SGER: Quantifying Upper Ocean Response to an Ensemble of Surface Wind Field Forcing During a Madden-Julian Oscillation

SGER：量化马登-朱利安振荡期间表面风场强迫集合的上层海洋响应

• 批准号: 0354637
• 负责人: Ralph Milliff
• 金额: $ 2.49万
• 依托单位: NorthWest Research Associates, Incorporated
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-11-15 至 2005-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0354637&HistoricalAwards=false
• 关键词: SGER; Quantifying; Upper; Ocean; Response

The PI will study the upper ocean response to surface wind forcing during a Madden-Julian Oscillation. He will use tropical surface wind data for the western Pacific and Indian Oceans to force several integrations of the Community Climate System Model (CCSM) ocean model component. This study is important for near-term improvements of the CCSM because the model is weak in simulating realistic intraseasonal variability in both the atmospheric and coupled atmosphere-ocean modes. In the coupled mode, modeled ocean annual average zonal velocities and temperature distributions in the equatorial western Pacific depart significantly from well-accepted ocean analyses in the region. The PI will examine the hypothesis that these coupled model deficiencies are related, that is, the surface winds associated with the MJO in the active convective regions of the Indian and western Pacific Oceans are not oscillations about a background state, but rather impulse forcings, often of opposite sign (i.e., westerly wind bursts) to the prevailing easterlies on the equator.If successful, this research will improve climate models and their predictions, which is a service to society.

PI将研究在Madden-Julian振荡期间上层海洋对表面风强迫的响应。 他将使用西太平洋和印度洋的热带表面风数据，强制社区气候系统模型（CCSM）海洋模型组件的几个集成。 这项研究是重要的短期改进的CCSM，因为该模式是弱的，在模拟现实的季节内变化的大气和耦合的大气-海洋模式。 在耦合模式中，模拟的赤道西太平洋海洋年平均纬向速度和温度分布显着偏离公认的海洋分析在该地区。 PI将检查这些耦合模式缺陷相关的假设，即与印度洋和西太平洋活跃对流区的MJO相关的表面风不是关于背景状态的振荡，而是脉冲强迫，通常具有相反的符号（即，如果成功，这项研究将改善气候模型及其预测，这是对社会的服务。