Downloading Input Data

Input data for ISIMIP is stored on the DKRZ server in Hamburg, Germany.
You need a user account
An individual username and password can be obtained by contacting the ISIMIP data manager, Matthias Büchner.  To upload your simulation results, a personalized account for the DKRZ server will also be necessary. Participating modelers are invited to create an account here. Please provide the project number 820 in the registration mask.


Here you can see how the input data for ISIMIP2b are organised on the DKRZ server. Note that if you don't require data over oceans, you can make use of the smaller, 'landonly' climate data files.

The ISIMIP2b data are stored on the DKRZ server and can be accessed using the path: /work/bb0820/ISIMIP/ISIMIP2b/InputData/. Below you can find an overview of the input data available. More detailed information can be found in the ISIMIP2b protocol (tables 1-7) and the input-data table.

For information about which data sets are available for download, see Availabilty of ISIMIP2b input data.

Climate & CO2

  • Climate data are in the folder /GCM_atmosphere/biascorrected/. Land-only versions in the folder /GCM_atmosphere/biascorrected/landonly/, and are organised according to scenario (picontrol, historical, rcp26, rcp60) and then global climate model (IPSL-CM5A-LR etc.). Ocean data can be found under /GCM_ocean/.
  • CO2 concentrations are in the folder /co2/ and are organised according to scenario. Files for scenarios where the scenario name starts with a year (e.g. '2005co2') contain contain the same value repeated for the necessary time window. For example, '2005co2' contains the CO2 concentration for the year 2005 repeated for each year from 2005 through to 2299.

Other human influences

All other input data describing land use and human influences can be found in the folder /InputData/[data-type], and further organised according to scenarios (1860soc, 2005soc, histsoc etc.). Scenarios with names starting  with a year, e.g. 2005soc, denote that the data are held constant at levels corresponding to that year. Where the future data are dependent on the climate scenario,  they are named according to the RCP; where the future data are dependent on the socio-economic scenario, the are named according to the SSP.


The input data files for ISIMIP2a can be copied directly via scp/rsync

Before starting to download the input data, please read these important instructions about versioning!

Folder Structure
All folders can be found on the vre2 server using the base path /work/bb0820/ISIMIP/ and the follwoing folders:
ISIMIP2a/InputData/climate/climate_co2/climate/Histobs/  Observational climate input data sets for historic validation runs
ISIMIP2a/InputData/climate_co2/climate/FastTrackGCMs Fast-Track climate input data for catch-up runs (ISIMIP2a) for sectors not in ISIMIP Fast Track
FastTrack/InputData/climate_co2/climate Fast-Track climate input data for catch-up runs (ISIMIP2a) for sectors already in ISIMIP Fast Track
ISIMIP2a/EvalData/ Data sets for model evaluation
ISIMIP2a/InputDataocean/ Oceanographic input data sets

Other Data Sets

The land-sea mask and all other input data sets can be found under /work/bb0820/ISIMIP/ISIMIP2a/InputData/other

via rsync directly from PIK

A specialized rsync service is available via PIK which grants read-only access to some of the input data. "rsync" is an open source file transfer program for Unix systems providing a very fast method for bringing remote files into sync. Windows ports of rsync are available from several internet sites.

rsync hostname:
rsync password: Isimip1234

To receive a list of remotely available files and sub folders use the following command:

  RSYNC_PASSWORD="Isimip1234" rsync -vL 
The following example will download all precipitation files from the WATCH (WFD) input data set to the current local folder. Replace the single dot at the end of the line with a different destination folder if wanted. The -u option will check for already present files on your end and will only transfer newer or updated files.

  RSYNC_PASSWORD="Isimip1234" rsync -auvL*.nc4 .
A few notes
  • You will not gain any improvements in download speeds or amount of data being transmitted by using the -z option since all NetCDF data are already internally compressed.
  • Make sure your machine and institutions network allows outgoing connections on port 873
  • More data set can be made available on request by asking the ISIMIP Data Manager.

Fast-Track Data

All input (and output) Fast Track data is available via the ESGF node Please find all information on how to obtain the ISIMIP Fast Track data in the Data Archive section.

There are two versions of the climate input data from the ISIMIP Fast Track:

  • The first version was used to force impact models in the ISIMIP Fast Track phase and should only be used for the ISIMIP2 catch-up experiments for sectors that were already part of the Fast Track (global water, global biomes, agriculture, vector-borne diseases & coastal infrastructure). It was published under the ISIMIP Fast Track ESGF project.
  • For all other purposes, i.e. future runs for new sectors and modeling exercises with no relation to ISIMIP, version 2 published under the ISIMIP2a ESGF project should be used. This corrected and extended version (denoted as ISIe in Hempel et al. 2013) overcomes several limitations in adjusting the daily variability.