ESA Permafrost Climate Change Initiative (Permafrost_cci): Permafrost extent for the Northern Hemisphere, v3.0
type: Dataset
modified: 1997-01-01T00:00:00Z
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keyword: Permafrost
keyword: CCI
keyword: Permafrost Extent
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language: EN
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  label: Under the following licence https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_permafrost_terms_and_conditions.pdf, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
access URL: http://data.ceda.ac.uk/neodc/esacci/permafrost/data/permafrost_extent/L4/area4/pp/v03.0
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description: This dataset contains permafrost extent data produced as part of the European Space Agency's (ESA) Climate Change Initiative (CCI) Permafrost project. It forms part of the second version of their Climate Research Data Package (CRDP v2). It is derived from a thermal model driven and constrained by satellite data. Grid products of CDRP v2 are released in annual files, covering the start to the end of the Julian year. This corresponds to average annual ground temperatures (at 2 m depth) which forms the basis for the retrieval of yearly fraction of permafrost-underlain and permafrost-free area within a pixel. A classification according to the IPA (International Permafrost Association) zonation delivers the well-known permafrost zones, distinguishing isolated (0-10%) sporadic (10-50%), discontinuous (50-90%) and continuous permafrost (90-100%).Case A: This covers the Northern Hemisphere (north of 30Â°) for the period 2003-2019 based on MODIS Land Surface temperature merged with downscaled ERA5 reanalysis near-surface air temperature data. Case B: This covers the Northern Hemisphere (north of 30Â°) for the period 1997-2002 based on downscaled ERA5 reanalysis near-surface air temperature data which are bias-corrected with the Case A product for the overlap period 2003-2019 using a pixel-specific statistics for each day of the year.
temporal: PeriodOfTime
  start date: 1997-01-01T00:00:00Z
  end date: 2019-12-31T23:59:59Z

MODIS
type: Entity
type: Concept
in scheme: https://earth.esa.int/concepts/concept_scheme/instruments

AQUA
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MERIS
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Envisat
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AVHRR-3
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NOAA-15
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NOAA-16
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NOAA-17
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TERRA
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PROBA-V
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CatalogRecord
modified: 2026-07-31T00:58:37Z
conforms to: https://joinup.ec.europa.eu/release/geodcat-ap/20

https://fedeo.ceos.org/collections/6e2091cb0c8b4106921b63cd5357c97c
type: CatalogRecord
conforms to: ISO19139-2

CEDA Data Catalogue Page
type: Document
description: Detail and access information for the resource

ESA CCI Permafrost project website
type: Document
description: No further details.

Technical documentation for the Permafrost CCI project
type: Document
description: No further details.

Product User Guide
type: Document
description: No further details.

EARTH SCIENCE>BIOSPHERE>VEGETATION
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

EARTH SCIENCE>AGRICULTURE>SOILS>PERMAFROST
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in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

Aqua
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ENVISAT
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NOAA-15
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NOAA-16
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NOAA-17
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ASAR
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AVHRR-3
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MERIS
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MODIS
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ASAR
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