Multidecadal Variability in Mediterranean Sea Surface Temperature and Its Sources
Multidecadal Variability in Mediterranean Sea Surface Temperature and Its Sources
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DOI：
10.1029/2020gl091814
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发表时间：
2021-04
影响因子：
5.2
通讯作者：
Xiaoqin Yan;Youmin Tang
中科院分区：
文献类型：
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作者：
Xiaoqin Yan;Youmin Tang
地中海表面温度(MSMV)的年代际变化对地中海区域和偏远地区在半球尺度上都产生了重要的气候影响，这在以前的研究中早已得到确认。然而，其关键区域和来源仍不清楚。我们首次发现MSMV的关键区在地中海东部，在那里MSMV可以全年持续。地中海中部和西部的MSMV主要发生在夏季。北大西洋涛动(NAO)和大西洋年代际变率(AMV)指数的比较表明，累积的NAO指数与MSMV有较好的一致性，表明MSMV很可能是NAO大气强迫对地中海海洋环流的累积影响的结果。累积NAO指数与MSMV之间的稳定滞后关系为MSMV的年代际预报提供了一个自然指标。
The multidecadal variability in Mediterranean Sea surface temperature (MSMV) exerts important climate impacts on both the Mediterranean region and remote areas at hemispheric scales and has long been identified in previous studies. However, its key region and source are still unclear. For the first time, we show that the key region of the MSMV is in the eastern Mediterranean, where the MSMV can persist throughout the year. The MSMV in the central and western Mediterranean occurs mainly in summer. Comparison of the North Atlantic Oscillation (NAO) and Atlantic Multidecadal Variability (AMV) indices shows that the cumulative NAO index has a better consistency with the MSMV, suggesting that the MSMV most likely results from the cumulative effect of NAO atmospheric forcing on ocean circulation in the Mediterranean Sea. The stable lag relationship between the cumulative NAO index and the MSMV provides a natural indicator for the decadal prediction of the MSMV.