Input data set: GCM atmospheric climate data (Fast Track)

Daily-resolution, bias-corrected climate data from the global climate models MIROC-ESM-CHEM, NorES1-M, IPSL-CM5A-LR, GFDL-ESM2M, HadGEM2-ES covering the period 1950-2099 (historical run up to 2004, then split into 4 RCPs), downscaled to a 0.5°x0.5° lat-lon grid. For a full technical description, see the DOI link below (Hempel, et al., 2013a).



Data Type: Simulated atmospheric climate
Simulation rounds: Fast Track
Scenarios: historical, rcp26, rcp45, rcp60, rcp85
Variables: tasmax, tas, tasmin, uas, rlds, wind, vas, rhs, rsds, prsn, ps, pr
Specifications

The data were bias corrected following the method described in Hempel et al. (2013) http://www.earth-syst-dynam.net/4/219/2013/esd-4-219-2013.html, which should be cited when using this data set.

Near-surface wind magnitude is measured at 10m above the land surface. The relative humidity corresponds to 2m above the land surface.

Data source

The global, gridded climate data were taken from the ISIMIP Fast Track input-data catalogue (Warszawski et al., 2014), which are available under the DOI http://doi.org/10.5880/PIK.2016.001 (Hempel, et al., 2013a). The original data were retrieved from the CMIP5 archive and bias-corrected using the method described in Hempel et al. (2013b).

Hempel, S., Frieler, K., Warszawski, L., Schewe, J., & Piontek, F. (2013a). Bias corrected GCM input data for ISIMIP Fast Track. GFZ Data Services. doi:10.5880/PIK.2016.001

Hempel, S., Frieler, K., Warszawski, L., Schewe, J., & Piontek, F. (2013b). A trend-preserving bias correction – the ISI-MIP approach. Earth System Dynamics, 4(2), 219–236. doi:10.5194/esd-4-219-2013

Warszawski, L., Frieler, K., Huber, V., Piontek, F., Serdeczny, O., & Schewe, J. (2014). The Inter-Sectoral Impact Model Intercomparison Project (ISI-MIP): Project framework. Proceedings of the National Academy of Sciences, 111, 3228–3232. doi:10.1073/pnas.1312330110

Caveats

Note that there are *two versions* of the climate input data from the ISIMIP Fast Track. More information can be found here: https://www.isimip.org/gettingstarted/data-access/#specific-information-for-each-simulation-round.

Relative humidity was *not* bias corrected.

The native resolution of the HadGEM2-ES data is 1.25°x1.85°.

Within the spin-up data set, consistency between the total wind speed (wind) and the wind components (uas, vas) is not guaranteed. In particular, the wind speed calculated from uas and vas differs slightly from the provided variable wind (i.e., correlation greater than 0.95), which is an artefact of the applied detrending procedure.

When comparing results obtained using input data at different resolutions, bear in mind that global totals of a given input variable are not necessarily identical at different resolutions, due to the different land fractions.

Download Instructions

For ISIMIP participants, these files are available for download on the DKRZ server vre2 using the path /ISIMIP/FastTrack/InputData/climate_co2/climate/.

For external users, these data will shortly be made available on the ISIMIP node of the ESGF server (https://esg.pik-potsdam.de/projects/isimip/). Currently they are available via an rsync facility (described here: https://www.isimip.org/gettingstarted/data-access/#for-external-non-participant-users), for which the password will be provided upon request (info@isimip.org).