Collaborative Research: Interaction of Eddies with Mixed Layers

[06:12157]这个气候模式和过程小组的主要目标是在ipcc级别的气候模式中为地表边界层及其附近的涡旋输送制定和测试参数化。结合数据和非常高分辨率的数值模式研究了上层海洋的涡旋动力学。在此基础上，建立了非绝热面层中尺度涡旋输送的参数化方案和亚中尺度涡旋驱动的再化参数化方案，并在群落气候模式中得到了应用。它们对海洋的平均状态有很大的影响，特别是在接近海面的地方。这些变化很可能通过对海气交换的影响暗示了耦合模式中的气候敏感性。对耦合气候模式的一些影响将进行研究。具体来说，这次更新将完成以下方面的工作：完成了NCAR、GFDL和MIT海洋气候模式的新参数化实现，并研究了它们对海洋-大气耦合模式的影响。将模式输出与根据全球数据集估计的涡旋统计数据进行比较，并从今后三年内海洋实地活动获得的新数据中进行比较。完成了上层海洋中尺度-亚中尺度相互作用的过程研究，重点研究了复冰、风强迫和锋生的作用。修改新的参数化，以解释最近才被团队揭示的上层海洋物理的新方面。知识价值。我们对地球气候系统的认识在很大程度上取决于我们对物理过程的理解以及在数值模式中对这些过程的整合。该项目将继续在上层海洋物理学、改进气候模型的物理学以及了解气候对上层海洋过程的敏感性方面取得根本性进展。更广泛的影响。这项提议的研究有许多更广泛的含义。最明显的是，气候对人类状况有着巨大的影响，该项目直接关注于改善模拟和试图预测气候和气候变化的气候模型中的海洋部分。两名青年科学家和三名博士后（该领域最有前途的人才之一）将在气候研究和海洋建模领域接受培训。该小组还积极参加了一些外联活动和年度讲习班，以传播早期成果。在主要的科学会议上组织了关于涡流-混合层相互作用的特别会议，并创建了一个网站（http://cpt-emilie.org/）来宣传正在进行的研究和研讨会活动。该项目是对美国CLIVAR（气候变率和可预测性）计划的贡献。

0612157The main goal of on this Climate Modeling and Process team is to formulate and test in IPCC-class climate models parameterizations for the eddy transport in and near the surface boundary layer. A combination of data and very high resolution numerical models has been used to investigate eddy dynamics in the upper ocean. Using this body of work, a parameterization scheme for mesoscale eddy transport in the diabatic surface layer and a parameterization scheme for restratification driven by submesoscale eddies have been formulated and implemented in the community climate models. They show a large impact on the oceanic mean state, especially close to the surface. These modifications are likely to imply climate sensitivity in coupled models through the impact on air-sea exchange. Some of the implications for coupled climate models will be investigated. Specifically, this renewal will complete work in the following areas:. completing the implementation of the new parameterizations in the ocean climate models at NCAR, GFDL, and MIT and studying their impact in coupled ocean-atmosphere models, . comparing model outputs versus eddy statistics estimated from global data sets and from new data that will become available over the next three years from the oceanographic field campaigns,. completing the process studies of mesoscale-submesoscale interactions in the upper ocean with specialemphasis on the roles of restratification, wind forcing, and frontogenesis,. modifying the new parameterizations to account for new aspects of upper ocean physics only recently revealed by the team.Intellectual merit. Our knowledge of the Earth's climate system depends largely on our understandingof physical processes and integration of those processes in numerical models. The project will continuemaking fundamental progress in upper ocean physics, in improving physics in climate models, and inunderstanding the sensitivity of climate to upper ocean processes.Broader impacts. The proposed research has many broader implications. Most obviously, climate has an enormous impact on the human condition, and the project is directly focused on improving the ocean component of the climate models that simulate and attempt to predict climate and climate change. Two young scientists and three postdocs (among the most promising talents in the field) will be trained in the area of climate research and ocean modeling. The team has also been active in a number of outreach activities and meets for yearly workshops to disseminate early results. Special sessions on Eddy-Mixed Layer Interactions has been organized at major scientific meeting and a web-site (http://cpt-emilie.org/) was created to advertise the research under way and workshop activities.This project is a contribution to the U.S. CLIVAR (CLImate VARiability and predictability) program.