VALIDATION STUDY ON THE EAST ASIAN CLIMATE SIMULATED BY CCM2

The NCAR community climate model was run for 20 years and the simulated East Asian clim ate was anal ysed and checked against the observation data.It is found that the large scale features of the East Asia climate were simulated pretty well by the model,though there are still some discrepancies between the model output and the observation.The simulated geopot ential height,wind and temperature field are very close to the observation.The large scale systems such as Subtro pical High,Mongolia High,Indian Low which have import antinfluence on the East Asia Monsoon are also simulated pretty well.It is also found that the moisture field is not simulated so well as those fields mentioned above.The sim ulated precipitation of the model have rather big difference with the observ ations.These suggestthat some physical processes in the CCM2 need to be improved.