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Buoy data assimilation to improve wave height assessment in Bay of Bengal during monsoon seasons

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Title Buoy data assimilation to improve wave height assessment in Bay of Bengal during monsoon seasons
 
Creator Kalyani, M
Latha, G
Sannasiraj, S A
Venkatesan, R
 
Subject Significant wave height
WAM
Bay of Bengal
Moored buoy
Optimum interpolation
Assimilation
 
Description 1083-1090
Significant wave height assessment in Bay of Bengal derived from third generation Wave Model (WAM cycle 4) has been improved by assimilating with continuous three hourly data from five moored buoys of National Institute of Ocean Technology using optimum interpolation technique. Covariance based weight function (gain) used in the study captures the model physics behind wind-wave process while distributing the errors at any buoy location. Gain composition at different buoy locations, due to assimilation of each buoy has been reported for both southwest (July) and northeast (November) monsoons, for year 2004. Qualitative and quantitative improvement in significant wave height due to buoy data assimilation during these two seasons are presented with reference to changing wind and wave characteristics. The order of improvement is found to be proportional to the magnitude of deviations found with respect to the measurements. Considerable model area has been influenced by assimilation.
 
Date 2017-05-29T10:42:36Z
2017-05-29T10:42:36Z
2017-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/42020
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.46(06) [June 2017]