Numerical Experiments of the Effects of Initial Desert Moisture on the Climate Change

Qian Yongfu

doi:10.1007/BF02919268

Impact Factor: 6.5

Volume 8 Issue 4

Oct. 1991

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 1991 > 8(4): 459-470

Numerical Experiments of the Effects of Initial Desert Moisture on the Climate Change

Qian Yongfu

1.
Department of Atmospheric Sciences, Nanjing University, Nanjing 210008

Qian Yongfu

doi: 10.1007/BF02919268

Abstract
References
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Abstract:
A numerical model with the p-sigma incorporated coordinate system and primitive equations is used to simulate the effect of initial soil moisture in desert areas on the climate change. The results show that the present deserts have a tendency to expand. When the initial soil moisture in the desert regions increases, the desert areas will shrink but can not disappear. The small deserts may not remain any longer when there are sources of water vapour around. Both the land-sea contrast and the topography are the background conditions of the present desert distribution through the mechanism of the downdrafts and the rare precipitation over the desert regions. The increase of the initial desert soil moisture will weaken the summer monsoon circulation and, consequently, the monsoonal precipitation.
References

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Manuscript History

Manuscript received: 10 October 1991

Manuscript revised: 10 October 1991

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Numerical Experiments of the Effects of Initial Desert Moisture on the Climate Change

Qian Yongfu

1. Department of Atmospheric Sciences, Nanjing University, Nanjing 210008

Manuscript received: 1991-10-10
Manuscript revised: 1991-10-10

Abstract: A numerical model with the p-sigma incorporated coordinate system and primitive equations is used to simulate the effect of initial soil moisture in desert areas on the climate change. The results show that the present deserts have a tendency to expand. When the initial soil moisture in the desert regions increases, the desert areas will shrink but can not disappear. The small deserts may not remain any longer when there are sources of water vapour around. Both the land-sea contrast and the topography are the background conditions of the present desert distribution through the mechanism of the downdrafts and the rare precipitation over the desert regions. The increase of the initial desert soil moisture will weaken the summer monsoon circulation and, consequently, the monsoonal precipitation.