Statistical Analysis of Ocean Wave and Wind Parameters Retrieved with an Empirical Sar Algorithum
نویسندگان
چکیده
A global dataset of two years (September 1998 to December 2000) of ERS SAR data was reprocessed to more than one million SAR imagettes. Met ocean Parameters like significant ocean wave height (Hs), wind speed (U10) and mean wave period (Tm-10) are derived from the SAR images using a new empirical algorithm CWAVE [1]. The results are compared to collocated ERS altimeter data and in Situ measurements from NOAA buoys and observations taken onboard the vessel Polarstern. It is shown that the SAR derived Hs is comparable in quality to altimeter measurements and can thus be used for real time assimilation.
منابع مشابه
Ocean Wind and Current Retrievals Based on Satellite SAR Measurements in Conjunction with Buoy and HF Radar Data
A total of 168 fully polarimetric synthetic-aperture radar (SAR) images are selected together with the buoy measurements of ocean surface wind fields and high-frequency radar measurements of ocean surface currents. Our objective is to investigate the effect of the ocean currents on the retrieved SAR ocean surface wind fields. The results show that, compared to SAR wind fields that are retrieved...
متن کاملValidation of Coastal Wind and Wave Fields by High Resolution Satellite Data
methods to derive wind speed and the sea state from Synthetic Aperture Radar (SAR) satellite data are presented and applied for use in high resolution numerical modeling for coastal application. The new radar satellite TerraSAR-X (TS-X) images the sea surface with a high resolution up to 1m. So not only the wind field and integrated sea state parameters but also individual ocean waves with wave...
متن کاملWind-wave-induced velocity in ATI SAR ocean surface currents: First experimental evidence from an airborne campaign
Conventional and along-track interferometric (ATI) Synthetic Aperture Radar (SAR) senses the motion of the ocean surface by measuring the Doppler shift of reflected signals. Measurements are affected by a Wind-wave-induced Artifact Surface Velocity (WASV) which was modeled theoretically in past studies and has been estimated empirically only once before with Envisat ASAR by Mouche et al. (2012)...
متن کاملStatistical Analysis and Intercomparison of Global Ers-1 Sar Wave Mode Spectral Retrievals Using Wam Model and Buoy Data
SPECTRAL RETRIEVALS USING WAM MODEL AND BUOY DATA P. Heimbach, S. Hasselmann, K. Hasselmann and M. Toporek Max-Planck-Institut f ur Meteorologie, Bundesstra e 55, D-20146 Hamburg, Germany Phon: + 49 / 40 / 4 11 73 3 77, Facs: + 49 / 40 / 4 11 73 2 98 E-mail: [email protected] Abstract A global statistical intercomparison was carried out for the period January 1993 to December 1995 between wave ...
متن کاملGlobal wind speed retrieval from SAR
The global availability of synthetic aperture radar (SAR) wave mode data from the European Remote Sensing (ERS) satellites ERS-1 and ERS-2, as well as ENVISAT, allows for the investigation of the wind field over the ocean on a global and continuous basis. For this purpose, 27 days of ERS-2 SAR wave mode data were processed, representing a total of 34 310 imagettes of size 10 km 5 km, available ...
متن کامل