Climate response of prescribed forcing from current and pre-industrial state : preliminary results

Abstract

Global warming for the last half century is beyond natural variability based on Paleoclimatic data at least for the previous 1,300 years. Many researchers indicated that the dramatical increase of green house gases is major cause of these unusual global warming (IPCC AR4, 2007). The effect of the green house gases on the recent global warming should also be investigated. We will analyse climate change by anthropogenic effect from comparison of pre-industrial with current climate simulation. The anthropogenic effect in this experiment is represented as prescribed boundary conditions in model such as sea surface temperature (SST) and green house gases (GHG) concentration. In this article, as preliminary results, current simulation output is validated by comparison with observations.