Arctic pathways of Pacific Water: Arctic Ocean Model Intercomparison experiments.
Arctic pathways of Pacific Water: Arctic Ocean Model Intercomparison experiments.
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DOI：
10.1002/2015jc011299
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发表时间：
2016-01
影响因子：
3.6
通讯作者：
Nurser, A. J. George
中科院分区：
文献类型：
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作者：
Aksenov, Yevgeny;Karcher, Michael;Proshutinsky, Andrey;Gerdes, Ruediger;de Cuevas, Beverly;Golubeva, Elena;Kauker, Frank;Nguyen, An T.;Platov, Gennady A.;Wadley, Martin;Watanabe, Eiji;Coward, Andrew C.;Nurser, A. J. George
太平洋水(PW)通过白令海峡进入北冰洋，从白令海北部带来热量、淡水和营养物质。由于缺乏观测，人们对北冰洋中部的PW环流只有部分了解。本文利用6个最新的区域和全球海洋环流模式(OGCM)进行了数值模拟，研究了PW路径。在模拟中，PW通过在白令海峡发布的被动跟踪器进行跟踪。模拟的PW从白令海峡地区传播到三个主要分支。其中一次从巴罗峡谷开始，将PW沿着阿拉斯加的大陆斜坡带入加拿大海峡，然后进入巴芬湾。第二次从先驱峡谷附近开始，沿着东西伯利亚海的大陆斜坡输送PW进入跨极漂移，然后经过弗拉姆海峡和格陵兰海。第三条支流始于先驱者浅滩和楚科奇中央陆架附近，将PW带入波弗特湾。在模型中，风通过埃克曼抽水作用，推动了北冰洋加拿大盆地PW的季节和年际变化。风通过改变加拿大盆地洋流相对涡度的垂直切变来影响模拟的PW路径。在海洋模式中研究了北极太平洋水的路径。研究了太平洋水的风变率。提出了太平洋水变率的机制。
Pacific Water (PW) enters the Arctic Ocean through Bering Strait and brings in heat, fresh water, and nutrients from the northern Bering Sea. The circulation of PW in the central Arctic Ocean is only partially understood due to the lack of observations. In this paper, pathways of PW are investigated using simulations with six state‐of‐the art regional and global Ocean General Circulation Models (OGCMs). In the simulations, PW is tracked by a passive tracer, released in Bering Strait. Simulated PW spreads from the Bering Strait region in three major branches. One of them starts in the Barrow Canyon, bringing PW along the continental slope of Alaska into the Canadian Straits and then into Baffin Bay. The second begins in the vicinity of the Herald Canyon and transports PW along the continental slope of the East Siberian Sea into the Transpolar Drift, and then through Fram Strait and the Greenland Sea. The third branch begins near the Herald Shoal and the central Chukchi shelf and brings PW into the Beaufort Gyre. In the models, the wind, acting via Ekman pumping, drives the seasonal and interannual variability of PW in the Canadian Basin of the Arctic Ocean. The wind affects the simulated PW pathways by changing the vertical shear of the relative vorticity of the ocean flow in the Canada Basin. Pathways of the Arctic Pacific Water are investigated in ocean models Variability of the Pacific Water due to wind is examined Mechanisms of the Pacific Water variability are suggested