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Using the Along-Track Altimeter Data for a Verifi cation of the Numerical Wave Models
 
PIIS020596140002353-9-1
DOI10.31857/S020596140002353-9
Publication type Article
Status Published
Authors
V. Polnikov 
Affiliation: Institute of Atmospheric Physics A.M. Obukhov RAS
Address: Russian Federation
F. Pogarsky
Affiliation: Institute of Atmospheric Physics A.M. Obukhov RAS
Address: Russian Federation
N. Zilitinkevich
Affiliation: Institute of Atmospheric Physics A.M. Obukhov RAS
Address: Russian Federation
A. Kubryakov
Affiliation: Marine Hydrophysical Institute
Address: Russian Federation
Journal nameIssledovanie Zemli iz kosmosa
EditionIssue 4
Pages20-31
AbstractUsing the AVISO altimetry data for the period 2013–2016, the technology is realized for extracting along-track altimeter data in their binding to the data of irregular buoy measurements and numerical wave-simulation data on a regular space-time grid. The latter data were obtained by us with the two wave models: WAM and its modifi ed version – WAM-M. A joint and separate calibration of the satellite data for each satellite was carried out, using a system of 41 buoys. Then, both calibrations were used to estimate the mean-square-root errors (RMSE) for deviations of the wind-wave simulation data in the Indian Ocean from the corresponding altimetry data. It is established that the type of calibration does not signifi cantly aff ect the investigated RMSE, but the RMS values themselves have a signifi cant variability over the space. The possibility is shown for establishing advantages of one numerical model over other, by using values of RMSE both in various zones of the Indian Ocean and the ocean as a whole. The reasons for intermittency of the RMSE values for the models used are discussed, in dependence on the zone of the Indian Ocean.
Keywordsaltimetry, along-track data, calibration, verifi cation of the wave model
Received22.12.2018
Publication date22.12.2018
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