[A-CG30] Material circulations in Terrestrial Ecosystem: Water, Carbon and Nitrogen etc.

[ACG30-21] A design for the new Earth System Model with terrestrial carbon/nitrogen cycle processes

*Tomohiro HAJIMA¹, Shingo WATANABE¹, Michio KAWAMIYA¹, Michio WATANABE¹, Maki NOGUCHI¹, Hideki OKAJIMA¹, Hiroaki TATEBE¹, Akinori ITO¹, Dai YAMAZAKI¹, Kaoru TACHIIRI¹, Etsushi KATO², Masahiro SUGIYAMA³, Akihiko ITO⁴, Rumi OHGAITO¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.The Institute of Applied Energy, 3.UTokyo Policy Alternatives Research Institute, 4.National Institute for Environmental Studies)

Keywords:terrestrial ecosystems, carbon cycle, nitrogen cycle, Earth system models, Climate change projection, Biogeochemistry

Changes in the natural environment that are the result of human activities are becoming evident, and these changes are interrelated and can not be investigated without interdisciplinary collaboration between scientific fields. In order to understand the interrelated mechanism within the Earth's environment and to evaluate/project the anthropogenic impact on it, Earth system models (ESMs) have been developed by incorporating the biogeochemical processes of terrestrial/marine ecosystems into atmosphere-ocean general circulation models. These models have joined the Coupled Model Intercomparison Project (CMIP) and contributed to the assessment report of IPCC. We finished a process of reviewing our modeling and scientific activities up to the IPCC 5th assessment report, and we have started to design a new generation of ESMs. In this presentation, we briefly summarize the scientific/modeling tasks with ESM, and illustrate the design of the new ESM we are now developing.