The Influence of Soil Temperature Abnormality over the Tibetan Plateau in Spring on Summer Flooding of the Mid and Lower Reaches of the Changjiang River in 1998

The relationship was investigated between the torrential rain in the mid and lower reaches of the Changjiang River in summer 1998 and the thermal abnormality of the Tibetan Plateau in spring 1998. The statistics show that the 3-D thermal structure of 1998 with positive abnormality in the southern part and negative abnormality in the northern part is Just like that of 1991 and 1993 which are flood years. Meanwhile, the sensitivity experiment also verified that the 3-D thermal. Abnormality of the Tibetan Plateau in spring was the one of key consequences of the subsequent summer precipitation abnormality in 1998