10.5880/PIK.2017.002 Reyer, Christopher 0000-0003-1067-1492 Potsdam-Institute for Climate Impact Research (PIK), Germany Asrar, Gassem Joint Global Change Research Institute, Pacific Northwest National Laborators, USA Betts, Richard Richard Betts 0000-0002-4929-0307 University of Exeter, UK Chang, Jinfeng 56582989700 Laboratoire des Sciences du Climat et de l'Environnement , France Chen, Min Pacific Northwest National Laboratory, USA Ciais, Philippe Laboratoire de Sciences du Climat et de l'Environnement LSCE, France Dury, Marie University of Liege, Belgium Francois, Louis 7003297832 Institut d'Astrophysique et de Géophysique, Belgium Henrot, Alexandra 56983138400 Institut d'Astrophysique et de Géophysique, Belgium Hickler, Thomas 0000-0002-4668-7552 Biodiversity and Climate Research Centre (BiK-F), Germany Ito, Akihiko 0000-0001-5265-0791 National Institute for Environmental Studies (NIES), Japan Jacquemin, Ingrid University of Liege, Belgium Nishina, Kazuya 0000-0002-8820-1282 National Institute for Environmental Studies (NIES), Japan Mishurov, Mikhail Institutionen für naturgeografi och ekosystemvetenskap, Sweden Morfopoulos, Catherine L-2484-2014 University of Exeter, UK Munhoven, Guy University of Liege, Belgium Ostberg, Sebastian 0000-0002-2368-7015 Potsdam-Institute for Climate Impact Research (PIK), Germany Pan, Shufen Auburn University, Alabama, USA Rafique, Rashid 0000-0001-9591-6588 Pacific Northwest National Laboratory (PNNL), USA Schaphoff, Sibyll 0000-0003-1677-8282 Potsdam-Institute for Climate Impact Research (PIK), Germany Steinkamp, Jörg 0000-0002-7861-8789 Biodiversity and Climate Research Centre (BiK-F), Germany Tian, Hanqin 0000-0002-1806-4091 Auburn University, USA Ren, Wei Yang, Jia Auburn University, USA Zeng, Ning University of Maryland, USA Zhao, Fang 0000-0002-4819-3724 Potsdam-Institute for Climate Impact Research (PIK), Germany Büchner, Matthias 0000-0002-1382-7424 Potsdam-Institute for Climate Impact Research (PIK), Germany ISIMIP2a Simulation Data from Biomes Sector GFZ Data Services 2017 Reyer, Christopher 0000-0003-1067-1492 Potsdam-Institute for Climate Impact Research (PIK), Germany Büchner, Matthias 0000-0002-1382-7424 Potsdam-Institute for Climate Impact Research (PIK), Germany Büchner, Matthias 0000-0002-1382-7424 Potsdam-Institute for Climate Impact Research (PIK), Germany Büchner, Matthias 0000-0002-1382-7424 Potsdam-Institute for Climate Impact Research (PIK), Germany ISIMIP Coordination Team Potsdam-Institute for Climate Impact Research, Germany Reyer, Christopher Potsdam-Institute for Climate Impact Research, Germany Morfopoulos, Catherine University of Exeter, UK Chang, Jinfeng Laboratoire des Sciences du Climat et de l'Environnement , France Francois, Louis Institut d'Astrophysique et de Géophysique, Belgium Steinkamp, Jörg Biodiversity and Climate Research Centre (BiK-F), Germany Ito, Akihiko National Institute for Environmental Studies (NIES), Japan Ostberg, Sebastian Potsdam-Institute for Climate Impact Research (PIK), Germany Tian, Hanqin Auburn University, USA Zhao, Fang Potsdam-Institute for Climate Impact Research (PIK), Germany 2013 1971/2012 Dataset https://esg.pik-potsdam.de/projects/isimip/ https://www.earthsystemcog.org/projects/cog/tutorials_web https://www.isimip.org/outcomes/#papers-isimip2a https://www.isimip.org/protocol/#isimip2a https://www.isimip.org/impactmodels https://www.isimip.org/gettingstarted/#input-data-bias-correction 10.5880/PIK.2019.005 CC BY 4.0 The Inter-Sectoral Impact Model Intercomparison Project (ISIMIP) provides a framework for the collation of a set of consistent, multi-sector, multi-scale climate-impact simulations, based on scientifically and politically-relevant historical and future scenarios. This framework serves as a basis for robust projections of climate impacts, as well as facilitating model evaluation and improvement, allowing for improved estimates of the biophysical and socio-economic impacts of climate change at different levels of global warming. It also provides a unique opportunity to consider interactions between climate change impacts across sectors.


ISIMIP2a is the second ISIMIP simulation round, focusing on historical simulations (1971-2010) of climate impacts on agriculture, fisheries, permafrost, biomes, regional and global water and forests. This will serve as a basis for model evaluation and improvement, allowing for improved estimates of the biophysical and socio-economic impacts of climate change at different levels of global warming.


The focus topic for ISIMIP2a is model validation, in particular with respect to the representation of impacts of extreme weather events and climate variability. During this phase, four common global observational climate data sets were provided across all impact models and sectors. In addition, appropriate observational data sets of impacts for each sector were collected, against which the models can be benchmarked. Access to all these data is provided through a central ISIMIP archive (see https://www.isimip.org/gettingstarted/#input-data-bias-correction).


The ISIMIP2a biome outputs are based on simulations from 8 global vegetation (biomes) models (CARAIB, DLEM, JULES-B1, LPJ-GUESS, LPJmL, ORCHIDEE, VEGAS, VISIT) according to the ISIMIP2a protocol (https://www.isimip.org/protocol/#isimip2a).
The ISIMIP2a biome outputs are based on simulations by different global vegetation models (CARAIB, DLEM, JULES-UoE, LPJ-GUESS, LPJmL, ORCHIDEE, VEGAS, VISIT) following the ISIMIP2a protocol. The biome models simulate biogeochemical processes, biogeography and ecosystem dynamics of natural vegetation and managed lands based on soil, climate and land-use information. A more detailed description of the models and model-specific amendments of the protocol are available here: https://www.isimip.org/impactmodels/.
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