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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: model description paper 29 Oct 2019

Submitted as: model description paper | 29 Oct 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Geoscientific Model Development (GMD).

MIROC-INTEG1: A global bio-geochemical land surface model with human water management, crop growth, and land-use change

Tokuta Yokohata1, Tsuguki Kinoshita2, Gen Sakurai3, Yadu Pokhrel4, Akihiko Ito1, Masashi Okada5, Yusuke Satoh1, Etsushi Kato6, Tomoko Nitta7, Shinichiro Fujimori8, Farshid Felfelani4, Yoshimitsu Masaki9, Toshichika Iizumi3, Motoki Nishimori3, Naota Hanasaki1, Kiyoshi Takahashi5, Yoshiki Yamagata1, and Seita Emori1 Tokuta Yokohata et al.
  • 1Center for Global Environmental Research, National Institute for Environmental Studies, Tsukuba 3058506, Japan
  • 2Collage of Agriculture, Ibaraki University, Ami 300393, Japan
  • 3Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization, Tsukuba 3058604, Japan
  • 4Departmentof Civil and Environmental Engineering, Michigan State University, East Lansing, Michigan 48823, USA
  • 5Center for Social and Environmental System Research, National Institute for Environmental Studies, Tsukuba 3058506, Japan
  • 6Institute of Applied Energy,Minato-ku, Tokyo 105003, Japan
  • 7Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa 2778564, Japan
  • 8Graduate School of Engineering, Kyoto University, Kyoto 6158540, Japan
  • 9Graduate School of Science and Technology, Hirosaki University, Hirosaki 0368561, Japan

Abstract. Future changes in the climate system could have significant impacts on the natural environment and human activities, which in turn affect changes in the climate system. In the interaction between natural and human systems under climate change conditions, land use is one of the elements that play an essential role. Future climate change will affect the availability of water and food, which may impact land-use change. On the other hand, human land-use change can affect the climate system through bio-geophysical and bio-geochemical effects. To investigate these interrelationships, we developed MIROC-INTEG1 (MIROC INTEGrated terrestrial model version 1), an integrated model that combines the global climate model MIROC (Model for Interdisciplinary Research on Climate) with water resources, crop production, land ecosystem, and land use models. In this paper, we introduce the details and interconnections of the sub-models of MIROC-INTEG1, compare historical simulations with observations, and identify the various interactions between sub-models. MIROC-INTEG1 makes it possible to quantitatively evaluate the feedback processes or nexus between climate, water resources, crop production, land use, and ecosystem, and to assess the risks, trade-offs and co-benefits associated with future climate change and prospective mitigation and adaptation policies.

Tokuta Yokohata et al.
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Tokuta Yokohata et al.
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