Ko-Kung Chu  Sue-Li Chuang

Abstract

Typhoon center fixed data executed by Joint Typhoon Warnning Center over 4-yea period (1971-1974) and the rawinsonde data in Taiwan of 7 typhoons in 1972 and 1973 were used to analyze some of the charateristics of typhoon. Typhoon eyes, wall cloud, maximum winds, wind speed shears, moisture contents and equivalent potential temperatures were preliminarily studied and the relations between them also were selectively analyzed.

Large differences were found between individual typhoons and all the characteristics which were analyzed in this paper changed very much frequently with respect to both time and space. Generalized typhoon characteristic of typhoon statistically from already known terms.

The best relationship which we have found was between 700mb minimum height, 700mb temperature in the eye and the urface minimum pressure. It was very close to the hydrostatic equilibrium.The vertical wind speed shear affected by the Central Mountain range in Taiwan were found that surface to 700mb there was anticyclonic and 700mb to 500mb,cyclioic.This interesting phenomenon would disappear when the surface gale wind increased as the typhoon center was very close to Taiwan.