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Comparison of wind data from QuikSCAT and buoys in the Indian Ocean

DRS at CSIR-National Institute of Oceanography

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Title Comparison of wind data from QuikSCAT and buoys in the Indian Ocean
 
Creator Satheesan, K.
Sarkar, A.
Parekh, A.
RameshKumar, M.R.
Kuroda, Y.
 
Subject wind data
remote sensing
wind vectors
mooring buoys
performance assessment
wind speed
wind direction
 
Description The performance of QuikSCAT-derived wind vectors is evaluated using in-situ data from moored buoys over the Indian Ocean. The results show that the mean differences for wind speed and wind direction are 0.37 ms sup(-1) and 5.8 degrees, root mean square deviations are 1.57 ms sup(-1) and 44.1 degrees and corresponding coefficients of correlation are o.87 and 0.75, respectively. The matching between in-situ and satellite estimates seems to be better in the North Indian Ocean than in the Equatorial Indian Ocean. The effects of sea surface temperature and air-sea temperature difference on wind residuals were also investigated. In general, QuikSCAT is found to overestimate the winds. It is speculated that low wind speed during rain-free conditions and high wind speed, normally associated with rain, may be the reason for the less accurate estimation of the wind vector from QuikSCAT over the Indian Ocean.
 
Date 2008-01-31T11:10:37Z
2008-01-31T11:10:37Z
2007
 
Type Journal Article
 
Identifier International Journal of Remote Sensing, Vol.28; 2375-2382p.
http://drs.nio.org/drs/handle/2264/787
 
Language en
 
Rights The final and definitive form of the preprint has been published in the "International Journal of Remote Sensing" © 2007 Taylor & Francis; "International Journal of Remote Sensing" is available online at http://www.informaworld.com/
 
Publisher Taylor and Francis