Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 18, issue 4
Articles | Volume 18, issue 4
https://doi.org/10.5194/essd-18-2891-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-2891-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 4
Data description article
 | 
27 Apr 2026
Data description article |  | 27 Apr 2026

Mapping sea ice concentration using Nimbus-5 ESMR and local dynamical tie points

Emil Haaber Tellefsen, Rasmus Tage Tonboe, and Wiebke Margitta Kolbe

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Short summary
The Electrically Scanning Microwave Radiometer, the first spaceborne microwave instrument to map global sea ice, was launched aboard the NIMBUS 5 satellite in December 1972 and remained operational until May 1977. As part of the European Space Agency's Climate Change Initiative, this dataset has been reprocessed and validated to provide a nearly complete global record of sea ice concentration, with only a few data gaps in 1973 and 1975.
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