Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UK.
Philos Trans A Math Phys Eng Sci. 2008 Dec 28;366(1885):4529-41. doi: 10.1098/rsta.2008.0196.
Although the Antarctic Circumpolar Current (ACC) is the longest and the strongest oceanic current on the Earth and is the primary means of inter-basin exchange, it remains one of the most poorly represented components of global climate models. Accurately describing the circulation of the ACC is made difficult owing to the prominent role that mesoscale eddies and jets, oceanic equivalents of atmospheric storms and storm tracks, have in setting the density structure and transport properties of the current. The successes and limitations of different representations of eddy processes in models of the ACC are considered, with particular attention given to how the circulation responds to changes in wind forcing. The dynamics of energetic eddies and topographically steered jets may both temper and enhance the sensitivity of different aspects of the ACC's circulation to changes in climate.
虽然南极环极流（ACC）是地球上最长和最强的洋流，也是跨盆交换的主要方式，但它仍然是全球气候模型中表现最差的部分之一。由于中尺度涡流和射流（大气风暴和风暴轨迹的海洋等效物）在设定当前密度结构和输运特性方面的突出作用，准确描述 ACC 的环流变得非常困难。本文考虑了不同模型中涡流过程的不同表示方法的成功和局限性，特别关注环流对风强迫变化的响应。高能涡流和地形引导射流的动力学可能会缓和和增强 ACC 环流不同方面对气候变化的敏感性。
