These files contain monthly precipitation and near surface temperature spatially averaged over the IPCC-WGI reference regions (v4) for CMIP5, CMIP6 and CORDEX model output datasets (a single run per model) separately for land, sea, and land-sea gridboxes. The source data from which the averages are calculated is the IPCC-WGI AR6 Interactive Atlas gridded dataset, available on its long-term archival site at DIGITAL.CSIC. It can also be accessed in a user-friendly manner by pointing to the copy of the dataset available on the Copernicus Data Store.
Regional averages are weighted by the cosine of latitude in all cases. Also, an observation-based product is provided in the same format for reference: W5E5 (Lange, 2019)
For the different CORDEX domains, aggregated results are calculated only in those regions with overlap larger than 80% (see Overlaps-CORDEX-ReferenceRegions.csv for details on the overlap areas, as percentages over the total area of the reference region; regular geographic grids for every CORDEX domain are obtained from Table 2 in the CORDEX specification archive; an annotated notebook for reproducibility is available at: notebooks/CORDEX-overlaps_Python.ipynb. The regions resulting for each domain are:
| Domain | Reference regions above 80% overlap |
|---|---|
| NAM | NWN, NEN, WNA, CNA, ENA, NCA, CAR |
| CAM | NCA, SCA, CAR, NWS, NSA, NES, SAM |
| SAM | SCA, NWS, NSA, NES, SAM, SWS, SES, SSA |
| ARC | GIC, NWN, NEN, NEU, RAR, RFE, ARO |
| AFR | MED, SAH, WAF, CAF, NEAF, SEAF, WSAF, ESAF, MDG, ARP |
| EUR | NEU, WCE, EEU, MED |
| MED | WCE, MED |
| MNA | MED, SAH, WAF, CAF, NEAF, SEAF, WCA, ARP, ARS |
| SEA | SEA |
| EAS | ECA, TIB, EAS, SAS, SEA, NAU, BOB |
| WAS | NEAF, SEAF, WCA, ECA, TIB, ARP, SAS, ARS, BOB, EIO |
| CAS | EEU, WSB, ESB, WCA, ECA, TIB, EAS, ARP |
| ANT | EAN, WAN |
| AUS | SEA, NAU, CAU, EAU, SAU, NZ |