Pacific Decadal Oscillation 변동에 관한 연구

Title
Pacific Decadal Oscillation 변동에 관한 연구
Alternative Title
Change in a Pacific Decadal Oscillation in observations
Author(s)
예상욱; 박영규; 민홍식; 김철호; 이재학
KIOST Author(s)
Park, Young Gyu(박영규)Lee, Jae Hak(이재학)
Publication Year
2008-10-28
Abstract
A long-term time series of the North Pacific mean sea surface temperature (SST) is characterized by two distinct epochs in observations, i.e., the cold epoch (1870-1935) versus the warm epoch (1945-2007). By directly comparing the Pacific Decadal Oscillation (PDO) between the two epochs we examine characteristic change in the PDO in relation to change in the mean SST in the North Pacific. While the spatial structure of the PDO is little changed from the cold epoch to the warm epoch, the temporal structure of the PDO is significantly changed between the two epochs. During the last half of the 20th (i.e., warm epoch), the period when one phase of the PDO persists becomes longer and low frequency variability in the PDO is dominant compared to the cold epoch. We argue that such change in the PDO is closely associated with changes in the PDO-ENSO relationship from the warm epoch to the cold epoch.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/29777
Bibliographic Citation
PICES 17th Annual Meeting, pp.98, 2008
Publisher
North Pacific Marine Science Organization
Type
Conference
Language
English
Publisher
North Pacific Marine Science Organization
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