This project aims at developing, testing and implementing innovative methods able to use space geodetic data from altimetry and gravimetry to generate the regional ocean heat content (OHC) change over the Atlantic Ocean. The ESA MOHeaCAN project strategy will be pursued and refined at regional scales both for the data generation and the uncertainty estimate.
In practice, we propose to develop a purely space-based product paying a careful attention to the error propagation along the processing scheme. This will enable to keep the product independent from in situ data which are the unique source of data for validation. By keeping the space-based product independent from in-situ data we ensure that we can validate properly and precisely both the space product and its uncertainty. In addition, the product will be only based on observations. With this approach there is no premature mixing with model solutions. The data and their uncertainty are driven by observations only. Thus, the space-based product fits the needs for any model validation. This is absolutely essential to ensure an efficient dissemination of the product among the climate modelling community.
These products will be used and analysed to address the major science questions helping us to better understand the complexity of the Earth and climate system. The study will be focused on the Meridional Heat Transport (MHT) in the North Atlantic with a regional heat budget. In parallel, our early adopters will assess the OHC products strengths and limitations for the implementation of new solutions for society.
The ESA Regional Initiative 4DATLANTIC OHC Project has been kicked-off on 7 July 2020, for a duration of 2 years.