VPW: Transport Fluctuations in the Eastern Part of the North Pacific Subtropical Gyre

VPW：北太平洋副热带环流东部的输运波动

• 批准号: 9627101
• 负责人: Kathryn Kelly
• 金额: $ 12.8万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-01 至 1998-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9627101&HistoricalAwards=false
• 关键词: VPW; Transport; Fluctuations; Eastern; Part

The research problem is to determine why transport in the region between Hawaii and the California coast deviates substantially from what would be expected from wind forcing alone (Sverdrup balance). Possible reasons are significant errors in the wind stress field, seasonal variations in the transport which are not resolved by the measurements, forcing by surface heat fluxes, or strong ocean fronts. Several of these mechanisms are being examined using new data available from earth-observing satellites, and comparisons with two quite different methods of analyzing ocean dynamics: hydrographic measurements and numerical modeling of ocean circulation. Satellite wind and sea surface height observations are being assimilated into a simple circulation model to separate the effects of Rossby waves, seasonal heating, and wind forcing. Interactive activities include teaching a graduate course on ocean data and models, a workshop on balancing career and family, and another workshop on careers in science education.

研究的问题是确定为什么夏威夷和加利福尼亚海岸之间的区域的运输与仅靠风的力量所预期的情况有很大的偏差（Sverdrup平衡）。可能的原因是风应力场的显著误差、测量不能解决的输送的季节变化、地表热通量的强迫或强海锋。目前正在利用地球观测卫星提供的新数据，并与两种完全不同的海洋动力学分析方法——水文测量和海洋环流数值模拟——进行比较，对其中若干机制进行研究。卫星的风和海面高度观测结果被同化成一个简单的环流模式，以分离罗斯比波、季节性加热和风强迫的影响。互动活动包括教授一门关于海洋数据和模型的研究生课程，一个关于平衡事业和家庭的讲习班，以及另一个关于科学教育事业的讲习班。