NSIDC-0009 Nimbus-5 ESMR Polar Gridded Sea Ice Concentrations C. Parkinson, J. Comiso, H. J. Zwally Nimbus-5 ESMR Polar Gridded Sea Ice Concentrations 2004-01-01 Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/nsidc-0009.html 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 Investigator Josephino 'Joey' C. Comiso josefino.c.comiso@nasa.gov 1 301 614-5708

Laboratory for Hydrospheric Processes

Cryospheric Sciences Branch

NASA/Goddard Space Flight Center

Code 614

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

Laboratory for Hydrospheric Processes

NASA/Goddard Space Flight Center

Code 971

Greenbelt MD 20771 USA Investigator Claire L. Parkinson clairep@neptune.gsfc.nasa.gov 1 301 614-5715 1 301 614-5644

Laboratory for Hydrospheric Processes

NASA/Goddard Space Flight Center

Code 971

Greenbelt MD 20771 EARTH SCIENCE Cryosphere Sea Ice Sea Ice Concentration EARTH SCIENCE Cryosphere Sea Ice Sea Ice Concentration EARTH SCIENCE Oceans Sea Ice Sea Ice Concentration EARTH SCIENCE Oceans Sea Ice Sea Ice Concentration Biota Antarctic Arctic DAAC EOSDIS Ice Concentration NSIDC DAAC Passive Microwave Remote Sensing Sea Ice Sea Ice Concentration ESMR Electronic Scanning Microwave Radiometer RADIOMETERS NIMBUS-5 1972-12-12 1976-12-31 complete -90 -39.23 -180 180 30.98 90 -180 180 CONTINENT ANTARCTICA GEOGRAPHIC REGION ARCTIC GEOGRAPHIC REGION POLAR 25 km 25 km EOSDIS Earth Observing System Data Information System ESIP Earth Science Information Partners Program English NSIDC 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 107 KB HDF FTP 138 KB HDF Comiso, J. C., and H. J. Zwally. 1980. Corrections for Anomalous Time Dependent Shifts in Brightness Temperature from Nimbus-5 ESMR. NASA TM-82055. Greenbelt, MD. Parkinson, C., J. Comiso, H. J. Zwally, D. Cavalieri, P. Gloersen, and W. Campbell. 1987. Arctic Sea Ice, 1973-1976: Satellite Passive-Microwave Observations. NASA SP-489. Parkinson, C., J. Comiso, and H. J. Zwally. 1987. Satellite-Derived Ice Data Sets No. 2: Arctic Monthly Average Microwave Brightness Temperatures and Sea Ice Concentrations, 1973-1976. NASA Technical Memorandum 87825. Pearson, F. 1990. Map Projections: Theory and Applications. CRC Press. Boca Raton, Florida. 372 pages. Snyder, J. P. 1987. Map Projections - A Working Manual. U.S. Geological Survey Professional Paper 1395. U.S. Government Printing Office. Washington, D.C. 383 pages. Snyder, J. P. 1982. Map Projections Used by the U.S. Geological Survey. U.S. Geological Survey Bulletin 1532. Wilheit, T. 1972. The Electrically Scanning Microwave Radiometer (ESMR) Experiment. Nimbus-5 User's Guide. NASA/Goddard Space Flight Center. p. 59-105. Zwally, H. J., J. Comiso, C. Parkinson, W. Campbell, F. Carsey, and P. Gloersen. 1983. Antarctic Sea Ice, 1973-1976: Satellite Passive-Microwave Observations. NASA SP-459. Zwally, H. J., J. Comiso, and C. Parkinson. 1981. Satellite-Derived Ice Data Sets No. 1: Antarctic Monthly Average Microwave Brightness Temperatures and Sea Ice Concentrations 1973-1976. NASA Technical Memorandum 83812.

Daily and monthly averaged sea ice concentrations from the Nimbus-5 Electrically Scanning Microwave Radiometer (ESMR) are available for the Arctic and Antarctic from 12 December 1972 through 31 December 1976 at 25 km gridded resolution. Raw data were reprocessed to include ocean masks that reduce weather effects and coastal contamination, and to include a 15 percent ice threshold. Reprocessed data are in Hierarchical Data Format (HDF) and are available via FTP.

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