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

北大西洋经向热通量和热异常：通过四维海洋数据同化进行诊断

• 批准号: 9530220
• 负责人: James Carton
• 金额: $ 55万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-15 至 2002-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9530220&HistoricalAwards=false
• 关键词: Meridional; Heat; Flux; Thermal; Anomalies

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.

9530220 纸箱 该项目是对世界海洋环流实验 (WOCE) 下的大西洋环流和气候实验 (ACCE) 的一部分的建模组件的贡献。 重点将是升级现有的等重模型、数据同化以及整合不同类型的区域模型。 将比较不同的建模方法，以评估每种方法的优缺点，并确定将海洋变化纳入气候建模的最佳总体方法。 将特别注意将 ACCE 现场阶段的数据以及历史数据库的数据吸收到模型中。 在这个特定的项目中，PI将使用数据同化技术来确定每年到十年时间尺度上层海洋热量收支的支配平衡。 他们将把历史水文和漂流数据吸收到 GFDL 模块化海洋模型 (MOM) 中，以提供与 ACCE ecpseirment 相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结果将添加到 Pis 之前进行的历史分析中。 还将对两年的 ACCE 数据进行更完整的分析，并对不确定性进行仔细估计，特别是与海气通量相关的不确定性。