Chen Zhongming, Min Wenbin, Xu Maoliang, Gao Wenliang. 2004: MESO-SCALE CHARACTERISTICS OF THE UNBALANCED FORCE OF ATMOSPHERIC MOTION AND ENVIRONMENTAL FIELDS OF RAIN STORM ON 20—21 JULY 1998. Acta Meteorologica Sinica, (3): 375-383. DOI: 10.11676/qxxb2004.038
Citation: Chen Zhongming, Min Wenbin, Xu Maoliang, Gao Wenliang. 2004: MESO-SCALE CHARACTERISTICS OF THE UNBALANCED FORCE OF ATMOSPHERIC MOTION AND ENVIRONMENTAL FIELDS OF RAIN STORM ON 20—21 JULY 1998. Acta Meteorologica Sinica, (3): 375-383. DOI: 10.11676/qxxb2004.038

MESO-SCALE CHARACTERISTICS OF THE UNBALANCED FORCE OF ATMOSPHERIC MOTION AND ENVIRONMENTAL FIELDS OF RAIN STORM ON 20—21 JULY 1998

  • The conventional and satellite data were collected and sorted by the Research Project Group of Cause and Prediction Application of 1998 Yangtze River and Nunjian River heavy rain. Besides convent ional physical variables such as vorticity, divergence, vertical velocity θse to represent the basic characteristics of atmospheric motion, We calculated thermodynamic parameter CD which reflects the sloppy development of vert ical vort icity and the diagnostic variable U which reflects the unbalanced quality of mesoscale atmospheric motion and variability of vertical vorticity ∂ζ/∂t. Their calculation expressions are as follows: .
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