Uebbing, Bernd; Kusche, Jürgen: Gridded (0.25 deg) monthly ocean heat content from combining GRACE(-FO) satellite gravimerty and satellite altimetry [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.967495 (dataset in review)
Abstract:
Monthly ocean heat content (OHC) changes (in J/m**2) are provided on a global 0.25 deg grid for the time period 2002-04 till 2020-12. Missing month are due to non-availability of Gravity Recovery and Climate Experiment (GRACE) gravimetry observations and an about one year gap between the GRACE and its successor GRACE-FO missions. The steric expansion of the ocean due to the Earth's energy imbalance can be observed from a combination of GRACE (-FO) satellite gravimetry and satellite altimetry observations. Here we utilized the global fingerprint inversion method (Rietbroek et al., 2016, Uebbing et al., 2019) in order to derive global and regional sea level budgets. The steric fingerprints and corresponding estimated scaling factors are then utilized to rescale ORAS5 ocean reanalysis (Zuo et al, 2019; Copernicus Climate Change Service, 2021) derived OHC by the ratio of observed and modeled steric sea level as part of the GRACE(-FO) and Altimetry Mode Rescaling (GAMR) method. This methodology represents an extension to the conventional approach of scaling global steric sea level with one constant factor. The GAMR method allows to account for the fact that steric sea level and OHC spatio-temporal behavior is not identical enabling easy computation of global and regional OHC change.
References:
ORAS5 global ocean reanalysis monthly data from 1958 to present (2021). ECMWF, https://doi.org/10.24381/CDS.67E8EEB7
Rietbroek, Roelof; Brunnabend, Sandra-Ester; Kusche, Jürgen; Schröter, Jens; Dahle, Christoph (2016): Revisiting the contemporary sea-level budget on global and regional scales. Proceedings of the National Academy of Sciences, 113(6), 1504-1509, https://doi.org/10.1073/pnas.1519132113
Uebbing, Bernd; Kusche, Jürgen; Rietbroek, Roelof; Landerer, Felix W (2019): Processing Choices Affect Ocean Mass Estimates From GRACE. Journal of Geophysical Research: Oceans, 124(2), 1029-1044, https://doi.org/10.1029/2018JC014341
Zuo, Hao; Balmaseda, M A; Tietsche, Steffen; Mogensen, Kristian; Mayer, Michael (2019): The ECMWF operational ensemble reanalysis–analysis system for ocean and sea ice: a description of the system and assessment. Ocean Science, 15(3), 779-808, https://doi.org/10.5194/os-15-779-2019
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 273739224: Priority Programme 1889 Regional Sea Level Change and Society
German Research Foundation (DFG), grant/award no. 313917204: Reconciling ocean mass change and GIA from satellite gravity and altimetry (OMCG-2)
German Research Foundation (DFG), grant/award no. 441179229: Direct Measurement of Earth's Energy Imbalance with Geodetic Satellites – Feasibility Study (EEI-Geodetic)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File content | Content | Uebbing, Bernd | |||
| 2 | Binary Object | Binary | Uebbing, Bernd | |||
| 3 | Binary Object (File Size) | Binary (Size) | Bytes | Uebbing, Bernd |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
2 data points