Ice cover variability in the Caspian and Aral seas from active and passive microwave satellite data

The paper discusses time and space variations of ice extent in the Caspian and Aral seas during the last decade (1992–2002). It uses synergy of data from active (radar altimeter) and passive (radiometer) microwave nadirlooking instruments onboard the TOPEX/Poseidon satellite. The proposed approach i...

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Bibliographic Details
Published in:Polar Research
Main Authors: Kouraev, Alexei V., Papa, Fabrice, Buharizin, Petr I., Cazenave, Anny, Cretaux, Jean-Francois, Dozortseva, Julia, Remy, Frederique
Format: Article in Journal/Newspaper
Language:English
Published: Norwegian Polar Institute 2003
Subjects:
Polar Research
Sea ice
Online Access:https://polarresearch.net/index.php/polar/article/view/2095
https://doi.org/10.3402/polar.v22i1.6442
Description
Summary:The paper discusses time and space variations of ice extent in the Caspian and Aral seas during the last decade (1992–2002). It uses synergy of data from active (radar altimeter) and passive (radiometer) microwave nadirlooking instruments onboard the TOPEX/Poseidon satellite. The proposed approach is substantiated and validated using both in situ and satellite imagery data for the Caspian Sea. The results indicate significant spatial and temporal variability of ice conditions, with a significant decrease of both the duration of ice season and ice extent during the last four winters (1998–2002). The TOPEX/Poseidon-derived time series of sea ice extent are very valuable in view of the fragmentary and mostly unpublished data on ice conditions on the Caspian and Aral seas since the mid-1980s.

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