Role of Ocean Mesoscale Eddy Atmosphere Feedback in North Pacific and Atlantic Climate Variability: A High-Resolution Regional Climate Model Study

这项研究将为北太平洋和大西洋耦合气候系统的可预测性和可预测动力学提供新的见解。从这项研究中获得的知识将为黑潮和墨西哥湾流锋面的气候模型偏差的原因提供新的线索。该项目将资助一名研究生和一名博士后，并为参与该项目的青年科学家提供宝贵的职业发展机会。本研究的目的是利用网格分辨率接近分辨对流（~3 km）的最先进的耦合区域气候模式（CRCM）对海洋中尺度涡旋-大气（OMEA）反馈进行全面和定量的模拟分析。建模分析将通过对最近在北太平洋和大西洋的CLIvar支持的现场项目（如Kuroshio扩展系统研究（KESS）和CLIvar模式水动力实验（CLIMODE））以及高分辨率再分析和遥感卫星数据集产生的现场测量结果的深入分析来补充和验证。海洋涡旋在北太平洋和大西洋气候变率中的作用将通过验证以下科学假设来检验：1)沿黑潮和墨西哥湾流的高能海洋涡旋可能通过对湿斜压不稳定性的影响对北太平洋和大西洋风暴路径和天气模式产生显著的远程影响；2)在黑潮和墨西哥湾流锋的维持中，欧米加反馈是基本的。

This research will provide new insight into the predictability and predictable dynamics of coupled climate systems in the North Pacific and Atlantic. The knowledge gained from this research will shed new light on causes of climate model biases along the Kuroshio and Gulf Stream fronts. The project will support one graduate student and one postdoc, and provide valuable professional development for the young scientists involved in the program.The goal of this study is to conduct a comprehensive and quantitative modeling analysis on ocean mesoscale eddy-atmosphere (OMEA) feedback using a state-of-the-art coupled regional climate model (CRCM) with grid resolution of approaching resolved convection (~3 km). The modeling analysis will be complemented and validated by an in-depth analysis of in situ field measurements generated by recent CLIVAR-endorsed field programs in the North Pacific and Atlantic, such as Kuroshio Extension System Study (KESS) and CLIvar MOde water Dynamic Experiment (CLIMODE), as well as high resolution reanalysis and remote sensed satellite data sets.The role of ocean eddies role in North Pacific and Atlantic climate variability will be examined by testing the following scientific hypotheses: 1) Energetic ocean eddies along the Kuroshio and Gulf Stream can exert significant remote influence on North Pacific and Atlantic storm tracks and weather patterns possibly through their effects on moist baroclinic instability; 2) OMEA feedback is fundamental in the maintenance of the Kuroshio and Gulf Stream fronts.