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态提供新的见解。从这项研究中获得的知识将揭示气候模式偏差的原因沿着黑潮和墨西哥湾流锋。该项目将资助一名研究生和一名博士后，并为参与该项目的年轻科学家提供有价值的专业发展机会。本研究的目标是利用一个网格分辨率为近分辨对流（~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。模拟分析将通过对北太平洋和大西洋最近CLIVAR认可的实地项目（如黑潮扩展系统研究（KESS）和CLIvar MOde水动力实验（CLIMODE））产生的现场测量结果进行深入分析来补充和验证，以及高分辨率再分析和遥感卫星数据集。海洋涡旋在北太平洋和大西洋气候中的作用通过检验以下科学假设，将检验海洋环流的变化：1）沿着黑潮和墨西哥湾流的高能海洋涡旋可能通过其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重大的远程影响; 2）OMEA反馈对黑潮和墨西哥湾流锋的维持至关重要。

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.