The mid-Holocene climate about 6000 years ago was simulated by using the atmospheric general circulation model. The orbital parameters for 6 ka BP (before present) were prescribed and other forcing factorswere set in the modern conditions. Results show that the large-scale climate change in the Aflican-Asianmonsoon areas during the summer-time is strongly compared to the present climate. while the changes inother seasons and regions are generally weak. The results also revealed the change of the low frequen...