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ESA Permafrost Climate Change Initiative (Permafrost_cci): Permafrost Active Layer Thickness for the Northern Hemisphere, v1.0

Update Frequency: Not Planned
Status: Superseded
Online Status: ONLINE
Publication State: Citable
Publication Date: 2019-12-06
DOI Publication Date: 2019-12-19
Download Stats: last 12 months
Dataset Size: 15 Files | 4GB

This dataset has been superseded. See Latest Version here

This dataset contains permafrost active layer thickness data produced as part of the European Space Agency's (ESA) Climate Change Initiative (CCI) Permafrost project. It forms part of the beta version of their Climate Research Data Package (CRDP v0). It is derived from a thermal model driven and constrained by satellite data. Grid products of CDRP v0 are released in annual files, covering the start to the end of the Julian year. The maximum depth of seasonal thaw is provided, which corresponds to the active layer thickness. It covers the Northern Hemisphere (north of 30°) for the period 2003-2017.

Citable as:  Obu, J.; Westermann, S.; Barboux, C.; Bartsch, A.; Delaloye, R.; Grosse, G.; Heim, B.; Hugelius, G.; Irrgang, A.; Kääb, A.M.; Kroisleitner, C.; Matthes, H.; Nitze, I.; Pellet, C.; Seifert, F.M.; Strozzi, T.; Wegmüller, U.; Wieczorek, M.; Wiesmann, A. (2019): ESA Permafrost Climate Change Initiative (Permafrost_cci): Permafrost Active Layer Thickness for the Northern Hemisphere, v1.0. Centre for Environmental Data Analysis, 19 December 2019. doi:10.5285/1ee56c42cf6c4ef698693e00a63795f4.
Abbreviation: Not defined
Keywords: Permafrost, CCI, Active layer thickness


Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data have been produced by the ESA CCI Permafrost project as part of ESA's Climate Change Initiative programme

Data Quality:
Data are as provided by the CCI Permafrost project. For further quality information see the permafrost CCI website and linked documentation.
File Format:

Process overview

This dataset was generated by the computation detailed below.

Computation of Permafrost datsets by the ESA Permafrost CCI


The Permafrost CCI project is establishing Earth Observation (EO) based products for the permafrost Essential Climate Variable (ECV) spanning the last two decades. Since ground temperature and thaw depth cannot be directly observed from space-borne sensors, a variety of satellite and reanalysis data are combined in a ground thermal model. The algorithm uses remotely sensed data sets of Land Surface Temperature (MODIS LST/ ESA LST CCI) and landcover (ESA LandcoverCCI) to drive the transient permafrost model CryoGrid 2, which yields thaw depth and ground temperature at various depths, while ground temperature forms the basis for permafrost fraction.

Input Description


Output Description


Software Reference


  • var_id: ALT
  • units: metres*100
  • var_id: polar_stereographic
  • units: m
  • var_id: x
  • standard_name: projection_x_coordinate
  • long_name: x coordinate of projection
  • names: projection_x_coordinate, x coordinate of projection
  • units: m
  • var_id: y
  • standard_name: projection_y_coordinate
  • long_name: y coordinate of projection
  • names: projection_y_coordinate, y coordinate of projection

Co-ordinate Variables