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

基本信息

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

项目摘要

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纸箱这个项目是对在世界海洋循环实验（WOCE）下作为大西洋循环和气候实验（ACCE）的一部分进行的建模组件的贡献。重点将放在升级现有的等法模型，数据同化以及整合不同类型的区域模型。将在不同的建模方法中进行比较，以评估每种建模的优势和劣势，并确定在气候建模中包括海洋变异性的最佳总体方法。将特别注意将ACCE现场阶段以及历史数据基础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Searonal上海热预算中的支配平衡，从而确定衰老时间尺度。他们将把历史水文和漂流者数据吸收到GFDL模块化海洋模型（MOM）中，以对与ACCE ecpseirment相关的时间表进行历史观点。 GEOSAT和TOPEX高度计数据以及速度测量将添加到PIS鉴定的先前历史分析中。还将对两年的ACCE数据进行完整分析，以及对不确定性的仔细估计，尤其是与空气通量相关的不确定性。