Decadal Variability of Subtropical Mode Water, Gulf Stream Separation and Large-Scale Atmospheric Fields in the N. Atlantic Ocean from 1954-1999

JOYCE/OCE-9818465上世纪90年代世界海洋环流实验(WOCE)期间的最新观测结果将用于扩展北大西洋环流的现有时间序列。目标是检查副热带模式水、墨西哥湾流位置和持续变化是否与大尺度大气热力和浮力强迫以及北大西洋涛动指数共同变化。需要检验的反馈假说是，湾流分离点受到拉布拉多海水向南输送的变化的影响，从而改变了风暴架和大气强迫，从而对拉布拉多海水生产产生了负面影响。

Joyce / OCE-9818465Recent observations for the World Ocean Circulation Experiment (WOCE)period, the 1990s, will be used to extend an existing time series of the NorthAtlantic Circulation. The goal is to examine if the Subtropical Mode water, theGulf Stream position and continue to co-vary with large scale atmospheric heatand buoyancy forcing and a North Atlantic Oscillation index. The feedbackhypothesis to be tested is that the Gulf Stream separation point is influenced byvariability of the southward transport of Labrador Sea Water which then alterstorm racks and atmospheric forcing so as to negatively damp Labrador SeaWater production.