10.48364/ISIMIP.311496.2 Jan Volkholz Jan Volkholz 0000-0002-2533-3739 Sebastian Ostberg 0000-0002-2368-7015 ISIMIP Repository 2022 EARTH SCIENCE > AGRICULTURE > AGRICULTURAL CHEMICALS > FERTILIZERS Matthias Büchner Matthias Büchner 0000-0002-1382-7424 Jochen Klar Jochen Klar 0000-0002-5883-4273 Iliusi Vega del Valle Iliusi Vega del Valle 0000-0001-6902-2257 Jan Volkholz Jan Volkholz 0000-0002-2533-3739 Jacob Schewe Jacob Schewe 0000-0001-9455-4159 Stefan Lange Stefan Lange 0000-0003-2102-8873 Franziska Piontek Franziska Piontek 0000-0003-4305-7552 Christopher Reyer Christopher Reyer 0000-0003-1067-1492 Matthias Mengel Matthias Mengel 0000-0001-6724-9685 María del Rocío Rivas López María del Rocío Rivas López 0000-0002-1984-3070 Christian Otto Christian Otto 0000-0001-5500-6774 Bjoern Soergel Bjoern Soergel 0000-0002-2630-7081 Anne Gädeke Anne Gädeke 0000-0003-0514-2908 Martin Park Martin Park 0000-0002-2467-3256 Barbara Templ Barbara Templ 0000-0002-9391-5888 Katja Frieler Katja Frieler 0000-0003-4869-3013 Potsdam Institute for Climate Impact Research 03e8s1d88 2022-06-02 en Input dataset https://protocol.isimip.org https://doi.org/10.5194/gmd-13-5425-2020 https://doi.org/10.22033/ESGF/input4MIPs.10468 https://doi.org/10.22033/ESGF/input4MIPs.10454 https://doi.org/10.48364/ISIMIP.311496.1 1.2 CC0 1.0 Universal Public Domain Dedication 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>We provide the nitrogen 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. In particular, this describes the application of industrial, mineral nitrogen. 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.<br>Data is available for the historical time period: 1850-2021.<br>Version 1.1 of this dataset adds the 1901soc scenario with fixed year-1901 direct human influences.<br>Version 1.2 adds data for the years 2020 and 2021. The fertilization rates are based on the harmonized land use dataset by Hurtt, G. et al. (2020, see also https://luh.umd.edu). They used different sources, please read their manuscript for of further information. <br>The data was extended to 2019-2021 by using the values for 2018. global -179.5 179.5 -89.5 89.5