북서태평양의 열대 저기압 발생 빈도와 열대 태평양 표층 수온의 상관성

Title
북서태평양의 열대 저기압 발생 빈도와 열대 태평양 표층 수온의 상관성
Alternative Title
On the relationship between weastern North Pacific tropical cyclone frequency and the tropical Pacific SST
Author(s)
예상욱; 강석구; 권민호; 김철호
KIOST Author(s)
Kang, Sok Kuh(강석구)
Alternative Author(s)
예상욱; 강석구; 김철호
Publication Year
2009-04-28
Abstract
In this study we examine the relationship between the number of tropical cyclones (TCs) in the western North Pacific and the tropical Pacific sea surface temperature (SST) during the main TC season (July-August-September-October-November) for the period of 1965-2006. Results show that there are periods when TC frequency and the tropical Pacific SST are well correlated and periods when the relationship breaks down. Therefore, decadal variation is readily apparent in the relationship between the TC frequency and the SST variations in the tropical Pacific. We further examine the oceanic and atmospheric states in the two periods (i.e., 1979-1989 versus 1990-2000) when marked contrast in the correlation between the TC frequency and the tropical Pacific SST is observed. The analysis indicates that before 1990 oceanic conditions largely influenced anomalous TC frequency, whereas atmospheric conditions had little impact. After 1990, there the reverse appears to be the case, i.e., atmospheric conditions drive anomalous TC frequency and oceanic conditions are relatively unimportant. A role of atmosphere and ocean in relation to the TC development in the western North Pacific changes, which is consistent with change of the correlations between the TC frequency and the tropical Pacific SST.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/29544
Bibliographic Citation
International Workshop on Tropical Cyclone-Ocean Interaction in the Northwest Pacific, pp.41, 2009
Publisher
한국해양연구원
Type
Conference
Language
English
Publisher
한국해양연구원
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