NDLI: Time evolution of the microwave signatures of a drifting Arctic ice feature in 1996-1997

Content Provider	IEEE Xplore Digital Library
Author	Gohin, F. Ezraty, R.
Copyright Year	1998
Description	Author affiliation: Dept. d'Oceanogr. Spatiale IFREMER, Centre de Brest, Plouzane, France (Gohin, F.)
Abstract	A large second-year ice feature, observed in autumn 1996, has been tracked during its drift, from October to the end of May. Its active microwave characteristics, obtained from scatterometers in C- and Ku-band, have been compared to the brightness temperatures, the gradient ratio and the multiyear ice concentration derived from the SSM/I data. Ice, highly reflective at C-band, located in the center of the feature, appears as a cluster on the scatter plot in (19, 37-vertical polarization) brightness temperature space. Situated under the main line characterizing consolidated ice on the feature, these points are associated to a relatively high gradient ratio. The NASA team algorithm interprets these observations as low multiyear ice concentrations. Despite their inability to give a direct estimation of the multiyear ice concentration, scatterometers present, through the cold season, coherent sets of data which can help to identify areas of homogeneous type within old ice. For this purpose, scatterometers in C-band (5.3 GHz) provide observations which complete those of the SSM/I while data in Ku-band (14.5 GHz) appear to be close to the 19 GHz brightness temperatures.
Starting Page	1985
Ending Page	1987
File Size	429008
Page Count	3
File Format	PDF
ISBN	0780344030
DOI	10.1109/IGARSS.1998.703716
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-07-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Arctic Brightness temperature Radar measurements Spaceborne radar Polarization Scattering Backscatter Sea ice NASA Clustering algorithms
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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