Permafrost

Continous, Discontinous and Sporadic permafrost and July 10 C Isotherm with Sea Ice Extent.
Continous, Discontinous and Sporadic permafrost and July 10 C Isotherm with Sea Ice Extent.
  • Map: Arto Vitikka, Arctic Centre, University of Lapland.
  • Sources for permafrost and sea ice data: National Snow and Ice Data Center.
  • July 10 C isotherm from USGS (2023).
  • You may use the map freely provided that the sources and credits are mentioned.
  • Map is done with QGIS software.
Last updated: 16.10.2025