The the North Atlantic Meridional Overturning Circu-

• Main Authors: Gao Yong-qi, Yu Lei, Sci Lett
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2008
• Subjects: Subpolar Gyre Index; North Atlantic Merid- ional Overturning Circulation; indicator; Labrador Sea; North Atlantic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.538.3912; http://nzc.iap.ac.cn/uploadpdf/AOSL2008.pdf

the analysis of sea surface height (SSH), is proposed to be a potential indicator for the North Atlantic Meridional Overturning Circulation (AMOC) based on observation as well as the Ocean General Circulation Model (OGCM). We investigated the correspondence between the SPG and the AMOC in a coupled climate model. Our results con-firm that the SPG can be used as an early indicator for the AMOC in the subtropical North Atlantic. Changes in the SPG are closely related to variations in the air-sea heat exchange in the Labrador Sea, and variations in deep wa-ter formation and southward dense water transport are closely related to the deep western boundary current (DWBC) in the North Atlantic.