Abstract
Regional variability in the carbon-cycle response of terrestrial ecosystems to global warming was simulated with a spatially explicit, process-based model (Sim-CYCLE), and analyzed for 22 regions worldwide. The terrestrial net flux of carbon dioxide (CO 2 ) during the period 2001-2099, was globally simulated on the basis of greenhouse gas emission scenarios (IPCC-SRES), and climate projections by coupled atmosphere-ocean general circulation models (AOGCMs). Most terrestrial ecosystems acted as net carbon sinks but with different magnitudes among the experiments (globally, 24 to 286 Pg C). Substantial inter-regional variability was found in terrestrial carbon-cycle response, because of differences in biome distributions and climate-change regimes. Moreover, among the experiments using the same CO 2 scenario, but different AOGCM climate projections, inconsistent results were obtained in the Amazon basin, Africa, Australia, and northern Asia, indicating the need for further research.
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Schedule a callMore From: Journal of the Meteorological Society of Japan. Ser. II
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