EGU General Assembly 2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Irrigation-expansion-induced impacts model-intercomparison project (IRRMIP)

Yi Yao1, Kjetil Schanke Aas, Pedro Arboleda Obando, Mats Bentsen, Liang Chen, Benjamin Cook, Narayanappa Devaraju, Agnès Ducharne, Simon Gosling, Andrew Hartley, Jonas Jägermeyr, Colin Jones, Hyungjun Kim, David Lawrence, Peter Lawrence, Ruby Leung, Min-Hui Lo, Sonali McDermid, and the IRRMIP members*
Yi Yao et al.
  • 1Department of Hydrology and Hydraulic Engineering, Vrije Universiteit Brussel, Brussels, Belgium
  • *A full list of authors appears at the end of the abstract

As the most dominant freshwater-use practice, irrigation plays an important role in global and regional environmental changes. Its extent experienced a substantial increase during the 20th century, from less than 100 mha before 1950 to about 300 mha around the year 2000. To advance the scientific understanding of the irrigation-expansion-induced impacts during the last century, we launched a model-intercomparison project (MIP), through which we intend to discover its effects on different sectors, i.e. water, climate, and agriculture, with Earth system models. In the protocol, two experiments are designed, i) simulation with transient irrigation extent and ii) simulation with the irrigation extent fixed at the level of the year 1901. For every experiment, three ensemble members are required to reduce the uncertainty. Currently, the analysis of outputs will be focused on climate extremes, the water cycle, vegetation-carbon interactions and some social implications. In the next phase of IRRMIP, we plan to combine the Earth system model community with both the hydrological model and crop model communities.

IRRMIP members:

Yi Yao1, Kjetil Schanke Aas2, Pedro Arboleda Obando3, 4, Mats Bentsen5, Liang Chen6, Benjamin Cook7, Narayanappa Devaraju2, Agnès Ducharne3, 4, Simon Gosling8, Andrew Hartley9, Jonas Jägermeyr10, 11, 12, Colin Jones13, 14, Hyungjun Kim15, 16, David Lawrence17, Peter Lawrence17, Ruby Leung18, Min-Hui Lo19, Sonali McDermid20, Shruti Nath21, 22, Anton Orlov23, Yadu Pokhrel24, Heather Rumbold9, Yusuke Satoh15, Carl Schleussner21, Hannes Müller Schmied25, 26, Hiroaki Tatebe27, Ren-Jie Wu19, Tokuta Yokohata28, Kei Yoshimura29, Tian Zhou18, Wim Thiery1 1Department of Hydrology and Hydraulic Engineering, Vrije Universiteit Brussel, Brussels, Belgium. 2Department of Geosciences, University of Oslo, Oslo, Norway. 3Laboratoire METIS (UMR 7619, Sorbonne Université, CNRS, EPHE), Paris, France. 4Institut Pierre Simon Laplace (FR 636, Sorbonne Université, CNRS), Paris, France. 5NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway. 6Department of Earth and Atmospheric Sciences, University of Nebraska-Lincoln, Lincoln, NE, USA. 7NASA Goddard Institute for Space Studies, New York, NY, USA. 8School of Geography, University of Nottingham, Nottingham, UK. 9Met Office Hadley Centre, FitzRoy Road, Exeter, EX1 3PB, UK. 10Potsdam Institute for Climate Impact Research, Member of the Leibniz Association, Potsdam, Germany. 11Department of Computer Science, University of Chicago, Chicago, IL, USA. 12NASA Goddard Institute for Space Studies, New York, NY, USA. 13National Centre for Atmospheric Science, UK. 14School of Earth and Environment, University of Leeds, Leeds, UK. 15Moon Soul Graduate School of Future Strategy, Korea Advanced Institute of Science and Technology, Daejeon, Korea. 16Institute of Industrial Science, The University of Tokyo, Tokyo, Japan. 17Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, USA. 18Pacific Northwest National Laboratory, Richland, WA, USA. 19Department of Atmospheric Sciences, National Taiwan University, Taipei, Taiwan. 20Department of Environmental Studies, New York University, New York, NY, USA. 21Climate Analytics, Berlin, Germany. 22Institute of Atmospheric and Climate Sciences, ETH Zürich, Zürich, Switzerland. 23Center for International Climate Research (CICERO), Oslo, Norway. 24Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI, USA. 25Institute of Physical Geography, Goethe-University Frankfurt, Frankfurt am Main, Germany. 26Senckenberg Leibniz Biodiversity and Climate Research Centre Frankfurt (SBiK-F), Frankfurt am Main, Germany. 27Research Institute for Global Change (RIGC), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan. 28National Institute for Environmental Studies, Ibaraki, Japan. 29Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan.

How to cite: Yao, Y., Aas, K. S., Arboleda Obando, P., Bentsen, M., Chen, L., Cook, B., Devaraju, N., Ducharne, A., Gosling, S., Hartley, A., Jägermeyr, J., Jones, C., Kim, H., Lawrence, D., Lawrence, P., Leung, R., Lo, M.-H., and McDermid, S. and the IRRMIP members: Irrigation-expansion-induced impacts model-intercomparison project (IRRMIP), EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-14584,, 2023.