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Data Set ID:
G02131

Reconstructed North American, Eurasian, and Northern Hemisphere Snow Cover Extent, 1915-1997, Version 1

This data set contains time series of monthly snow cover extent (SCE) for North America, Eurasia, and the Northern Hemisphere from 1915 to 1997, based on snow cover reconstruction and NOAA satellite data. The reconstruction method used in situ snow depth and daily climate data from the U.S.A., Canada, China, and the former Soviet Union to generate a monthly snow cover index, which was found to be closely related to satellite-derived estimates of SCE in certain months. Brown (2000) describes the method, which is considered to be more robust than SCE reconstruction based on statistical methods (see Brown, 1997; Frei et al., 1999).

In addition, the data set contains time series of annual variation in areally-averaged monthly snow depth and (SWE) for the North American grid domain used to derive the snow cover index. These provide additional insights into secular changes in snow cover over North America since SCE and depth variations are not always positively correlated.

Data are available via FTP.

Geographic Coverage

Data Set Tabs

Spatial Coverage:
  • N: 90, S: 0, E: 180, W: -180

Spatial Resolution: Not Specified
Temporal Coverage:
  • 1 January 1915 to 31 December 1997
Temporal Resolution: Not specified
Parameter(s):
  • Snow/Ice > Snow Cover > Snow Extent
Platform(s) GROUND STATIONS, NOAA POES, NOAA-4, SATELLITES
Sensor(s): AVHRR, VHRR
Data Format(s):
  • ASCII Text (.txt)
Version: V1
Data Contributor(s): Ross Brown

Data Citation

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

Brown, R. D. 2002. Reconstructed North American, Eurasian, and Northern Hemisphere Snow Cover Extent, 1915-1997, Version 1. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: http://dx.doi.org/10.7265/N5V985Z6. [Date Accessed].

Questions? Please contact:

NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA