PARENT SESSION
Organized Oral Session 34: Incorporating ecological processes at many scales into biogeochemical and global climate change models
Organizer(s): WM Post, JS Olson, and C Peng
Wednesday, August 10, 1:30 PM - 5:00 PM, Meeting Room 510b, Level 5, Palais des congrès de Montréal
Development of the coupled climate-terrestrial carbon cycle model.
Kato, Tomomichi*,1, Ito, Akihiko1, 1 Ecosystem Change Research Program, Yokohama, Kanagawa, Japan
ABSTRACT- Interactions between the climate and the terrestrial carbon cycle have the potential to provide major feedbacks on climate change, but major uncertainties in the magnitude of these feedbacks persists. To clarify those uncertainties, the terrestrial ecosystem carbon cycle model, Sim-CYCLE, is combined with the CCSR/NIES/FRCGC AGCM5.7b (including a land surface model: MATSIRO). The Sim-CYCLE derives the climate data from the AGCM and gives the LAI, CO2 concentration and Net Carbon Budget (net ecosystem production minus carbon emission due to the land use change) to the AGCM through the coupler in the MATSIRO. Now our group has almost accomplished the attachment cording of the Sim-CYCLE to MATSIRO-AGCM under the Kyousei-2 project. That combined model shows a reasonable distribution of the LAI, NPP and other carbon storages in the 1000yrs spin-up run.
Several climate research institutes in US, EU and Japan promote the coupled climate-carbon cycle model intercomparison project (C4MIP) that aims to investigate the plausible sensitivity range of the climate-carbon cycle system by using a number of independent models driven by a common set of forcings. To join in the C4MIP, the land use change components were added to the Sim-CYCLE according to the guideline (Grand Slam Protocol; Houghton, 1983). The interactive effect between the atmosphere and the terrestrial ecosystems (including the land use change) will be showed in the transient run of the 20th century in the near future.
Key words: global carbon cycle, terrestrial ecosystem, integrated model, climate-ecosystem feedback