Comparison of gridded multi-mission and along-track mono-mission satellite altimetry wave heights with in situ near-shore buoy data.

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dc.contributor.author Shanas, P.R.
dc.contributor.author SanilKumar, V.
dc.contributor.author Hithin, N.K.
dc.date.accessioned 2014-05-06T11:32:57Z
dc.date.available 2014-05-06T11:32:57Z
dc.date.issued 2014
dc.identifier.citation Ocean Engineering, vol.83; 2014; 24–35.
dc.identifier.uri http://drs.nio.org/drs/handle/2264/4521
dc.description.abstract The applicability of altimeter data for the coastal region is examined by comparing the gridded multi-mission and along-track mono-mission significant wave height (SWH) data with the in situ buoy measurements at four stations off the east and west coasts of India. Among all of the satellites, a greater number of collocated points and better correlation were found for Jason-2. A comparison of the SWH data from multi-mission products (Jason-1, Jason-2, Envisat, and ERS-2) obtained from AVISO with the measured buoy data shows that all of the satellites overestimated the SWH. Applying a correction factor of 0.75, 0.70 and 0.69 to the altimeter data for stations 1, 2 and 4, respectively, resulted in close agreement with the buoy data (correlation coefficient ~0.9–0.96). Monthly averaged buoy and altimeter SWH values show convincing correlation ranging from 0.97 to 0.98 for three stations. The smallest correlation coefficient (0.6) was found at station 3, where the selected grid points are located close to the coast and are influenced by land contamination and wave decay effects. For waves with a SWH<0.5 m, the correlation coefficient is sparingly low for all stations, which underlines the fact that the altimeter observations for SWH<0.5 m are unreliable.
dc.language.iso en
dc.publisher Elsevier
dc.rights An edited version of this paper was published by Elsevier. Copyright [2014] Elsevier
dc.subject satellite altimetry
dc.subject significant wave height
dc.subject coastal boundary layer
dc.subject wave effects
dc.title Comparison of gridded multi-mission and along-track mono-mission satellite altimetry wave heights with in situ near-shore buoy data.
dc.type Journal Article


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