Title :
Sea state influence on L-band emissivity in various fetch conditions
Author :
Dinnat, E. ; Etcheto, J. ; Boutin, J. ; Caudal, G. ; Weill, A. ; Camps, A. ; Miller, J. ; Contardo, S.
Author_Institution :
LODYC, Univ. Pierre et Marie Curie, Paris, France
Abstract :
Two campaigns were conducted in October and November 2001 with the support of ESA to check the validity of existing emissivity models in L-band and to assess the accuracy which can be expected for sea surface salinity retrieved from the Soil Moisture and Ocean Salinity (SMOS) satellite measurements. Taking into account the influence of the various fetch conditions encountered during these campaigns, we study the influence of the sea state on emissivity. We use sea state measurements to estimate the wave age. Then we use a sea wave spectrum, which is wave age dependent, to compute brightness temperatures (Tb) with a two-scale emissivity model. We compare the simulated Tb with measurements and determine the validity of the sea state parameterization.
Keywords :
ocean waves; radiometry; remote sensing; AD 2001 10; AD 2001 11; Atlantic Ocean; EuroSTARRS campaign; Golf de Gascogne; L-band emissivity; Mediterranean Sea; SMOS satellite measurements; Soil Moisture and Ocean Salinity; WISE 2001 campaign; brightness temperatures; emissivity models; fetch conditions; sea state measurements; sea surface salinity retrieved; sea wave spectrum; wave age; Brightness temperature; Computational modeling; L-band; Moisture measurement; SMOS mission; Satellites; Sea measurements; Sea surface salinity; Soil measurements; State estimation;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International
Print_ISBN :
0-7803-7536-X
DOI :
10.1109/IGARSS.2002.1027273
