Dataset
ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Greenland Gravimetric Mass Balance from GRACE data, derived by DTU Space, v3.0
Abstract
This dataset provides a Gravimetric Mass Balance (GMB) product for the Greenland Ice Sheet (GIS), generated by DTU Space, based on monthly snapshots of the Earth’s gravity field provided by the Gravity Recovery and Climate Experiment (GRACE) and its follow-on satellite mission (GRACE-FO). The product relies on monthly gravity field solutions (L2) of release 06 generated at the Center for Space Research (University of Texas at Austin) and spans the period from April 2002 through May 2024.
The GMB product covers the full GRACE mission period (April 2002 - June 2017) and is extended by means of GRACE-FO data starting from June 2018, thus including 200 monthly solutions. The mass change estimation is based on inversion method developed at DTU Space.
Two different types of products are available. First, the gridded mass trends product is comprised of ice mass change trends for cells of equal area with 44 km resolution covering the whole GIS and different drainage basins. Second, the mass change time series product provides time series of integrated mass changes for 8 drainage basins and the entire GIS over different 5-year periods between 2002 and 2024. Basin definitions and further data descriptions can be found in the Algorithm Theoretical Baseline Document and the Product Specification Document which are provided on the project website.
Reference:
Barletta, V. R., Sørensen, L. S., and Forsberg, R. (2013) 'Scatter of mass changes estimates at basin scale for Greenland and Antarctica', The Cryosphere, 7, 1411-1432, doi:10.5194/tc-7-1411-2013.
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| 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(s): https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_icesheets_greenland_terms_and_conditions.pdf 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 DTU Space within the ESA Greenland Ice Sheet CCI project, and the original version is stored at data.dtu.dk https://doi.org/10.11583/DTU.12866579. A copy of the data has been supplied to the Centre for Environmental Data Analysis (CEDA) for the CCI Open Data Portal. |
| Data Quality: |
The GMB has intrinsic low spatial resolution (about 250 km), so even if the gridded products are provided at higher resolution, the mass changes pattern seems more spread than what actually is. Comparison with products that have higher spatial resolution should be done using suitable filters.
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| File Format: |
NetCDF, Text file, PNG
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Related Documents
Process overview
Instrument/Platform pairings
| GRACE instrument | Deployed on: GRACE |
| GRACE instrument | Deployed on: GRACE-FO |
Computation Element: 1
| Title | Derivation of the ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Greenland Gravimetric Mass Balance from GRACE data (CSR RL06), derived by DTU Space, v3.0 |
| Abstract | Estimates of mass change have been derived based on inversion methods developped at DTU Space. The underlying L2 monthly gravity field solutions used in the derivation were generated by the Center for Space Research (University of Texas at Austin) primarily using K-Band ranging, accelerometer and GPS observations acquired by the GRACE and GRACE-FO twin-satellite missions. For more information see the linked documentation. |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
| Output Description | None |
- var_id: time
- units: days
- long_name: Average time for time slice
- units: days
- long_name: End of time span
- var_id: end_time
- units: days
- var_id: GRACE epochs
- long_name: GRACE/GRACE-FO epochs
- var_id: Basin_0
- long_name: Mass changes for Basin_0
- var_id: Basin_1
- long_name: Mass changes for Basin_1
- var_id: Basin_2
- long_name: Mass changes for Basin_2
- var_id: Basin_3
- long_name: Mass changes for Basin_3
- var_id: Basin_4
- long_name: Mass changes for Basin_4
- var_id: Basin_5
- long_name: Mass changes for Basin_5
- var_id: Basin_6
- long_name: Mass changes for Basin_6
- var_id: Basin_7
- long_name: Mass changes for Basin_7
- var_id: Basin_8
- long_name: Mass changes for Basin_8
- long_name: Mass trend for time span
- var_id: GMB_trend
- units: days
- var_id: start_time
- long_name: Start of time span
Co-ordinate Variables
- units: degrees_north
- standard_name: latitude
- var_id: latitude
- long_name: latitude
- units: degrees_east
- standard_name: longitude
- var_id: longitude
- long_name: longitude
Temporal Range
2002-04-17T00:00:00
2024-05-19T00:00:00
Geographic Extent
83.2373° |
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-71.8357° |
-14.7067° |
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60.7386° |