影響台灣地區八個梅雨系統平均結構之初步分析

A Preliminary Analysis on the Mean Structure of 8 Cases of Mei-Yu System

陳泰然(George Tai-Jen Chen)

《大氣科學》 8卷1期 (1981/05) Pp. 43-52

摘要

本文選取1975年與1977年影響台灣地區之8個梅雨個案，包括梅雨前半期（5月15～31日）與後半期（6月1～15日）各4個個案。每個個案均包括梅雨系統生命史之初期、中期與末期。分析這8個個案之平均結構，結果顯示東亞地區之氣壓、環流、雲量與積雨雲量之強度與分布在梅雨前半期與後半期有顯著不同，在生命史各階段亦有顯著差異。台灣地區降水量、雲量與積雨雲量亦經分析。這些顯著特徵均以圖表示。

並列摘要

Eight cases of Mei-Yu system affecting Taiwan area in 1975 and 1977 are chosen for the present study. There are four cases in former Mei-Yu period (May 15-31) and four cases in latter period (June 1-15). Each case of Mei-Yu system go through a complete cycle of initial-, middle-, and ending-stage. Results of the mean structure show that there are significant differences in distribution and intensity of pressure, circulation, cloud, and cumulonimbus amount between the former and the latter Mei-Yu periods and among different stages of life cycle. Analyses of rainfall, cloud, and cumulonimbus amount over Taiwan are also carried out. Significant features are all presented on charts.