ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Greenland Surface Elevation Change 1992-2014, v1.2

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 satellite (ERS‐1, ERS‐2, Envisat and Cryosat) radar altimetry. The ice mask is based on the GEUS/GST land/ice/ocean mask provided as part of national mapping projects, and based on 1980’s aerial photography. The data from ERS and Envisat are based on a 5‐year running average, using combined algorithms of repeat‐track (RT), along‐track (AT) or cross‐over (XO) algorithms, and include propagated error estimates.



It is important to note that different processing algorithms were applied to the ERS‐1, ERS‐2, Envisat and CryoSat data; for details see the Product User Guide (PUG), available on the CCI website and in the documentation section here. For ERS‐1, the radar data were processed using a cross‐over algorithm (XO) only. For ERS‐2 data and Envisat data in repeat mode, a combination of RT and XO algorithms was applied, followed by filtering. For across‐mission (i.e. ERS‐2‐Envisat) combinations, and for Envisat operating in a drifting orbit, an AT and XO combination was applied (the difference between RT and AT algorithms is that AT use reference tracks and searches for data in the vicinity of this track). For CryoSat data a binning/gridding and plane fit method has been applied, following by weak filtering (0.05 degree resolution).

Simple

Date (Publication)
2016-04-15T14:38:14
Date (Creation)
2016-04-15T14:38:14
Citation identifier
https://catalogue.ceda.ac.uk/uuid/a7b87a912c494c03b4d2fa5ab8479d1c
Citation identifier
Centre for Environmental Data Analysis (CEDA) / a7b87a912c494c03b4d2fa5ab8479d1c
Point of contact
Organisation name Individual name Electronic mail address Role

Unavailable

Sørensen, Louise

Unavailable

 		Author

Unavailable

Simonsen, Sebastian

Unavailable

 		Author

Unavailable

Meister, Rakia

Unavailable

 		Author

Unavailable

Forsberg, Rene

Unavailable

 		Author

Unavailable

Khvorostovsky, Kirill

Unavailable

 		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
Unknown
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
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Begin date
1992-01-01T00:00:00
End date
2014-12-31T00:00:00
Unique resource identifier
WGS 84
Distribution format
Name Version

Files are provided in both NetCDF (.nc) and ASCII Gravsoft (.gri) format, as well as .png images.



In ascii gravsoft format the data are stored row‐wise in E‐W rows, from N to S, headed by a two‐line label defining coordinate limits and projection. This format is the simplest possible ASCII grid format. Unknown values are flagged by 9999. The grid label for the CCI data is:

‐3350000. ‐650000. ‐650000. 850000. 5000. 5000. (this is N1, N2, E1, E2, dN, DE in meter)

‐70 ‐45 (minus reference latitude, central meridian in degrees)

The CCI data grid contains a total 541 x 301 points. First data value in file is thus the NW cormer (N = ‐650 km,E = ‐650 km) and last value the SE corner (N = ‐3350 km, E = 850 km). Stereographic projections have by default (0,0) at the North Pole.



The data use a Polar stereographic projection, WGS84 ellipsoid, with a reference latitude of 70N, and central meridian of 45W

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/a7b87a912c494c03b4d2fa5ab8479d1c

CEDA Data Catalogue Page
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/ice_sheets_greenland/data/greenland_surface_elevation_change/v1.2

DOWNLOAD
OnLine resource
Protocol Linkage Name
http://www.esa-icesheets-cci.org/

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

ESA Climate Change Initiative website
OnLine resource
Protocol Linkage Name
http://www.sciencedirect.com/science/article/pii/S0034425714005148

Sørensen, S., Simonsen, S., Meister, R., Forsberg, R., Levinsen, J. and Flament, T. (2015): Envisat‐derived elevation changes of the Greenland Ice Sheet, and a comparison with ICESat results in the accumulation area, Remote Sensing of the Environment, 04/2015; 160. DOI: 10.1016/j.rse.2014.12.022.

OnLine resource
Protocol Linkage Name
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5970115&filter%3DAND%28p_IS_Number%3A6117787%29

Khvorostovsky, K.S. (2012) Merging and analysis of elevation time series over Greenland ice sheet from satellite radar altimetry, IEEE Transactions on Geoscience and Remote Sensing, 50 (1), art. no. 5970115, pp. 23‐36.

OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/ice_sheets_greenland/docs/greenland_sec_2015_v1.2_meta.pdf

Greenland Surface Elevation Change Dataset Metadata pdf
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/ice_sheets_greenland/metadata/sample_images/sec_2010_2014_cs2.png

Sample Image
OnLine resource
Protocol Linkage Name
http://esa-icesheets-greenland-cci.org/index.php?q=webfm_send/165

Product User Guide
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
a7b87a912c494c03b4d2fa5ab8479d1c 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
2026-04-16T02:06:53
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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