Title :
Variations of sea ice extent in the Caspian and Aral seas derived from combination of active and passive satellite microwave data
Author :
Kouraev, Alexei V. ; Papa, Fabrice ; Mognard, Nelly M. ; Buharizin, Petr I. ; Cazenave, Anny ; Cretaux, Jean-Francois ; Dozortseva, Julia ; Remy, Frederique
Author_Institution :
Centre d´´Etudes Spatiales de la Biosphere, Toulouse, France
Abstract :
The paper discusses time and space variations of ice cover in the Caspian and Aral seas. We use the synergy of data from active (radar altimeter) and passive (radiometer) microwave instruments onboard the TOPEX/Poseidon satellite, as well as passive microwave data from SSMR and SSM/I sensors. The results indicate significant spatial and temporal variability of ice conditions, with a marked decrease of both duration of ice season and ice extent during winters 1998/99-2001/02. The satellite-derived time series of sea ice parameters are very valuable in view of the heterogeneous and mostly unpublished data on ice conditions over the Caspian and Aral seas since the mid-1980s.
Keywords :
oceanographic techniques; radar altimetry; radiometry; remote sensing by radar; sea ice; AD 1980; AD 1998 to 1999; AD 2001 to 2002; Aral Sea; Caspian Sea; Poseidon satellite; SSM/I sensors; SSMR; TOPEX satellite; active satellite microwave data; passive satellite microwave data; radar altimeter; radiometer; sea ice variations; space variations; spatial variability; temporal variability; time variations; Atmospheric measurements; Instruments; Microwave measurements; Microwave radiometry; Microwave theory and techniques; Passive radar; Satellite broadcasting; Sea ice; Sea measurements; Spaceborne radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1294593
