C3S2_411 Lot 2 Operational Copernicus Climate Change Water Service

ECMWF, as the Entrusted Entity for the Copernicus Climate Change Service (C3S), invites tenders for the establishment of a unique operational C3S water service as a core provider of European and global scale climate and hydrological information to assist decision-making for a diverse range of users in the water sector at seasonal and climate timescales. Data will be delivered through the CDS and will offer a user-friendly web interface complete with links to data, applications, and demonstrations. This service covers the provision of three contracts to produce timely, high-quality information for the water sector encompassing historical data, a seasonal forecasting component (Lot 1), a collection of climate projection outlooks (Lot 2) and a user-oriented service and interface (Lot 3).

For each Lot, ECMWF intends to award a single Framework Agreement for a period of 36 months, which shall be implemented via Service Contracts expected to commence in Q4 2024. Tenderers are invited to submit their Tenders for any one of the Lots, a combination of two, or for all three Lots.

Lot 2: The multi-decadal to centennial multi-model component of the C3S operational water service

Lot 2 provides data and information based on multi-model climate projections at global and regional scale, for hydrological modeling. The main objective of Lot 2 is to deliver a multi-model climate forcing framework and a methodology for hydrological climate projections, encompassing all necessary steps, any applicable: selection of multiple climate models, ensembles, scenarios, bias adjustment, downscaling, common grids, standardized formats, and quality control. For the choice of the climate models, it is recommended to follow ECMWF guidance to ensure consistency with the ECMWF strategy and data quality filtering, including for example to be aligned with the models used in the C3S Climate Atlas, wherever possible.

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