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Data Set ID:

Timing and Statistics of Autumn and Spring Annual Snow Cover for the Northern Hemisphere, 1972 to 2000, Version 1

The National Snow and Ice Data Center hosts a time-series data set comprising annual snow cover data
for the Northern Hemisphere (covering land primarily over 45 degrees North) from 1972 to 2000.
Data are presented for land areas that exhibited snow cover in each of the 29 years. Variables are the
week of snow disappearance, the week of snow cover onset, and the duration of the snow-free period.
These variables were derived from operational NOAA weekly snow cover charts that have been quality
controlled by the Rutgers University Global Snow Lab. For each year of the 29-year period, there are
three binary files with data in an 89 x 89 cell grid. The week of the first detected snow cover in the fall
is included in the WFS file, the week of the last observed snow cover in the spring is given in the WLS
file, and the duration of snow-free period in weeks is given in the DSF file. Data are also provided in ASCII format summary files. In addition, summary statistics for each parameter are provided. These are
grids of the mean and the standard deviation for the three parameters. Gridded latitude and longitude
files are also included with this data set.

Geographic Coverage

  • Snow/Ice > Snow Cover > Duration
  • Timing
Spatial Coverage:
  • N: 90, S: 0, E: 180, W: -180

Spatial Resolution: Not Specified
Temporal Coverage:
  • 1 January 1972 to 31 December 2000
Temporal Resolution: Not specified
Data Format(s):
  • Binary
  • ASCII Text
Platform(s) DMSP
Sensor(s): SSM/I
Version: V1
Data Contributor(s): Dennis Dye
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.

Dye, D. 2005. Timing and Statistics of Autumn and Spring Annual Snow Cover for the Northern Hemisphere, 1972 to 2000, Version 1. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: [Date Accessed].
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