The Climatic Effects of the Stratospheric Volcanic Ash

Qian Yongfu

doi:10.1007/BF02919136

Impact Factor: 5.8

Volume 10 Issue 2

Mar. 1993

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 1993 > 10(2): 135-146

The Climatic Effects of the Stratospheric Volcanic Ash

Qian Yongfu

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

Qian Yongfu

doi: 10.1007/BF02919136

Abstract
References
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Abstract:
The climatic effects of the stratospheric volcanic ash are simulated. The model we used is a primitive equation model with the P-σ incorporated coordinate system. The model has 5 layers in the atmosphere and 2 layers in the soil. The volcanic ash is introduced to the first (highest) model layer with a fixed optical thickness of 0.1275. Two comparative numerical experiments with and without the volcanic ash are made. Results show that the effects of the stratospheric volcanic ash on the formations of the mean climatic fields are much smaller than those of the land-sea distribution and the large scale topography. However, it does have contributions to the anomalies of the basic climatic states. The direct effect of the volcanic ash is to increase the temperature in the stratosphere. It can also influence the temperature and the height fields of isobaric surfaces, horizontal and vertical motions, precipitation and the surface climate through dynamic and thermodynamic processes in the atmosphere.
References

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Manuscript History

Manuscript received: 10 March 1993

Manuscript revised: 10 March 1993

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

The Climatic Effects of the Stratospheric Volcanic Ash

Qian Yongfu

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

Manuscript received: 1993-03-10
Manuscript revised: 1993-03-10

Abstract: The climatic effects of the stratospheric volcanic ash are simulated. The model we used is a primitive equation model with the P-σ incorporated coordinate system. The model has 5 layers in the atmosphere and 2 layers in the soil. The volcanic ash is introduced to the first (highest) model layer with a fixed optical thickness of 0.1275. Two comparative numerical experiments with and without the volcanic ash are made. Results show that the effects of the stratospheric volcanic ash on the formations of the mean climatic fields are much smaller than those of the land-sea distribution and the large scale topography. However, it does have contributions to the anomalies of the basic climatic states. The direct effect of the volcanic ash is to increase the temperature in the stratosphere. It can also influence the temperature and the height fields of isobaric surfaces, horizontal and vertical motions, precipitation and the surface climate through dynamic and thermodynamic processes in the atmosphere.