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

Volume

4

fYear

2003

fDate

21-25 July 2003

Firstpage

2808

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 The satellite-derived time series of sea ice parameters are very valuable in view of the heterogeneous and mostly unpublished data on ice conditions over the Caspian and Aral seas since the mid-1980s.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;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International

Print_ISBN

0-7803-7929-2

Type

conf

DOI

10.1109/IGARSS.2003.1294593

Filename

1294593