Water Mass Transformation in the Greenland Sea during the Period 1986-2016
Water Mass Transformation in the Greenland Sea during the Period 1986-2016
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DOI：
10.1175/jpo-d-17-0273.1
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发表时间：
2019-01-01
影响因子：
3.5
通讯作者：
Moore, G. W. K.
中科院分区：
文献类型：
--
作者：
Brakstad, Ailin;Vage, Kjetil;Moore, G. W. K.
利用1986-2016年期间船舶、自主剖面浮标和仪器密封的水文测量数据，研究了格陵兰海冬季公海对流的时间变化。这一过程为深海补充了氧气，是维持其温盐性的关键。格陵兰海最深和最密集的混合层位于其气旋环流内，并表现出较大的年际变化。从1994年冬季开始，发生了向更深（约500米）混合层的过渡。这导致了一种新的、密度较低的中间水的形成，这种水后来成为格陵兰海对流的主要产物。在之前的冬季，对流只限于
Hydrographic measurements from ships, autonomous profiling floats, and instrumented seals over the period 1986-2016 are used to examine the temporal variability in open-ocean convection in the Greenland Sea during winter. This process replenishes the deep ocean with oxygen and is central to maintaining its thermohaline properties. The deepest and densest mixed layers in the Greenland Sea were located within its cyclonic gyre and exhibited large interannual variability. Beginning in winter 1994, a transition to deeper (>500 m) mixed layers took place. This resulted in the formation of a new, less dense class of intermediate water that has since become the main product of convection in the Greenland Sea. In the preceding winters, convection was limited to