
Subject Bay of Bengal
cyclone heat potential
sea surface height
heat potential
 
Description In the present study, cyclone heat potential (CHP) in the Bay of Bengal has been estimated for different seasons using Levitus climatology. A good association was noticed between CHP and the efficiency of intensification (i.e the ratio between severe storms to total number of storms (in 5 degrees x 5 degrees grid), for the period, 1877-1977. CHP has been estimated using CTD data collected along the transects 88 degrees E (4 degrees - 20 degrees N) and 11.5 degrees N (81 degrees – 92 degrees E) during 1993-96 under pre-, during and post- SW monsoon seasons. These estimates are compared with those obtained from TOPEX/Poseidon sea surface height anomalies (SSHA) and TMI (Tropical Rainfall Measuring Mission Microwave Imager) SST using a two layer gravity model. The above estimates are also compared in the Andaman Sea for the 1996 post– SW monsoon season. It appears that the later method underestimates the CHP in the regions of anti cyclonic gyre (ACG). A relation between CHP and SSHA is proposed for the Bay of Bengal which shows a high correlation of 0.79 (N = 67; significant at greater than 99% level) using the CTD data.
 
Date 2006-07-10T05:00:46Z
2006-07-10T05:00:46Z
2006
 
Type Journal Article
 
Identifier Indian Journal of Marine Sciences, Vol. 35(2), 132-138pp.
http://drs.nio.org/drs/handle/2264/193
 
Language —
 
Rights This digital version of the paper hosted with the permission from IJMS/NISCAIR.
http://www.niscair.res.in
 
Format 199998 bytes
application/pdf
 
Publisher NISCAIR, CSIR