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
Other
Fast Track
Increased human and economic losses from river flooding with anthropogenic warming. The data set includes: - Static maps (land use, economic variables, population) used to compute impacts - For each model realization, the merged global maps of economic damage for the historical (hist) and future (rcp8p5) periods, as well as statistic tables of impacts aggregated per continent and per country - For each model realization, the merged global maps of population affected computed with current socioeconomic conditions and with SSP3 and SSP5 population projections, and the statistic tables of impacts aggregated per continent and per country - Tables of variables used as input in the impact assessment procedure - Tables describing aggregated impact results
Supplementary
Socio-economic
ISIMIP2b
Annual global population data at 0.5° and 2.5' resolutions for the years 2006-2100 based on the population projections described in Jones & O’Neill (2016)
Supplementary
Simulated atmospheric climate
ISIMIP2b
Future (2006-2099) conditions provided based on CMIP5 output from MIROC5. These data are analogous to the data described here: https://www.isimip.org/gettingstarted/details/21/ but for this RCP not included in the ISIMIP2b simulation protocol.
Supplementary
Simulated atmospheric climate
ISIMIP2b
Future (2006-2099) conditions provided based on CMIP5 output from HadGEM2-ES. These data are analogous to the data described here: https://www.isimip.org/gettingstarted/details/52/ but for the this RCP not included in the ISIMIP2b simulation protocol.
Supplementary
Simulated atmospheric climate
ISIMIP2b
Future (2006-2299) conditions provided based on CMIP5 output from IPSL-CM5A-LR. These data are analogous to the data described here: https://www.isimip.org/gettingstarted/details/53/ but for this RCP not included in the ISIMIP2b simulation protocol.
Supplementary
Simulated atmospheric climate
ISIMIP2b
Future (2006-2099) conditions provided based on CMIP5 output from GFDL-ESM2M. These data are analogous to the data described here: https://www.isimip.org/gettingstarted/details/51/ but for this RCP not included in the ISIMIP2b simulation protocol.
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. For more specific information, thd data are provided in 5 different resolutions of land-use types: landuse-totals: the land surface is broadly categorized into rainfed (cropland_rainfed) and irrigated cropland (cropland_irrigated), and into pastures (pastures) landuse-5crops: the distribution of the five predominant crop types (c3ann, c3per, c4ann, c4per and c3nfx), delineating both occurences of rainfed/irrigated crops and occurences of nutrition/bioenergy crops landuse-15crops: provides areas specific to either important species, e.g. wheat, or species groups, such as pulses landuse-pastures: pastures areas are split into managed pastures (managed_pastures) and rangeland (rangeland) landuse-urbanareas: provides the per-cell coverage of 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 2006-2099.
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, RCP6.0 and RCP8.5) and extended-future (RCP2.6, 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, RCP6.0 and RCP8.5) 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) and future (RCP2.6, RCP6.0 and RCP8.5) 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
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.
Protocol
Observed atmospheric climate
ISIMIP2b
ISIMIP2a
The EWEMBI dataset was compiled to support the bias correction of climate input data for ISIMIP2b and the ISIMIP2a protocol extension. For a full technical description, see the DOI link below. The data set has been extended to year 2016 in November 2018.
Protocol
Socio-economic
ISIMIP2b
Annual country-level population, urban population and age structure (in five-year age 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 country-level GDP data for 1861-2005.
Protocol
Land use
ISIMIP2b
Historical land-use (LU) changes from the HYDE3.2 data (Klein Goldewijk, 2016) (see Figure 3).
Protocol
Land use
Fast Track
Harvested areas based on the MIRCA data set, covering irrigated and rainfed landuse.
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
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
Simulated ocean climate
ISIMIP2a
Ocean data from the GCM IPSL-CM5A-LR.
Protocol
Simulated atmospheric climate
ISIMIP2b
Pre-industrial (1661-1860), historical (1861-2010), future (RCP2.6, RCP6.0 and RCP8.5) 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
We provide the fertilization rate per our five canonical crop types, i.e. for both annual and perennial C3 and C4 crops, as well as for nitrogen fixing crops. The variables’ names are fertl_c3ann, fertl_c3per, fertl_c4ann, fertl_c4per and fert_c3nfx. The data are provided on an annual times step on the land surface of a global 0.5° × 0.5° grid. The units are kilograms per year and per hectare.
Protocol
Other human influences
ISIMIP2b
Annual and monthly, 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
Uncorrected pressure and wind fields at 10m above the land surface with 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

Input data changelog

Nov. 12, 2018

In accordance with the agreed ISIMIP2b protocol extension (will be incorporated into the protocol shortly), RCP8.5 runs are included as part of the protocol and have therefore been moved from "SecondaryInputData" to "InputData".

Nov. 7, 2018

The EWEMBI observational climate dataset, which previously ran until the year 2013, has been extended to the year 2016. It will be used to drive the new "histclim" runs in the ISIMIP2a protocol, as agreed at the Strategy Group Meeting in September 2018.

July 10, 2018

The original sources for observations and projections of spatially-explicit population data differ in spatial resolutionand are independently calibrated. Hence, population values for specific grid points can vary significantly between observations and projections, even when smoothing the data with a 5-year linear interpolation between 2005 and 20..

June 26, 2018

We now also provide monthly nitrogen deposition data. The data can be found on the DKRZ server in the directory /bb0820/data/isimip/isimip/ISIMIP2b/InputData/n-deposition. The protocol has been adjusted accordingly.


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 on the Modellers' Dashboard.

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 Federation (ESGF). 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

Nov. 5, 2018

Dear ISIMIP community,With this email, we’d like to give you some updates on recent and future events surrounding ISIMIP. In late September, we hosted the ISIMIP Strategy Group Meeting here at PIK. There, we discussed and decided on the scenario set-up for the next ISIMIP simulation round. The outcomes of the meeting are summarized in this report.

Aug. 16, 2018

Dear ISIMIP community, After some weeks of silence, we have some interesting announcements we would like to share with you: Currently, there is a vacancy for an interesting PostDoc position at SUSTech, Shenzhen, China, to work with Prof. Junguo Liu on the water chapter of IPCC AR6.At the Scenarios Forum 2019 (11-13 March, 2019, Denver, CO, USA),..

June 28, 2018

We’d like to provide you with some important updates about the ISIMIP protocol and newly available data. Protocol updates The ISIMIP2b protocol has been updated to reflect some sector-specific and general changes that have been discussed over the past months. The new version is available on the ISIMIP website.