ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Greenland Surface Elevation Change grid from SARAL-AltiKa for 2013-2017, v0.1
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  label: Under the following licence https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_icesheets_greenland_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.
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keyword: CCI
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  start date: 2013-03-31T23:00:00Z
  end date: 2017-03-31T22:59:59Z
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description: This data set is part of the ESA Greenland Ice sheet CCI project. The data set provides surface elevation changes (SEC) for the Greenland Ice sheet derived from SARAL-AltiKa for 2013-2017. This new experimental product of surface elevation change is based on data from the AltiKa-instrument onboard the France (CNES)/Indian (ISRO) SARAL satellite. The AktiKa altimeter utilizes Ka-band radar signals, which have less penetration in the upper snow. However, the surface slope and roughness has an imprint in the derived signal and the new product is only available for the flatter central parts of the Greenland ice sheet.The corresponding SEC grid from Cryosat-2 is included for comparison. The algorithm used to devive the product is described in the paper âImplications of changing scattering properties on the Greenland ice sheet volume change from Cryosat-2 altimetryâ by S.B. Simonsen and L.S. SÃ¸rensen, Remote Sensing of the Environment, 190,pp.207-216, doi:10.1016/j.rse.2016.12.012. The approach used here corresponds to Least Squares Method (LSM) 5 described in the paper, in which the slope within each grid cell is accounted for by subtraction of the GIMP DEM; the data are corrected for both backscatter and leading edge width; and the LSM is solved at 1 km grid resolution (2 km search radius) and averaged in the post-processing to 5 km grid resolution and with a correlation length of 20 km.
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access URL: http://data.ceda.ac.uk/neodc/esacci/ice_sheets_greenland/data/greenland_surface_elevation_change/saral-altika/v0.1/
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keyword: Greenland Ice Sheet

CatalogRecord
modified: 2026-08-05T00:52:16Z
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https://fedeo.ceos.org/collections/series/items/0470e96f2d8245549ef2ba81842cdfd8
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SIRAL
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type: Concept

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

CryoSat-2
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in scheme: https://earth.esa.int/concepts/concept_scheme/platforms
type: Concept

ESA CCI Greenland Ice Sheet project website
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description: No further details.

CRYOSAT-2
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in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

ESA Climate Change Initiative website
type: Document
description: No further details.

SARAL
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in scheme: https://earth.esa.int/concepts/concept_scheme/platforms
type: Concept

Sample Image
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description: No further details.

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

EARTH SCIENCE>CRYOSPHERE>GLACIERS/ICE SHEETS>ICE SHEETS
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