Circulation and Variability in the Mid-Latitude N. Atlantic Ocean

0219644提供JoyceFunding，用于首席调查员对北大西洋长期变化的研究继续进行两年，作为一项以成绩为基础的更新。这一研究项目建立在世界海洋环流实验(WOCE)的成功实地方案的基础上，并分析了该区域大部分巡航数据和其他与年代际变化有关的数据。将研究的具体问题是：(1)利用现场资料和52W水文剖面的反演法继续研究纬向环流；(2)了解副热带涡旋次年际能量的性质和来源，这种能量似乎在百慕大长时间序列和高度计中都是年际能量的主导；(3)探讨科德角以南坡水地区海温异常强烈持续的原因；并将替代数据的使用延伸到19世纪，以研究冬季气候变化，以了解对北大西洋涛动(NAO)敏感的长期周期。

0219644 JoyceFunding is provided for a two year continuation of the principal investigator's studies on the long-term variability of the North Atlantic as an Accomplishment Based Renewal. This research project builds on the successful field program of the World Ocean Circulation Experiment (WOCE), and the analysis of most of the cruise data and other data relating to decadal variability in the region. The specific topics that will be investigated are: (1) continued studies of zonal circulation using in-situ data and inverse methods for the 52W hydrographic section; (2) understanding of the nature and source of sub-annual energy in the subtropical gyre, which seems to dominate inter-annual energy both in the long Bermuda time series and for the altimeter; (3) investigation of the reason for strong persistence of SST anomalies in the region of the Slope Water south of Cape Cod; and extending the use of proxy data for the study of wintertime climate variability extending back into the 19th century to understand long-term cycles in sensitivity to the North Atlantic Oscillation (NAO).