NSIDC-0393 Arctic Sea Ice Freeboard and Thickness Yi, Donghui, Jay Zwally Arctic Sea Ice Freeboard and Thickness 2009-04-30 Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/nsidc-0393.html Investigator Donghui Yi

NASA Goddard Space Flight Center

Cryospheric Sciences Branch

Greenbelt MD 20771 USA Investigator H. Jay Zwally Jay.Zwally@nasa.gov 1 301 614-5643 1 301 614-5644

NASA/Goddard Space Flight Center

Laboratory for Hydrospheric Processes

NASA/Goddard Space Flight Center

Code 971

Greenbelt MD 20771 USA Technical Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 x 1 303 492-2468 x

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA EARTH SCIENCE Cryosphere Sea Ice EARTH SCIENCE Cryosphere Sea Ice Ice Depth/Thickness EARTH SCIENCE Oceans Sea Ice EARTH SCIENCE Oceans Sea Ice Ice Depth/Thickness Climatology/Meteorology/Atmosphere Arctic Sea Ice GLAS ICESat Ice Thickness Sea Ice Special Sensor Microwave/Imager SSM/I GLAS Geoscience Laser Altimeter System SSM/I Special Sensor Microwave/Imager DMSP Defense Meteorological Satellite Program ICESAT Ice, Cloud and Land Elevation Satellite SATELLITES 2005-10-21 2005-11-24 2006-02-22 2006-03-27 2006-05-24 2006-06-26 2006-10-25 2006-11-27 2007-03-12 2007-04-14 2007-10-02 2007-11-05 complete 65 86 -180 180 GEOGRAPHIC REGION ARCTIC 70 m 70 m 1 day ICESAT Ice, Cloud and Land Elevation Satellite English NSIDC_DAAC NSIDC_DAAC NASA DAAC at the National Snow and Ice Data Center http://nsidc.org/daac/index.html Data Center Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA NSIDC National Snow and Ice Data Center http://nsidc.org Data Center Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA FTP 8 MB Binary FTP 932 MB ASCII Text Zwally, H. J., D. Yi, R. Kwok, and Y. Zhao. 2008. ICESat Measurements of Sea Ice Freeboard and Estimates of Sea Ice Thickness in the Weddell Sea. Journal of Geophysical Research 113(C02S15), doi: 10.1029/2007JC004284. Warren, S. G., I. G. Rigor, N. Untersteiner, V. F. Radionov, N. N. Bryazgin, Y. I. Aleksandrov, and R. Colony. 1999. Snow Depth on Arctic Sea Ice. Journal of Climate 12: 1814 - 1829. Gloersen, P., W. J. Campbell, D. J. Cavalieri, J. C. Comiso, C. L. Parkinson, and H. J. Zwally. 1992. Arctic and Antarctic Sea Ice, 1978-1987: Satellite Passive-Microwave Observations and Analysis. NASA SP-511, 290 pp. Picot, N., K. Case, S. Desai, and P. Vincent. 2003. AVISO and PODAAC User Handbook, IGDR and GDR Jason Products. SMM-MU-M5-OP-13184-CN (AVISO), JPL D-21352 (PO.DAAC). Stackpole, J. D. 1994. The WTO Format for the Storage of Weather Product Information and the Exchange of Weather Product Message in Gridded Binary Form. NOAA Office Note 388. Dorandeu, J. and P. Y. Le Traon. 1999. Effects of Global Mean Atmospheric Pressure Variations on Mean Sea Level Changes from TOPEX/POSEIDON. Journal of Atmospheric and Oceanic Technology, 16(9), 1279-1283. Kwok, R., and G. F. Cunningham. 2008. ICESat Over Arctic Sea Ice: Estimation of Snow Depth and Ice Thickness. Journal of Geophysical Research 113(C08010), doi: 10.1029/2008JC004753.

This data set provides measurements of sea ice freeboard and sea ice thickness for the Arctic region. The data were acquired from the Ice, Cloud, and land Elevation Satellite (ICESat) Geoscience Laser Altimeter System (GLAS) instrument, the Special Sensor Microwave/Imager (SSM/I), and climatologies of snow and drift of ice. The data span six GLAS Release-28 campaigns, laser 3D through 3I, from 21 October 2005 to 05 November 2007. Data parameters include sea ice freeboard and thickness measured in meters. The data are provided in three formats: ASCII track data derived from binary track data, binary gridded polar stereographic data derived from ASCII gridded Polar Stereo files, and Portable Network Graphic (PNG) image files. Also included are mask files used in preparation of the image files, a Mapx grid definition file, and grid cell center latitude and longitude files. The ASCII track data vectors of position and ice thickness have a resolution of about 170 meters in the along-track direction. The binary gridded polar stereographic data have a resolution of 25 km. The data set is approximately 940 megabytes. The data are available via FTP.

VIEW PROJECT HOME PAGE http://nsidc.org/data/icesat/index.html ICESat/GLAS Data at NSIDC VIEW PROJECT HOME PAGE http://icesat.gsfc.nasa.gov/ ICESat/GLAS Web site at NASA Goddard Space Flight Center VIEW PROJECT HOME PAGE http://icesat.gsfc.nasa.gov/icesat/ ICESat/GLAS Web site at NASA Goddard Space Flight Center VIEW PROJECT HOME PAGE http://glas.wff.nasa.gov/ ICESat/GLAS Web site at NASA Wallops Flight Facility CEOS IDN DIF 9.7 2009-04-30 2012-02-13 Fixed temporal resolution for EDB.