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Data Set ID:
G10007

Arctic Sea Ice Concentration and Extent from Danish Meteorological Institute Sea Ice Charts, 1901-1956, Version 1

This data set provides estimates of Arctic sea ice extent and concentration from 1901 to 1956 created from a collection of historic, hand-drawn sea ice charts from the Danish Meteorological Institute (DMI). These were used to create estimates for each summer month from 1901 to 1956 by manual, subjective interpretation of scanned versions of the charts. These estimates, shown in colored-coded fields, are available as image files in JPEG format and as GIS shapefiles.

Geographic Coverage

Spatial Coverage:
  • N: 90, S: 55, E: 180, W: -180

Spatial Resolution: Not Specified
Temporal Coverage:
  • 1 April 1901 to 31 August 1956
Temporal Resolution: Not specified
Parameter(s):
  • Sea Ice > Ice Extent
  • Sea Ice > Sea Ice Concentration
Platform(s) FIELD SURVEYS, GROUND-BASED OBSERVATIONS, SHIPS
Sensor(s): VISUAL OBSERVATIONS
Data Format(s):
  • ESRI Shapefile
  • JPEG
Version: V1
Data Contributor(s): Vivian Underhill, Florence Fetterer, Corey Petersen

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.

Underhill, V., F. Fetterer, and C. Petersen. 2014. Arctic Sea Ice Concentration and Extent from Danish Meteorological Institute Sea Ice Charts, 1901-1956, Version 1. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: http://dx.doi.org/10.7265/N5MP517M. [Date Accessed].
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