NDLI: Characteristics of CryoSat-2 signals over multi-year and seasonal sea ice

Content Provider	IEEE Xplore Digital Library
Author	Beckers, J. Casey, J.A. Hendricks, S. Ricker, R. Helm, V. Haas, C.
Copyright Year	2013
Description	Author affiliation: Dept. of Earth & Atmos. Sci., Univ. of Alberta, Edmonton, AB, Canada (Beckers, J.; Casey, J.A.; Haas, C.) \|\| Alfred Wegener Inst. for Polar & Marine Res., Bremerhaven, Germany (Hendricks, S.; Ricker, R.; Helm, V.)
Abstract	CryoSat-2 Level 1B and Level 2 data are compared with coincident airborne laser scanner and airborne electromagnetic induction surveys conducted in the Baltic Sea in March 2011 and in the Lincoln Sea in March and April 2012. Across-track snagging caused range retrieval errors in all examined tracks. The L2 surface height profiles are very noisy due to poor retracker performance. Cryosat-2 L2 data are produced by tracking the strongest return in the Level 1B waveforms, not the first return. When a strong reflector is present off-nadir, the retracker incorrectly selects this surface as the surface location of the nadir point. The surface height profile is smoothed by tracking the first return point instead of the peak power return. Ice thickness data produced by retracking the CryoSat-2 L1B data showed good correlation with airborne electromagnetic induction measurements. CryoSat-2 and NASA Operation Ice Bridge data exhibited similar latitudinal freeboard gradients. Accurate measurements of sea ice freeboard or thickness changes can be achieved using appropriate spatial and temporal averaging.
Sponsorship	IEEE Geosci. Remote Sens. Soc.
Starting Page	220
Ending Page	223
File Size	622918
Page Count	4
File Format	PDF
ISBN	9781479911141
ISSN	21536996
DOI	10.1109/IGARSS.2013.6721131
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-21
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sea ice Arctic Snow Sea measurements Sea surface Altimetry
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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