ISIMIP3 soil input data

The Inter-Sectoral Impact Model Intercomparison Project (ISIMIP) provides a framework for the collation of a consistent set of climate impact data across sectors and scales. It also provides a unique opportunity for considering interactions between climate change impacts across sectors through consistent scenarios.<br>The ISIMIP3a part of the third simulation round is dedicated to i) impact model evaluation and improvement and ii) detection and attribution of observed impacts according to the framework of IPCC AR5 Working Group II Chapter 18. To this end all simulations are driven by observed socio-economic information combined with either observed (factual) climate data or a detrended (counterfactual) version of the observed climate allowing for the generation of a "no climate change" baseline.<br>The ISIMIP3b part of the third simulation round is dedicated to a quantification of climate-related risks at different levels of global warming and socio-economic change. ISIMIP3b group I simulations are based on historical climate change as simulated in CMIP6 combined with observed historical socio-economic forcing. ISIMIP3b group II simulations are based on climate change according to the CMIP6 future projections combined with socio-economic forcings fixed at 2015 levels. ISIMIP3b group III simulations additionally account for future changes in socio-economic forcing.<br>Soil properties are highly relevant for many impact simulations, for instance plant growth and hydrology are influenced by their characteristics. Therefore ISIMIP provides global soil maps on the native ISIMIP grid to modellers.<br>In ISIMIP 3a/3b two soil data sets are provided. The first provides an upscaled map of soil textures that is based on the HWSD 1.1 soil data and was already used in ISIMIP2a. The second, newer one, is provided by the AgMIP project and gives the properties of a grid cell's dominant soil texture as well the properties of the soil predominantly occurring on crop lands.