Record Details

Assimilation of significant wave height from EnviSAT in coastal wave model using optimum interpolation at variable wave height ranges

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Assimilation of significant wave height from EnviSAT in coastal wave model using optimum interpolation at variable wave height ranges
 
Creator Bhowmick, Suchandra A
Kumar, Raj
Chaudhuri, Sutapa
 
Subject Altimeter
Wave prediction
Assimilation
Prediction
Topography
 
Description 22-26
In this study significant wave height
(SWH) from EnviSAT radar altimeter data has been assimilated in the coastal ocean
wave model SWAN (Simulating WAve Near-shore). Optimum interpolation (OI)
technique has been used for this purpose. A detailed validation of the model
and the EnviSAT observations has been carried out prior to the assimilation for
the determination of the error covariance matrix of prediction and observation.
Validation of the EnviSAT data and the model is done using the in-situ buoy
observations and Jason-1 altimeter data. Validation exercise revels that at
various ranges of SWH the error covariance changes significantly for both the
model and the altimeter measurements. Result shows that the assimilation of
EnviSAT data at various ranges of SWH, using optimum interpolation scheme in
SWAN model improves the prediction by 15-20%. Also there is reduction in the
RMSE of SWH by 0.2 m. Multi-mission altimetric data assimilation using the same
technique can improve the model prediction significantly.
 
Date 2014-02-05T09:29:24Z
2014-02-05T09:29:24Z
2014-01
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/26427
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(1) [January 2014]