Effects of Southern Hemisphere Wind Changes on the Meridional Overturning Circulation in Ocean Models

被引：72

作者：

Gent, Peter R. ^{[1
]}

机构：

[1] Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA

来源：

ANNUAL REVIEW OF MARINE SCIENCE, VOL 8 | 2016年 / 8卷

关键词：

Southern Ocean; eddy compensation; Atlantic Ocean; ANTARCTIC CIRCUMPOLAR CURRENT; MESOSCALE EDDIES; AGULHAS LEAKAGE; CLIMATE-CHANGE; THERMOHALINE CIRCULATION; GLOBAL CONVEYOR; ANNULAR MODE; ATLANTIC; STRATIFICATION; STRESS;

D O I：

10.1146/annurev-marine-122414-033929

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Observations show that the Southern Hemisphere zonal wind stress maximum has increased significantly over the past 30 years. Eddy-resolving ocean models show that the resulting increase in the Southern Ocean mean flow meridional overturning circulation (MOC) is partially compensated by an increase in the eddy MOC. This effect can be reproduced in the non-eddy-resolving ocean component of a climate model, providing the eddy parameterization coefficient is variable and not a constant. If the coefficient is a constant, then the Southern Ocean mean MOC change is balanced by an unrealistically large change in the Atlantic Ocean MOC. Southern Ocean eddy compensation means that Southern Hemisphere winds cannot be the dominant mechanism driving midlatitude North Atlantic MOC variability.

引用

页码：79 / 94

页数：16

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