Title :
Sea surface brightness temperature at L-band: impact of surface currents
Author :
Camps, A. ; Vall-llossera, M. ; Miranda, J. ; Font, J.
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. Politecnica de Catalunya, Barcelona
Abstract :
Drastically different sea states result for a growing, decaying, or a fully-developed sea due to the presence of a wind field. In addition, the sea state is altered by the superposition of oceanic currents on the wave field created by the wind. This study presents a numerical analysis of the change in the sea surface brightness temperature at L-band computed using the SSA model and a modified Kitaigorodskii-Pierson-Moskowitz sea surface spectrum to account for the presence of surface water currents. Their impact on the brightness temperature variations is evaluated and compared to the brightness temperature fluctuations observed from a tower-based field experiment. The consequences for salinity retrievals from space using L-band radiometry are discussed
Keywords :
microwave measurement; ocean temperature; ocean waves; oceanographic techniques; radiometry; remote sensing by radar; wind; Kitaigorodskii-Pierson-Moskowitz sea surface spectrum; L-band radiometry; SSA model; numerical analysis; oceanic current superposition; salinity retrieval; sea state; sea surface brightness temperature; surface currents; surface water current; tower-based field experiment; wave field; wind field; Brightness temperature; L-band; Ocean temperature; Radiometry; Rough surfaces; Sea measurements; Sea surface; Sea surface salinity; Surface roughness; Wind speed;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-8742-2
DOI :
10.1109/IGARSS.2004.1370457
