Gradually Cooling of the Yellow Sea Warm Current Driven by Tropical Pacific Subsurface Water Temperature Changes Over the Past 5 kyr
Gradually Cooling of the Yellow Sea Warm Current Driven by Tropical Pacific Subsurface Water Temperature Changes Over the Past 5 kyr
复制标题
近5年来热带太平洋地下水温变化驱动黄海暖流逐渐变冷
DOI：
10.1029/2021gl093534
复制
发表时间：
2021-05-28
影响因子：
5.2
通讯作者：
Zhao, Meixun
中科院分区：
文献类型：
--
作者：
Li, Da-Wei;Yu, Meng;Zhao, Meixun
海洋-大气动力学对西北太平洋边缘海温度演变的综合影响一直是个谜。为了研究南黄海温度变化的控制机制，利用记录冬季黄海暖流温度信号的TEX 86 L指数重建了8.8 kyr以来南黄海底层水温的变化。我们的研究结果揭示了一系列突然的数百年到千年尺度的BWT变化（类似于1摄氏度），叠加在一个渐进的长期冷却（>3摄氏度）的趋势，从类似的5 ka到现在。在西太平洋暖池（WPWP），YS BWT的变化与次表层水温的变化呈正相关。西太平洋暖池次表层水冷却信号最有可能是由黑潮海流传输到YS南部的，突出了全新世期间WPWP在影响热带外地区热力学方面的作用。
The integrated effects of ocean-atmosphere dynamics on the temperature evolution in the western North Pacific marginal seas have remained elusive. In order to study mechanisms controlling southern Yellow Sea (YS) temperature changes, bottom water temperature (BWT) changes were reconstructed for the last 8.8 kyr by using the TEX86L index, which archives temperature signal of the winter season Yellow Sea Warm Current. Our results reveal a series of abrupt multi-centennial to millennial scale BWT changes (similar to 1 degrees C), superimposed on a gradual long-term cooling (>3 degrees C) trend starting from similar to 5 ka to the present. The YS BWT changes are positively correlated with subsurface water temperature changes in the Western Pacific Warm Pool (WPWP). The Western Pacific Warm Pool subsurface water cooling signal was most likely transmitted by the Kuroshio Current into the southern YS, highlighting the role of WPWP in influencing thermodynamics of the extratropical regions during the Holocene.