Data

Permafrost Climate Research Data Package on Ceda Archive and on the Climate Data Dashboard.

Permafrost version 4 dataset includes:

• Mean Annual Ground Temperature in permafrost areas for the Northern Hemisphere, v4.0, 1997-2021, 1km; 0m, 1m, 2m, 5m and 10 m depth (University Oslo); https://catalogue.ceda.ac.uk/uuid/20ec12f5d1f94e99aff2ed796264ee65;
  
• Permafrost extent for the Northern Hemisphere, v4.0, 1997-2021, 1km, fraction, annual (University Oslo);https://catalogue.ceda.ac.uk/uuid/93444bc1c4364a59869e004bf9bfd94a;
  
• Permafrost active layer thickness for the Northern Hemisphere, v4.0, 1997-2021 1 km, annual maximum thaw depth (University Oslo).https://catalogue.ceda.ac.uk/uuid/d34330ce3f604e368c06d76de1987ce5.

Citation of complete dataset:

Westermann, S.; Barboux, C.; Bartsch, A.; Delaloye, R.; Grosse, G.; Heim, B.; Hugelius, G.; Irrgang, A.; Kääb, A.M.; Matthes, H.; Nitze, I.; Pellet, C.; Seifert, F.M.; Strozzi, T.; Wegmüller, U.; Wieczorek, M.; Wiesmann, A. (2024): ESA Permafrost Climate Change Initiative (Permafrost_cci): Permafrost version 4 data products. NERC EDS Centre for Environmental Data Analysis, date of citation. http://catalogue.ceda.ac.uk/uuid/7479606004d9465bad949671501e5f21.

Alternative access via WebGIS visualization at https://maps.awi.de.

Additional Permafrost_cci records:

• Rock glacier inventories at WebMAPS (University Fribourg).
  
• Circumpolar landcover units v1.1, north of treeline, Sentinel-1 and Sentinel-2 at https://zenodo.org/records/11486149 (b.geos, SU and AWI).
  
• Days with potential alteration of ground temperature through rain on snow: mid-winter (Nov-Feb) snow thaw and refreeze, north of 65°N, MetopASCAT + SMOS at https://zenodo.org/record/7575927 (b.geos and FMI).

Heritage:

• Global permafrost properties (probability and mean annual ground temperature) based on equilibrium modelling (TTOP, 2000-2016) from GlobPermafrost (https://globpermafrost.info/products-and-data-access).