民國66-67年重要環流與天氣現象討論

吳宗堯 王時鼎

中央氣象局

空軍氣象中心

ABSTRACT

　　Two subjects are discussed in this report. We first present the unusual warming in the mid-troposphere together with the occurrence of jet streams in the middle and lower troposphere and the intermediate seale waves right above surface layer of cold air in the south China and Taiwan, during January 16-22,1978. It is found that all these phenomena were mutually correlated, and occurred under the situation of the deep cold air outbreak. The second topic in this report is to compare the large-scale circulation pattern of the extremely dry March in 1977 and that of the extremely wet March in 1978 in Taiwan. It is found that the subtropical Pacific high was located to the south of Taiwan in the wet season and over Taiwan in the dry season. As a result, surface frontal waves and upper air disturbances in this region were found much more active in the wet season than in the dry season.