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http://dx.doi.org/10.7837/kosomes.2019.25.3.328

High Frequency Variation of Low Water Temperature due to Arctic Oscillation Around the Western and Southern Coast of Korea During Winter 2017/2018  

Han, In-Seong (Ocean Climate and Ecology Research Division, National Institute of Fisheries Science)
Lee, Joon-Soo (Ocean Climate and Ecology Research Division, National Institute of Fisheries Science)
Kim, Ju-Yeon (Ocean Climate and Ecology Research Division, National Institute of Fisheries Science)
Hong, Ji-Yeon (Ocean Climate and Ecology Research Division, National Institute of Fisheries Science)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.25, no.3, 2019 , pp. 328-333 More about this Journal
Abstract
During the winter of 2017/2018, significantly low water temperatures were detected around the western and southern coasts of Korea (WSCK). In this period, sea surface temperature (SST) in the Korea Waters was about $2^{\circ}C$ lower than mean temperature. Using the real-time observation system, we analyzed the temporal variation of SST during this period around the western and southern coasts. Low water temperature usually manifested over a period of about 10 ~ 20 days. The daily Arctic oscillation index was also similarly detectable with the variation of SST. From the cross-correlation function, we compared two periodic variations, which were SST around the WSCK and the Arctic oscillation index. The cross correlation coefficients between both variations were approximately 0.3 ~ 0.4. The time lag of the two time series was about 6 to 7 days. Therefore, significantly low water temperatures during winter in the Korean coastal areas usually became detectable 6 to 7 days after the negative peak of Arctic oscillation.
Keywords
Arctic Oscillation; Climate change; Low water temperature; Cold surge; Cross correlation;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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