DISTORTION AND OCCLUSION OF COLD FRONTS UNDER THE INFLUENCES OF OROGRAPHY

Xiao Qingnong

doi:10.11676/qxxb1994.051

Acta Meteorologica Sinica > 1994 > (4): 414-423. > DOI: 10.11676/qxxb1994.051

Xiao Qingnong. 1994: DISTORTION AND OCCLUSION OF COLD FRONTS UNDER THE INFLUENCES OF OROGRAPHY. Acta Meteorologica Sinica, (4): 414-423. DOI: 10.11676/qxxb1994.051

Citation:

Xiao Qingnong. 1994: DISTORTION AND OCCLUSION OF COLD FRONTS UNDER THE INFLUENCES OF OROGRAPHY. Acta Meteorologica Sinica, (4): 414-423. DOI: 10.11676/qxxb1994.051

Citation:

Xiao Qingnong. 1994: DISTORTION AND OCCLUSION OF COLD FRONTS UNDER THE INFLUENCES OF OROGRAPHY. Acta Meteorologica Sinica, (4): 414-423. DOI: 10.11676/qxxb1994.051

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DISTORTION AND OCCLUSION OF COLD FRONTS UNDER THE INFLUENCES OF OROGRAPHY

Xiao Qingnong¹

Nanjing University, Nanjing, 210008

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Received Date: July 13, 1992
Revised Date: October 03, 1992
Published Date: February 19, 2013

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Abstract

Following classical theory, a two-layer frontal model is designed. It assumes that frontal surface is the zero-order discontinuty of density. In this paper, the model is used to study orographically distorted and occluded fronts. It is indicated that the distortion and occlusion of cold fronts are different under different conditions of orography. Frontal intensity has also influences on the distortion and occlusion. Some rules are revealed and compared with observations. In addition, we have analysed the vertical structure of cold front above mountain and found that frontal surface may be bulged under the influence of orography when it climes the mountain. The bulge of frontal surface is just like the bore which is pointed out by Lone(1972) when he analvsed fluid over obstacles.
- Distortion,
- Occlusion,
- Cold front,
- Influence of orography

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