C3S2_360 Diagnostics of the Earth System energy balance derived from observations and reanalyses

Description du marché

ECMWF intends to award a Framework Agreement with one service contract. The expected duration of the Framework Agreement is 30 months and expected to commence in June 2025. The main goal of this contract is to expand the C3S monitoring capabilities to quantify the Earth System Energy Budget (EEB), its imbalance (EEI), as well as the associated uncertainty. The successful tender shall develop the required EEB and EEI diagnostic packages, provide recommendations on required datasets, interact with ECMWF experts to apply the diagnostics to the C3S monitoring suite and to evaluate the ERA6 production streams. The services shall include the following technical activities: - Implementation and furniture of robust and up-to-date methods, diagnostics software, and recommend datasets for estimating EEI and EEB and their uncertainty in terms of global budgets as well as meridional heat transports of ocean and atmosphere and ocean storage. The data sets should include atmospheric reanalysis, in particular ERA5, and ocean reanalyses. - Diagnostics for regional budgets including at least two focus regions, one of them being the Tropical Pacific. - Application of the EEB and EEI diagnostics to evaluate the quality of the ERA6 production streams during 2025 and 2026.

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