Simulation of oceanic volume transports through Fram Strait 1995-2005
Simulation of oceanic volume transports through Fram Strait 1995-2005
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DOI：
10.1007/s10236-010-0263-9
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发表时间：
2010-06-01
期刊：
影响因子：
2.3
通讯作者：
Schauer, Ursula
中科院分区：
文献类型：
--
作者：
Fieg, Kerstin;Gerdes, Ruediger;Schauer, Ursula
我们讨论了通过最气候相关的海洋通道之一，弗拉姆海峡的体积运输的模型表示。我们比较了不同分辨率（类似于1/12 A度和类似于1/4 A度）的海洋-海冰耦合模式的结果和沿沿着79 A度N的系泊阵列的测量结果。1/4A度模式提供了一个现实的平均气候状态和现实的净体积传输。然而，该模式未能再现所观察到的强正压环流，到达遥远的北部弗拉姆海峡。这种再循环在模型的更高分辨率版本中被捕获。东格陵兰大陆架上空的环流和弗拉姆海峡区域大西洋沃茨的温度以及地表热通量存在其他差异。我们发现，高分辨率的模式结果和长期测量相结合，可以提高测量和模拟过程的解释，并减少北极和北大西洋之间的汇率的不确定性。
We discuss the model representation of volume transports through one of the most climate-relevant ocean passages, the Fram Strait. We compare results from a coupled ocean-sea ice model with different resolutions (similar to 1/12A degrees and similar to 1/4A degrees) and measurements from a mooring array along 79A degrees N. The 1/4A degrees model delivers a realistic mean climate state and realistic net volume transports. However, this model fails to reproduce the observed intense barotropic recirculation that reaches far north in Fram Strait. This recirculation is captured in the higher resolution version of the model. Other differences exist in the circulation over the East Greenland Shelf and in the temperature of Atlantic waters in the Fram Strait region as well as in surface heat fluxes. We find that a combination of high-resolution model results and long-term measurements can improve the interpretation of measured and simulated processes and reduce the uncertainties in exchange rates between Arctic and the North Atlantic.