Getting Started



Terms of use

A document describing the rules regarding using the ISIMIP simulation data can be found here.


Input Data & Bias Correction

The ISIMIP framework includes bias-corrected climate-input data sets on a 0.5°x0.5°C global grid and at daily time steps. Additional socio-economic and human-influence data are also available, and detailed in the table below.

For ISIMIP2b, the bias-correction method has been updated and improved (see the DOI for the bias-correction code). See here for the ISIMIP2b bias-correction fact sheet. See here for information on the Fast-Track bias-correction method.

If published input data sets for any reason need to be replaced or updated, you will find details of these changes in the input data change log below.

Information about accessing ISIMIP input data.

Availability of ISIMIP2b input data.

Use the table's search box to limit input data sets to a chosen simulation round, data type, or to search for a specific data set.

Data set Protocol relation Data type Simulation round Description
Supplementary
Simulated atmospheric climate
ISIMIP2b
Protocol
Land use
ISIMIP2b
Time-varying historical crop-land areas for 6 land-use types: rain-fed crop land, irrigated crop-land, rain-fed bioenergy, irrigated bio-energy, pastures, natural vegetation and urban areas.
Protocol
Socio-economic
ISIMIP2b
Country-level population data for the years 1861-2009.
Protocol
Socio-economic
ISIMIP2b
Annual GDP data on a 0.5°x0.5° grid for 2010-2100.
Protocol
Socio-economic
ISIMIP2b
Annual country-level GDP data for the SSP2 scenario for 2006-2100 based on a linear temporal interpolation of the OECD data.
Protocol
Simulated atmospheric climate
ISIMIP2b
Pre-industrial (1661-1860), historical (1861-2010), future (RCP2.6 and RCP6.0) and extended-future (2100-2299) conditions provided based on CMIP5 output from IPSL-CM5A-LR. Output includes the physical and biogeochemical ocean data required by the marine ecosystem sector of ISIMIP.
Protocol
Simulated atmospheric climate
ISIMIP2b
Pre-industrial (1661-1860), historical (1861-2010), future (RCP2.6 and RCP6.0) and extended-future (2100-2299) conditions provided based on CMIP5 output from HadGEM2-ES.
Protocol
Simulated atmospheric climate
ISIMIP2b
Pre-industrial (1661-1860), historical (1861-2010), future (RCP2.6 and RCP6.0) and extended-future (2100-2299) conditions provided based on CMIP5 output from GFDL-ESM2M. Output includes the physical and biogeochemical ocean data required by the marine ecosystem sector of ISIMIP.
Protocol
Other human influences
ISIMIP2b
ISIMIP2a
Catch data by country or EEZ or LME or globally.
Protocol
Land use
ISIMIP2a
Time-varying historical crop-land areas for 12 crop-functional types and pastures for rainfed and irrigated land use. Based on MIRCA 2000 and historical trends from HYDE 3.0.
Protocol
Other
ISIMIP2b
ISIMIP2a
Fast Track
Protocol
Other human influences
ISIMIP2b
Water abstraction for domestic and industrial uses consistent with SSP2.
Protocol
Simulated ocean climate
ISIMIP2b
Non bais-corrected 3D oceanic temperature fileds on original GCM grid with monthly resolution from the GCMs: IPSL-CM5A-LR, GFDL-ESM2M, MIROC5, HadGEM2-ES.
Protocol
Simulated atmospheric climate
ISIMIP2b
Non bais-corrected 3D humidity and temperature fileds on original GCM grid with monthly resolution from the GCMs: IPSL-CM5A-LR, GFDL-ESM2M, MIROC5, HadGEM2-ES.
Protocol
Emissions
ISIMIP2b
ISIMIP2a
Fast Track
Atmospheric CO2 concentration for 1661-2299. Values are constant for 1661-1860, following observations from 1861-2005, and correspond to rcp26 and rcp60 from 2006-2299.
Protocol
Observed atmospheric climate
ISIMIP2b
The EWEMBI dataset was compiled to support the bias correction of climate input data for ISIMIP2b. For a full technical description, see the DOI link below.
Protocol
Socio-economic
ISIMIP2b
Annual country-level population, urban population and age structure (in five-year bands) based on SSP2 from IIASA (population & age structure) and NCAR (urbanshare).
Protocol
Socio-economic
ISIMIP2b
Annual global population data at 0.5° and 5' resolutions for the years 2006-2099 based on the national SSP2 population projections as described in Samir and Lutz, (2014).
Protocol
Simulated atmospheric climate
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.
Protocol
Simulated ocean climate
ISIMIP2a
The ESM2M run is a fully coupled free running climate model forced by historical and future scenario GHGaerosol, solar boundary conditions without flux adjustment or other restoring to observations using TOPAZv2 as in Dunne et al 2013. DOI: 10.1175/JCLI-D-12-00150.1
Protocol
Simulated ocean climate
ISIMIP2a
The COBALT run is as described in: http://www.sciencedirect.com/science/article/pii/S0079661113001079. It uses the same basic ocean-ice setup as Dunne et al., 2013 but is forced with reanalysis.
Protocol
Other
ISIMIP2b
ISIMIP2a
Fast Track
The dam data is based on GRanDv1.1 (Lehner et al., 2011, DOI: 10.1890/100125), but adjusted to match the river-routing in DDM30. Use of these data sets is recommended but, if unfeasible, groups may use their default dataset. For a comparison of the GranD/ISIMIP dataset with the default WaterGAP and LPJmL datasets, see https://www.arcgis.com/home/item.html?id=d966db9c7b2949ac8380458d7020adf9
Protocol
Observed atmospheric climate
ISIMIP2a
Daily-resolution observed climate data on a global (land and ocean) 0.5°x0.5° lat-lon grid from the Global Soil Wetness Project Phase 3 (GSWP3), based on the reanalysis data set 20CR and using the bias targets GPCC, GPCP, CPC-Unified, CRU and SRB. The data set covers the period 1901‐2010.
Protocol
Socio-economic
ISIMIP2b
Annual global population data at 0.5° and 5' resolutions for the years 1861-2005 on a 0.5° and 5' grid.
Protocol
Socio-economic
ISIMIP2b
Annual country-level GDP data for 1861-2005.
Protocol
Observed atmospheric climate
ISIMIP2a
Daily-resolution observed climate data on a global (land and ocean) 0.5°x0.5° lat-lon grid. PGMFD v.2 (Princeton) is from he Terrestrial Hydrology Group at Princeton University, based on the reanalysis data set NCEP/NCAR Reanalysis I and using the bias targets CRU, SRB, TRMM, GPCP & WMO and validated against GSWP2. The PGMFD v.2 data set covers the period 1901‐2012. WATCH (WFD) Derived from the WATCH Project, based on the reanalysis data set ERA-40 and using the bias target GPCC. The data set covers the period 1901‐2001. WATCH+WFDEI Based on the reanalysis data set ERA-Interim and using the bias target GPCC. The data set covers the period 1901‐2012, where the data for 1901-1978 are taken from WFD, and from 1979 onwards from WFDEI.GPCC
Protocol
Land use
ISIMIP2b
Historical land-use (LU) changes from the HYDE3.2 data (Klein Goldewijk, 2016) (see Figure 3).
Protocol
Simulated ocean climate
ISIMIP2a
Ocean data from the GCM IPSL-CM5A-LR.
Protocol
Land use
Fast Track
Harvested areas based on the MIRCA data set, covering irrigated and rainfed landuse.
Protocol
Simulated atmospheric climate
ISIMIP2b
Pre-industrial (1661-1860), historical (1861-2010), future (RCP2.6 and RCP6.0) and extended-future (2100-2299) conditions provided based on CMIP5 output from MIROC5. Output includes the physical and biogeochemical ocean data required by the marine ecosystem sector of ISIMIP.
Protocol
Other human influences
ISIMIP2b
Annual crop-specific input per ha of crop land for C3 and C4 annual, C3 and C4 perennial and C3 Nitrogen fixing.
Protocol
Other human influences
ISIMIP2b
Annual, 0.5° gridded data for 1850-2099 derived from the average of three atmospheric chemistry models (i.e., GISS-E2-R, CCSM-CAM3.5, and GFDL-AM3) in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) (0.5° x 0.5°).
Protocol
Observed atmospheric climate
ISIMIP2a
Daily-resolution observed climate data on a global (land and ocean) 0.5°x0.5° lat-lon grid from the Terrestrial Hydrology Group at Princeton University, based on the reanalysis data set NCEP/NCAR Reanalysis I and using the bias targets CRU, SRB, TRMM, GPCP & WMO and validated against GSWP2. The data set covers the period 1901‐2012
Protocol
Socio-economic
Fast Track
Historical (1950-2009) and future projections (2010-2100) of country-level and gridded population data based on the Shared Socio-economic Pathways (SSPs) for SSP1-SSP5.
Protocol
Simulated atmospheric climate
ISIMIP2b
Unvorrect pressure and wind fields at 3-hrly resolution for the GCMs IPSL-CM5A-LR (1861-2299), MIROC5 (1861-2099) and GFDL-ESM2M (1861-2099).
Protocol
Other
ISIMIP2b
ISIMIP2a
Fast Track
DDM30 River-routing network data.
Protocol
Other
ISIMIP2b
Total climate-driven regional sea level projections on a global 0.5x0.5° grid. Projection is a combination of ocean dynamic sea level fields and steric global contribution from the ISIMIP GCMs, and the fingerprints from glaciers and the Greenland and Antarctic ice sheets. Tthe time-dependent fingerpints were generated by scaling a time-independent fingerprint (see Bamber and Riva 2010) with the respective global timeseries for each contribution. Uncertainty for fingerprints is only from the global timeseries.
Protocol
Observed atmospheric climate
ISIMIP2a
Daily resolution climate data on a global 0.5°x0.5° lat-lon grid: Derived from the WATCH Project, based on the reanalysis data set ERA-40 and using the bias target GPCC. The data set covers the period 1901‐2001. Related website: http://www.waterandclimatechange.eu/about/watch-forcing-data-20th-century When referring to the WATCH data set, the following paper should be cited: Weedon, G.P., S.S. Gomes, P.P. Viterbo, W.J. Shuttleworth, E.E. Blyth, H.H. Österle, J.C. Adam, N.N. Bellouin, O.O. Boucher, and M.M. Best, 2011: Creation of the WATCH Forcing Data and Its Use to Assess Global and Regional Reference Crop Evaporation over Land during the Twentieth Century. J. Hydrometeor., 12, 823–848, doi: 10.1175/2011JHM1369.1
Protocol
Observed atmospheric climate
ISIMIP2a
Daily-resolution observed climate data on a global (land only) 0.5°x0.5° lat-lon grid, based on the reanalysis data set ERA-Interim and using the bias target GPCC. The data set covers the period 1901‐2012, where the data for 1901-1978 are taken from WFD, and from 1979 onwards from WFDEI.GPCC
Protocol
Simulated atmospheric climate
ISIMIP2b
Uncorrected daily wind components at 250hPa and 850hPa on original GCM grid for the GCMs: GFDL-ESM2M, MIROC5, IPSL-CM5A-LR & HadGEM-ES.

Input data changelog

Sept. 12, 2017

The future land-use totals data will be replaced in order to ensure consistency with the land-use data divided into 15 different crop types. The new future land-use patterns, both totals and 15 crop types, will be published soon.

July 5, 2017

We will shortly publish a data set of industrial and domestic water consumption and withdrawals covering the entire period from 1901 to 2050. In order to ensure a smooth transition between the past and the future, the previously published future scenarios will be slightly modified. The historical data sets are available now and represents the ave..

Feb. 18, 2016

The Princeton data set provided to you for use in the ISI-MIP2.1a simulations for the period 1901-1947 has been superceded by a corrected version. The problem was a mistake in the data provider's processing scripts for temperature and humidity. A decision has not yet been reached as to whether simulations using these data should be re-run wit..

Jan. 14, 2015

As a follow-up to the Version 2 bug, the WFDEI period was processed with an improper land-sea mask leading to about 200 grid cells holding zero values for the WFDEI Period (1979-2012). Mainly smaller islands and some coast lines were affected (see red points below). The detrended data and data before 1979 were not affected and are the sames a..


How to find and transfer ISIMIP data

For ISIMIP participants

Access to the ISIMIP input and output data for ISIMIP participants (i.e. modelling groups contributing simulations according to the ISIMIP protocol) is through the DKRZ server in Hamburg Germany. Information about applying for a DKRZ account and accessing these data can be found here.

For external users

Access to the ISIMIP input and output data for external users (i.e. non participants), is provided via a node of the Earth System Grid (ESG). Information about accessing these data can be found here. External users of ISIMIP output data should pay special attention to the ISIMIP terms of use.


Sector-specific information


Newsletter

Oct. 19, 2017

With the IPCC Special Report submission deadline in just under 2 weeks(!), we would like to give you an update on the availability of ISIMIP2b simulation data, which can be downloaded and used by anyone, so long as the terms of use are adhered to. Below is a list of models that have uploaded data to date for Group 1 & 2 experiments.

Oct. 16, 2017

We are delighted to announce that the future land-use data for ISIMIP2b is ready, making it possible to do the Group 3 experiments. You can now access the following land-use scenario data in the .../ISIMIP2b/InputData/landuse/ folder on the DKRZ server: 1860soc (1860-2005) histsoc..

Sept. 12, 2017

Simulation data ready to be used 24 models have submitted data based on the ISIMIP2b simulation protocol. These models cover the agriculture, water (global), water (regional), forests and biomes sectors. We are aware of more models still working on simulations, so we expect this ensemble to grow.