Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent, Version 4

Data Contributors ARMSTRONG, RICHARD BRODZIK, MARY J. Parameters SEA ICE > ICE EXTENT SNOW/ICE > SNOW COVER Instruments AVHRR : ADVANCED VERY HIGH RESOLUTION RADIOMETER SMMR : SCANNING MULTICHANNEL MICROWAVE RADIOMETER SSM/I : SPECIAL SENSOR MICROWAVE/IMAGER SSMIS : SPECIAL SENSOR MICROWAVE IMAGER/SOUNDER VAS : VISSR ATMOSPHERIC SOUNDER

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The Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent Version 4 product combine snow cover and sea ice extent at weekly intervals from 23 October 1978 through 31 December 2010, and snow cover alone from 03 October 1966 through 31 December 2010. Snow cover extent for this data set is based on the NOAA/NCDC Climate Data Record (CDR) of Northern Hemisphere (NH) Snow Cover Extent (SCE) by D. Robinson (2012) and regridded to the EASE-Grid. The NOAA/NCDC CDR of Northern Hemisphere Snow Cover Extent data were derived from the manual interpretation of AVHRR, GOES, and other visible-band satellite data (Helfrich et al. 2007). Sea ice extent is regridded to EASE-Grid from Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data. Designed to facilitate study of Northern Hemisphere seasonal fluctuations of snow cover and sea ice extent, the data set also includes monthly climatologies describing average extent, probability of occurrence, and variance. Data are provided in flat, unsigned binary files and are available via FTP.

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Data Citation

The following example shows how to cite the use of this data set in a publication. For more information, see our Use and Copyright Web page.

Brodzik, M. and R. Armstrong. 2013. Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent. Version 4. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center.

See Also

• EASE-Grid Data
• Sea Ice Data at NSIDC
• Atlas of the Cryosphere
• Contact User Services