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Validation of satellite-derived tropical cyclone heat potential with in situ observations in the North Indian Ocean

DRS at CSIR-National Institute of Oceanography

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Title Validation of satellite-derived tropical cyclone heat potential with in situ observations in the North Indian Ocean
 
Creator Nagamani, P.V.
Ali, M.M.
Goni, G.J.
Dinezio, P.N.
Pezzullo, J.C.
UdayaBhaskar, T.V.S.
Gopalakrishna, V.V.
Nisha, K.
 
Subject cyclones
hurricanes
satellite sensing
CTD observations
heat transfer
bathythermographic data
 
Description Tropical cyclone heat potential (TCHP) is an important ocean parameter influencing cyclones and hurricanes. The best approach for computing TCHP is to use in situ measurements. However, since in situ data have both spatial and temporal limitations, there is a need for satellite-based estimations. One potential solution is to use sea surface height anomalies (SSHAs) from altimeter observations. However, any estimation derived from satellite measurements requires extensive regional validation. In this letter, we compare satellite-derived TCHP values with those estimated using in situ measurements of the North Indian Ocean collected during 1993–2009. All the available measurements collected from the conductivity temperature and depth (CTD) profiler, expendable CTD profiler (XCTD), bathythermograph (BT), expendable BT (XBT) and Argo floats were used to estimate in situ derived TCHP values. TCHP estimations from satellite observations and in situ measurements are well correlated, with coefficient of determination R sup(2) of 0.65 (0.76) and a scatter index (SI) of 0.33 (0.25) on a daily (monthly) basis for the North Indian Ocean.
 
Date 2012-05-28T09:22:10Z
2012-05-28T09:22:10Z
2012
 
Type Journal Article
 
Identifier Remote Sensing Letters, vol.3(7); 2012; 615-620
http://drs.nio.org/drs/handle/2264/4061
 
Language en
 
Rights The final and definitive form of the preprint has been published in the "Remote Sensing Letters" © 2012 Taylor & Francis; "Remote Sensing Letters" is available online at http://www.tandf.co.uk/journals with open URL of artilce : http://dx.doi.org/10.1080/01431161.2011.640959
 
Publisher Taylor & Francis