A Theory of the Interhemispheric Meridional Overturning Circulation and Associated Stratification
A Theory of the Interhemispheric Meridional Overturning Circulation and Associated Stratification
复制标题
半球间经向翻转环流及相关分层理论
DOI：
10.1175/jpo-d-11-0189.1
复制
发表时间：
2012
影响因子：
3.5
通讯作者：
G. Vallis
中科院分区：
文献类型：
--
作者：
M. Nikurashin;G. Vallis
本文提出了一个具有绕极通道的半球间单海盆海洋中纬向翻转环流及其相关的深层层结的定量理论模式。该理论包括风，涡，和diapycnal混合的影响，并预测深层结和翻转流函数的表面强迫和其他参数的问题。它依赖于三个区域之间的匹配：南高纬度的环极通道，北方高纬度的等密度露头区域，以及它们之间的海洋盆地。该理论描述了代表北大西洋深层水和南极底层水的环流的中层和深海单元。这表明，虽然中层翻转细胞的强度主要是由风应力在环极通道，中层分层的结果之间的平衡，风驱动的上升流在高北方纬度的通道和深水形成。D...
AbstractA quantitative theoretical model of the meridional overturning circulation and associated deep stratification in an interhemispheric, single-basin ocean with a circumpolar channel is presented. The theory includes the effects of wind, eddies, and diapycnal mixing and predicts the deep stratification and overturning streamfunction in terms of the surface forcing and other parameters of the problem. It relies on a matching among three regions: the circumpolar channel at high southern latitudes, a region of isopycnal outcrop at high northern latitudes, and the ocean basin between.The theory describes both the middepth and abyssal cells of a circulation representing North Atlantic Deep Water and Antarctic Bottom Water. It suggests that, although the strength of the middepth overturning cell is primarily set by the wind stress in the circumpolar channel, middepth stratification results from a balance between the wind-driven upwelling in the channel and deep-water formation at high northern latitudes. D...