EGU22-13305, updated on 28 Mar 2022
https://doi.org/10.5194/egusphere-egu22-13305
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Observation-based reconciliation of the Earth's Energy Imbalance budget constraint

Audrey Minière1, Karina von Schuckmann1, Maeva Monier1, Pierre-Yves Le Traon1, and Jean-Baptiste Sallée2
Audrey Minière et al.
  • 1Mercator Ocean International, Toulouse, France
  • 2Sorbonne Université, CNRS, LOCEAN, Paris, France

The Earth’s Energy Imbalance (EEI) represents the balance of heat fluxes between
the Earth and outer space in response to radiative forcings and associated climate feedbacks,
and as such is a key metric to understand and define global climate change. Recent
publications have shown that the EEI has doubled in the last two decades, which would have
major impacts on the different components of the Earth’s system. However, these results also
show inconsistencies in the quantification of this increase depending on the observing system
considered. In this study, we investigate two independent ways to estimate EEI from ocean
observations and from energy budget at the top of the atmosphere inferred from satellite. We
show that these two observing systems lead to consistent estimates of EEI variability and
amplitude over the period 2005-2019. Global Ocean Heat Content (GOHC) is derived from a
suite of ocean in situ temperature products, and is also compared to satellite estimate and to
ocean reanalysis estimate. We provide recommendations on how to achieve a consistent and
optimized observation-based comparison between estimates for the EEI budget constraint
approach from independent global climate observing system components and at different
time-scale ranging from interannual to decadal.

How to cite: Minière, A., von Schuckmann, K., Monier, M., Le Traon, P.-Y., and Sallée, J.-B.: Observation-based reconciliation of the Earth's Energy Imbalance budget constraint, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-13305, https://doi.org/10.5194/egusphere-egu22-13305, 2022.

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