Meridional Heat Flux and Thermal Anomalies in the North Atlantic Ocean: Diagnosis through Four-Dimensional Ocean Data Assimilation

9530220 纸箱 这个项目是一个贡献的建模组件是 作为大西洋环流和气候的一部分， 世界海洋环流实验（ACCE） （WOCE）。 重点将是升级现有的等密度模型， 数据同化，并整合不同类型的区域 模型 将不同的建模方法进行比较 以评估每一个的优点和缺点，并 确定纳入海洋变化的最佳总体方法 气候建模。 将特别注意 将ACCE实地阶段的数据纳入模型， 以及历史数据库。 在这个项目中， PI将使用数据同化技术来确定在季节到十年时间尺度上的上层海洋热量收支的支配平衡。 他们将把历史水文学和漂流物数据纳入GFDL模块海洋模式，以提供与ACCE观测有关的时间尺度的历史视角。 GEOSAT和TOPEX高度计数据，以及速度测量将被添加到以前的历史分析进行的PI。 还将对ACCE两年的数据进行更全面的分析，同时沿着对不确定性，特别是与海气通量有关的不确定性进行仔细的估计。

9530220 Carton This project is a contribution to the modeling component to be carried out as part of the Atlantic Circulation and Climate Experiment (ACCE) under the World Ocean Circulation Experiment (WOCE). The focus will be on upgrading existing isopycnal models, data assimilation, and integrating different types of regional models. Comparisons will be made among different modeling approaches in order to assess the strengths and weaknesses of each, and to determine the best overall approach for including ocean variability in climate modeling. Particular attention will be paid to assimilating, into the models, data from the field phase of ACCE, as well as from historical data bases. In this particular project, the PIs will use data assimilation techniques to determine the domination balances in the upper ocean heat budget on searonal to decadal time scales. They will assimilate historical hydrographic and drifter data into the GFDL Modular Ocean Model (MOM) to give historical perspective on the timescales related to the ACCE ecpseirment. GEOSAT and TOPEX altimeter data, as well as velocity measurements would be added to previous historical analyses caried out by the Pis. A completer analysis of the two years of ACCE data will also be carried out, along with careful estimates of uncertainties, especially those associated with air-sea fluxes.