Climate scenarios for integrated modelling. Deliverable D3.1 of the EU Horizon 2020 project OPTAIN.

Deliverable report D3.1 of the EU Horizon 2020 Project OPTAIN (Grant agreement No. 862756).

This report describes the preparation of the bias-corrected RCM simulation data for all case studies as an input to the OPTAIN modeling approaches.

Summary:

The objective of OPTAINs task 3.2 was to provide bias-corrected regional climate model (RCM) simulation data for all case studies as input to the OPTAIN modelling approaches. For this purpose, we used a common climate database - RCM simulations from the EURO-CORDEX project and the Representative Concentration Pathway (RCP) scenarios 2.6, 4.5 and 8.5. Bias correction was done using ERA5-Land reanalysis data with non-parametric empirical quantile mapping. Moreover, for the field scale modelling the interpolation of gridded bias-corrected climate model simulations to the location of the modelling sites was made using universal kriging.

This deliverable D3.1 of the OPTAIN project reports about the procedure of creating the bias-corrected RCM simulation data and provides all necessary background information.

The report starts with an introduction, followed by a description of the materials and method, where the process of preparing bias-corrected RCM simulation data is explained in six subchapters, namely: (1) required variables, (2) selection of reference data for bias correction, (3) selection of domains, (4) selection of EURO-CORDEX RCM simulations, (5) bias correction and interpolation of climate simulations and (6) evaluation and analysis. Finally, the last chapter presents an analysis of the results of the bias-correction procedure and the ensemble of RCM simulations. Together with this report, the dataset on climate scenarios for integrated modelling of the OPTAIN case studies was made publicly accessible on ZENODO: [DOI LINK] as a part of the OPTAIN project repository: [ZENODO Community LINK].