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Empirical algorithm developed for SAR/ASAR wave mode data

Li, Xiao-Ming and Lehner , Susanne (2010) Empirical algorithm developed for SAR/ASAR wave mode data. In: Proceedings of SEASAR 2010 Workshop (ESA-SP 679 (on CD-ROM)), pp. 1-5. ESA Communication Production Office. SEASAR 2010 Workshop, 25.-29. Jan. 2010, Frascati, Italy. ISBN 9789292212438.

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Abstract

The empirical algorithm CWAVE has been developed to derive integral wave parameters, e.g., significant wave height (SWH), mean wave period and swell wave height, from SAR/ASAR wave mode data. One can obtain full sea state measurements from SAR data using this empirical algorithm, without the need for first guess information. The CWAVE type algorithms implemented on two different kinds of SAR data (i.e., reprocessed ERS-2/SAR wave mode and ENVISAT/ASAR wave mode data), are denoted as CWAVE_ERS and CWAVE_ENV respectively. In the present paper, we demonstrate the development and validation of the CWAVE_ENV algorithm suitable for ENVISAT/ASAR wave mode data. A globally distributed dataset of 25,000 pairs of ASAR wave mode images and collocated ECMWF analysis model results from December, 2006 is used for CWAVE_ENV model parameters tuning. With respect to the CWAVE_ENV empirical algorithm validation, SWH and mean wave period derived from ASAR wave mode data are compared to the ECMWF reanalysis wave model, the German Weather Service (DWD) model forecast results and NOAA buoy measurements. Validation results show that the integrated wave parameters derived by CWAVE_ENV algorithm provide a reliable estimation of significant wave height with scatter index less than 20 %.

Document Type:Conference or Workshop Item (Speech)
Title:Empirical algorithm developed for SAR/ASAR wave mode data
Authors:
AuthorsInstitution or Email of Authors
Li, Xiao-MingXiao.Li@dlr.de
Lehner , SusanneUNSPECIFIED
Date:2010
Journal or Publication Title:Proceedings of SEASAR 2010 Workshop
Page Range:pp. 1-5
Editors:
EditorsEmail
Sawaya-Lacoste, Huguette ESA
Ouwehand, L.ESA
Publisher:ESA Communication Production Office
Series Name:Proceedings of SeaSAR 2010
ISBN:9789292212438
Status:Published
Keywords:SAR, ASAR, wave mode data, empirical algorithm, integral wave parameters
Event Title:SEASAR 2010 Workshop
Event Location:Frascati, Italy
Event Type:international Conference
Event Dates:25.-29. Jan. 2010
Organizer:ESA
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Entwicklung und Erprobung von Verfahren zur Gewässerfernerkundung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Marine Remote Sensing
Deposited By: Bärbel Bolowski
Deposited On:22 Nov 2010 15:56
Last Modified:03 Apr 2013 15:07

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