The results showed that GCM could only reproduce the large scale climatic properties but failed in simulating the mesoscale systems. The simulated precipitation amount by GCM is reasonable.

• 结果表明 :GCM模式模拟出了我国西北和青藏高原地区夏季大尺度气候的基本特征 ,对降水的模拟也基本合理 ,但无法分辨出较小系统。