On the secular trends in sea ice extent over the antarctic region based on OCEANSAT-1 MSMR observations

Autor:	N. K. Vyas, Mihir K. Dash, S. M. Bhandari, Amitabh Mitra, N. Khare, Prem Chand Pandey
Rok vydání:	2003
Předmět:	Drift ice Arctic sea ice decline geography geography.geographical_feature_category Antarctic sea ice Arctic ice pack Oceanography Climatology Sea ice thickness Sea ice General Earth and Planetary Sciences Cryosphere Environmental science Sea ice concentration
Zdroj:	International Journal of Remote Sensing. 24:2277-2287
ISSN:	1366-5901 0143-1161
DOI:	10.1080/01431160210154975
Popis:	Space-based passive microwave radiometers have been used to monitor southern ocean sea ice characteristics over the Antarctic region for the last 25 years. Decade-long observations from SMMR onboard Nimbus-7 during 1978-1987 indicated significant long-term trends in sea ice cover over different regions of the southern polar ocean, in addition to the strong seasonal and inter-annual variability in various sea ice characteristics. In the post-SMMR era, passive microwave monitoring of the polar region has continued with the availability of SSM/I onboard DMSP series of satellites. With the launch of MSMR onboard India's OCEANSAT-1 in May 1999, an independent set of multi channel passive microwave observations of the Antarctic and Arctic sea ice have become available. In this paper, we present the analysis of the first two years of MSMR observed brightness temperatures to infer sea ice extent over the Antarctic region. The analysis brings out the characteristic seasonal variability of sea ice extents over diff...
Databáze:	OpenAIRE
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