Title

1979年東亞梅雨期中低緯度大氣垂直模之結構與能量之研究

Translated Titles

A Study on the Atmospheric Vertical Structure and Its Energy in Low and Mid-Latitudes during the East Asia Mei-Yu Period in 1979

Authors

李汴軍(Beng-Chun Lee)

Key Words

梅雨期 ; 垂直模能量 ; Mei-Yi period ; Vertical mode energy

PublicationName

大氣科學

Volume or Term/Year and Month of Publication

22卷3期(1994 / 09 / 01)

Page #

417 - 430

Content Language

繁體中文

Chinese Abstract

分析1979年5月和6月從30°E~150°E,0°~60°N範圍內歐洲中期天氣預報中心(ECMWF)III-b三度空間觀測資料之垂直結構,其結果顯示中緯度地區大氣垂直溫度變化較明顯,此現象與東亞梅雨期入梅、出梅前後相吻合。能量百分比顯示,熱帶地區80%能量集中在前四個垂直模內,第一垂直模能量有30天週期趨勢,中緯度地區能量變化有15天週期傾向,副熱帶地區則呈現為過渡地區。熱帶地區以位能為主,副熱帶地區、中緯度地區在第一垂直模以位能居多,動能則在內部模為主要能量。

English Abstract

This paper is to study the vertical energetic characteristics based on the ECMWF III-b data over 30°E ~ 150°E, 0 ~ 60°N during May and June, 1979. Firstly, the time variations of the vertical temperature profile in mid-latitudes are significantly observed. The major time change is close to that of the onset and recess of the East Asia Mei-Yu seasons. Secondly, Most of the 80 energy stored in the first four vertical modes is dominant over the tropics. The calculated energy shows there are a 30 day period variations for the first vertical mode in the tropics and 15 day period oscillations revealed in internal and first modes of the mid-latitudes. Besides, it appears seemingly a transient belt in the subtropic regions.Potential energy is dominant in the tropics, in the first vertial mode of the subtropics and mid-latitudes. However kinetic energy is most important over the internal modes in the subtropics and mid-latitudes.

Topic Category 基礎與應用科學 > 大氣科學