Monitoring global ocean heat content from space geodetic observations to estimate the Earth energy imbalance

Marti, Florence; Meyssignac, Benoit; Rousseau, Victor; Ablain, Michaël; Fraudeau, Robin; Blazquez, Alejandro; Fourest, Sébastien

doi:https://doi.org/10.5194/sp-4-osr8-3-2024

Articles | Volume 4-osr8

https://doi.org/10.5194/sp-4-osr8-3-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Report:

8th edition of the Copernicus Ocean State Report (OSR8)

https://doi.org/10.5194/sp-4-osr8-3-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 4-osr8

30 Sep 2024

| OSR8 | Chapter 2.1

| 30 Sep 2024 | OSR8 | Chapter 2.1

Monitoring global ocean heat content from space geodetic observations to estimate the Earth energy imbalance

Florence Marti, Benoit Meyssignac, Victor Rousseau, Michaël Ablain, Robin Fraudeau, Alejandro Blazquez, and Sébastien Fourest

Data sets

Climate indicators from space: Ocean heat content and Earth energy imbalance (V5-0) Magellium/LEGOS https://doi.org/10.24400/527896/A01-2020.003

Sea level daily gridded data from satellite observations for the global ocean from 1993 to present Copernicus Climate Change Service https://doi.org/10.24381/CDS.4C328C78

ISAS temperature and salinity gridded fields N. Kolodziejczyk et al. https://doi.org/10.17882/52367

CERES Energy Balanced and Filled (EBAF) TOA and Surface Monthly means data in netCDF Edition 4.2 D. R. Doelling https://doi.org/10.5067/TERRA-AQUA-NOAA20/CERES/EBAF_L3B004.2

Global Ocean Heat Content (0-2000 m) time series and trend from Reanalysis & Multi-Observations Reprocessing E.U. Copernicus Marine Service Information (CMEMS) https://doi.org/10.48670/moi-00235

ECCO Central Estimate (Version 4 Release 4) ECCO Consortium et al. https://www.ecco-group.org/products-ECCO-V4r4.htm

Synopsis of the 50 ECCO Central Production Global Ocean and Sea-Ice State Estimate ECCO Consortium et al. https://doi.org/10.5281/zenodo.4533349

thomasfrederikse/EEI_GRACE: V1.0b thomasfrederikse https://doi.org/10.5281/zenodo.5104970

Heat stored in the Earth system 1960-2020: Where does the energy go? K. von Schuckmann et al. https://hdl.handle.net/21.14106/279f535efb48324f4f604bb390f74deadf268812

Short summary

As space geodetic observations are used to monitor the global ocean heat content change, they allow estimating the Earth energy imbalance (EEI). Over 1993–2022, the space geodetic EEI estimate shows a positive trend of 0.29 W m⁻² per decade, indicating accelerated warming of the ocean in line with other independent estimates. The study highlights the importance of comparing various estimates and their uncertainties to reliably assess EEI changes.