Data Set ID:

Global Monthly EASE-Grid Snow Water Equivalent Climatology, Version 1

This data set comprises global, monthly satellite-derived Snow Water Equivalent (SWE) climatologies from November 1978 through May 2007, with periodic updates released as resources permit. Global data are gridded to the Northern and Southern 25 km Equal-Area Scalable Earth Grids (EASE-Grids). Global snow water equivalent is derived from Scanning Multichannel Microwave Radiometer (SMMR) and selected Special Sensor Microwave/Imagers (SSM/I). Northern Hemisphere data are enhanced with snow cover frequencies derived from the Northern Hemisphere EASE-Grid Weekly Snow Cover and Sea Ice Extent Version 2 data (these data were not produced for the Southern Hemisphere). These data are suitable for continental-scale time-series studies of snow cover and water equivalent. The data are binary data files and PNG images, and are available via FTP.

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Geographic Coverage

Data Set Tabs

Spatial Coverage:
  • N: 90, S: -90, E: 180, W: -180

Spatial Resolution:
Not Specified
Temporal Coverage
  • 1978-01-01 to 2007-12-31
Temporal Resolution:
1 month
  • Snow/Ice > Snow Cover
  • Snow/Ice > Snow Water Equivalent
Sensor(s): AVHRR, SMMR, SSM/I
Data Format(s):
  • Binary
Data Contributor(s): Richard Armstrong, Mary J. Brodzik, Kenneth Knowles, Matthew Savoie

Data Citation

As a condition of using this data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Armstrong, R., M. Brodzik, K. Knowles, and M. Savoie. 2005. Global Monthly EASE-Grid Snow Water Equivalent Climatology, Version 1. [indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. [Date Accessed].

Questions? Please contact:

NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA