Reconstructed North American Snow Extent, 1900-1993

Data Contributors FREI, ALLAN ROBINSON, DAVID Parameters SNOW/ICE > SNOW COVER > SNOW EXTENT Instruments AVHRR : ADVANCED VERY HIGH RESOLUTION RADIOMETER VHRR : VERY HIGH RESOLUTION RADIOMETER

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This data set contains reconstructed monthly North American snow extent values for November through March, 1900-1993. Investigators used a combination of satellite and station observations and based the reconstruction on linear regressions between the two types of observations. The data also includes standard errors of estimates as well as the observed values upon which the regressions were based.

Station-based snow observations are available for dates since the early twentieth century but lack comprehensive spatial coverage. A remotely sensed product based on visible-band imagery provides more complete spatial coverage but has only been available since the early 1970s. Since the reconstructed values are based on regression, variability is underestimated and therefore the magnitude of some extreme values is underestimated.

Data 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.

Frei, A. and D. Robinson. 2002. Reconstructed North American Snow Extent, 1900-1993. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N5000014.

See Also

• This site provides access to data and documentation.
• Reconstructed North American, Eurasian, and Northern Hemisphere Snow Cover Extent, 1900-1997
• Contact User Services