The Influences of Snow Cover over the Tibetan Plateau on Asian Summer Monsoon
青藏高原积雪对亚洲夏季风影响的诊断及数值研究

The influences of snow cover over the Tibetan Plateau on Asian summer monsoon are stu died by composed analyses and conducting numerical experiments. The main conclusions are as follows: the snow cover over the Tibetan Plateau changes the characteristics of surface heating and directly in fluences on the Asian summer monsoon and climate of the eastern China. The possible mechanism link ing snow cover over the Tibetan Plateau and anomalous Asian summer monsoon is that more (less)snow cover over the Tibetan Plateau→weak (strong) surface heating in spring and summer→weak (strong) upward motion and strong (weak) environmental wind→unfavorable (favorable) condition for transporting surface sensible heating from near-surface layers to upper layers→weak (strong) tropospheric heating→low (high) tropospheric temperature surrounding the Tibetan Plateau→weak (strong) tropospheric temperature contrast south of the Tibetan Plateau in spring and summer→weak (strong) Asian summer monsoon.