Recent warming in the Yellow/East China Sea during winter and the associated atmospheric circulation |
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| Authors: | Sang-Wook Yeh Cheol-Ho Kim |
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| Institution: | 1. Department of Environmental Marine Science, Hanyang University, Ansan, Republic of Korea;2. Korea Ocean Research and Development Institute, Ansan, Republic of Korea |
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| Abstract: | We examine characteristics in the variability of sea surface temperature (SST) in the Yellow/East China Sea during the boreal winter (December–January–February) for the period 1950–2008 in observations. It is found that the mean SST in the Yellow Sea/East China Sea gradually increases during recent decades. A warming trend of a basin scale SST is significant in most of the regions in the Yellow/East Sea, which is well explained by the variability of the first empirical orthogonal function SST mode. We suggest one candidate mechanism that the North Pacific oscillation (NPO)-like sea level pressure play an important role to warm the Yellow/East China Sea. Anomalous anticyclonic circulation, which is the southern lobe of NPO-like sea level pressure over the North Pacific, causes a weakening of northerly mean winds over the Yellow/East China Sea during winter. This contributes to increase in the SST in the Yellow/East China Sea through the changes in the latent heat and sensible heat fluxes. |
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| Keywords: | Yellow/East China Sea A warming trend NPO-like sea level pressure |
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