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ISLSCP II Northern Hemisphere Monthly Snow Cover Extent


DatasetISLSCP II Northern Hemisphere Monthly Snow Cover Extent
Release date2010-07-26
Time period1986-01-01 to 1995-12-31

Usage Metrics

CountEarliest DateLatest DateData Usage
Citations120152015Publications citing this dataset
Downloads9622012-01-242017-12-168352 total files downloaded


This ISLSCP data set is derived from the National Snow and Ice Data Center (NSIDC) Northern Hemisphere EASE-Grid Weekly Snow Cover and Sea Ice Extent product which combines snow cover and sea ice extent at weekly intervals for October 1978 through June 2001, and snow cover alone from 1966 through June 2001. The original data set was the first representation of combined snow and sea ice measurements derived from satellite observations for the period of record. Designed to facilitate study of Northern Hemisphere seasonal fluctuations of snow cover and sea ice extent, the original NSIDC data set also includes monthly climatologies describing average extent, probability of occurrence, and variance. This data set shows the extent of snow on the land at a variety of scales (1.0 degree, 0.5 degree, 0.25 degree). The values represent the percentage of days in each month where snow was present -- 100 means 100% of the month, 80 means 80% of the month, etc. There are 4 .zip files provided. Missing data is represented by -99 for water and -88 for land. The data were originally in a yearly tabular format. The file was converted to multi-scale maps by plotting each point in the tabular data onto a map of -99 (water) and -88 (land) created from the standard ISLSCP II Land/Sea Mask.

Dataset documentation


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Crosscite Citation Formatter
Armstrong, R.L., M.J. Brodzik, F.G. Hall, G.J. Collatz, B.W. Meeson, S.O. Los, E.Brown De Colstoun, and D.R. Landis. 2010. ISLSCP II Northern Hemisphere Monthly Snow Cover Extent. ORNL DAAC, Oak Ridge, Tennessee, USA.

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Data Files

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Data File (Granule)File SizeDatesLatitudeLongitude 663.6KB 1986-01-01 to 1995-12-31 90.00N to 90.00S180.00E to 180.00W 4.3MB 1986-01-01 to 1995-12-31 83.62N to 25.62N179.88E to 179.88W 296.0KB 1986-01-01 to 1995-12-31 83.50N to 25.50N179.50E to 179.50W 1.1MB 1986-01-01 to 1995-12-31 83.25N to 25.75N179.75E to 179.75W

Companion Files

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Dataset has 2 companion files.

  • 1_snow_cover_doc.pdf
  • 0_snow_cover_readme.txt

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