ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Greenland Surface Elevation Change grid from SARAL-AltiKa for 2013-2017, v0.1

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 “Implications of changing scattering properties on the Greenland ice sheet volume change from Cryosat-2 altimetry” by S.B. Simonsen and L.S. Sørensen, 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.

Simple

Date (Publication)
2018-11-22T17:59:03
Date (Creation)
2018-11-22T17:59:03
Citation identifier
https://catalogue.ceda.ac.uk/uuid/0470e96f2d8245549ef2ba81842cdfd8
Citation identifier
Centre for Environmental Data Analysis (CEDA) / 0470e96f2d8245549ef2ba81842cdfd8
Point of contact
Organisation name Individual name Electronic mail address Role

ESA Greenland Ice Sheet CCI project team

unknown

 		Author

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Custodian

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Distributor

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

pointofContact

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Publisher
Maintenance and update frequency
Not planned
Update scope
Dataset
Keywords

GEMET - INSPIRE themes, version 1.0

  • orthoimagery
Access constraints
Other restrictions
Other constraints
Public data: access to these data is available to both registered and non-registered users.
Use constraints
Other restrictions
Other constraints
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.
Spatial representation type
Grid
Language
English
Topic category
  • Imagery base maps earth cover
N
S
E
W
thumbnail




Begin date
2013-03-31T23:00:00
End date
2017-03-31T22:59:59
Unique resource identifier
WGS 84
Distribution format
Name Version

Version 0.1 of the product contains three files:

1) NetCDF file containing the surface elevation change grids from AltiKa and

from Cryosat-2 (for comparison) for 2013-2017 and their associated errors

2) PNG plot of the surface elevation change from AltiKa

3) PNG plot of the surface elevation change from Cryosat-2
Distributor contact
Organisation name Individual name Electronic mail address Role

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Distributor
OnLine resource
Protocol Linkage Name
https://catalogue.ceda.ac.uk/uuid/0470e96f2d8245549ef2ba81842cdfd8

CEDA Data Catalogue Page
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/ice_sheets_greenland/data/greenland_surface_elevation_change/saral-altika/v0.1/

DOWNLOAD
OnLine resource
Protocol Linkage Name
http://www.esa-icesheets-greenland-cci.org/?q=webfm_send/165

Product User Guide
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk//neodc/esacci/ice_sheets_greenland/metadata/sample_images/sec_AltiKa_2013-2017_v0.1.png

Sample Image
OnLine resource
Protocol Linkage Name
https://climate.esa.int/projects/ice-sheets-greenland/

ESA CCI Greenland Ice Sheet project website
OnLine resource
Protocol Linkage Name
https://climate.esa.int/

ESA Climate Change Initiative website
Hierarchy level
Dataset

Conformance result

Title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication)
2010-12-08
Statement

Data were processed by the ESA CCI Greenland Ice Sheet project team and supplied to CEDA in the context of the ESA CCI Open Data Portal Project.

Metadata

File identifier
0470e96f2d8245549ef2ba81842cdfd8 XML
Metadata language
English
Character set
UTF8
Parent identifier
ESA Greenland Ice Sheet Climate Change Initiative (Greenland Ice Sheet CCI) Dataset Collection

394464f9c39445d3b6445d8e305841d7
Hierarchy level
Dataset
Date stamp
2026-03-08T03:17:38
Metadata standard name
UK GEMINI
Metadata standard version

2.3
Metadata author
Organisation name Individual name Electronic mail address Role

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Point of contact
 
 

Overviews

Spatial extent

thumbnail

Keywords

GEMET - INSPIRE themes, version 1.0

orthoimagery


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