Multisensor Validation Of Ers-1 Sar Wave Mode And Altimeter-Derived Significant Wave Heights Using Topex, Geosat And Seasat Data
A comparison of significant wave heights H s was performed using satellite altimeter data available between 1978 to 1994 from SEASAT, GEOSAT, ERS-1 and TOPEX. The purpose was to estimate the degree of accuracy between the different instruments. Statistical properties of H s as obtained from the alti...
| Main Authors: | , , |
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.54.4500 http://www.mpimet.mpg.de/privat/Mitarbeiter/heimbach.patrick/conf/ceos97_saralt.ps.gz |
| Summary: | A comparison of significant wave heights H s was performed using satellite altimeter data available between 1978 to 1994 from SEASAT, GEOSAT, ERS-1 and TOPEX. The purpose was to estimate the degree of accuracy between the different instruments. Statistical properties of H s as obtained from the altimeters are found to be compatible with those from in situ measurements in the North Atlantic. All H s data sets are fitted to appropriate distribution functions. Furthermore, an assessment and validation of H s retrieved from ERS-1 SAR Wave Mode (SWM) data with spatially and temporally collocated altimeter data from ERS-1 and TOPEX during 1994 is given. The values of SWM-retrieved monthly mean H s are generally higher than those of the ERS-1 altimeter and lower than those of the TOPEX altimeter. The SWM-retrieved H s agree better with TOPEX altimeter data, than with the ERS-1 altimeter data. Regional comparison are performed and an attempt is made to investigate the differing behaviour of p. |
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