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

该项目将研究麦登-朱利安涛动期间海洋上层对地面风强迫的响应。他将利用西太平洋和印度洋的热带地面风数据，迫使共同体气候系统模式（CCSM）海洋模式组成部分进行若干整合。该研究对CCSM的近期改进具有重要意义，因为该模式在模拟大气和大气-海洋耦合模态的真实季节内变率方面都很弱。在耦合模式下，赤道西太平洋模拟的海洋年平均纬向速度和温度分布与该地区普遍接受的海洋分析有很大差异。PI将检验这些耦合模式缺陷相关的假设，也就是说，在印度洋和西太平洋活跃的对流区域，与MJO相关的地面风不是关于背景状态的振荡，而是冲激强迫，通常与赤道盛行的东风相反（即西风爆发）。如果成功，这项研究将改进气候模型及其预测，这是对社会的一种服务。

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.