Collaborative Research: Gravity Current Entrainment Climate Process Team Renewal

摘要：本研究是气候过程研究小组（Climate Process Team）的一个试点项目的延续，旨在开发重力流携流的参数化，以便将其纳入海洋环流模式。我们的小组由最近参与溢流夹带实地研究的观测人员组成：（法罗湾海峡、南极陆架、红海溢流）；过程研究建模人员通过高分辨率非流体静力模拟检查夹带过程；牵引重力流简化模型的开发者；以及那些在海洋学机构和气候模拟中心使用各种大型模型架构的人。该项目最后两年的主要目标是(a)密切审查观察和过程研究的附带情况；(b)利用这些知识开发新的夹带参数化；(c)在海洋环流模式和耦合气候模式中实施和评价新的参数化。提出的活动的学术价值：重力流夹带是海洋气候环流的一个重要组成部分，这项研究将增强我们对这一过程及其在气候中的作用的理解。更广泛的影响：本研究将加强建模中心与学术机构之间的联系；提供新的参数化形式的具体产品，供整个气候模拟界使用。它将使对气候变化的预测更加可靠，并通过资助来自代表性不足群体的2名博士后和研究人员来促进跨学科培训，从而造福社会。研究结果将通过涉及更大社区的年度讲习班传播。该项目是对美国CLIVAR（气候变率和可预测性）计划的贡献。

ABSTRACTOCE-0611572This is a continuation of a pilot Climate Process Team to develop parameterizations of gravity current entrainment for inclusion in ocean general circulation models. Our team comprises observationalists involved in recent field studies of entrainment in overflows: (Faroe Bank Channel, Antarctic shelf, Red Sea Overflow); process study modelers examining entrainment processes with high resolution non-hydrostatic simulations; developers of simplified models of entraining gravity currents ; and those using a variety of large scale model architectures at oceanographic institutions and climate modeling centers. The main objective of the final two years fo the project are to (a) closely examine entrainment in observations and process studies; (b) use this knowledge to develop new parameterizations of entrainment; (c) implement and evaluate the new parameterizations in ocean general circulation models and coupled climate models. Intellectual merit of the proposed activity: Gravity current entrainment is an important component of the ocean climate circulation, and this study will enhance our understanding of this process and its role in the climate.Broader impacts: This study will enhance links between modeling centers and academic institutions; provide concrete products in the form of new parameterizations which can be used by the whole climate modeling community. It will benefit society by enabling more reliable predictions of climate variability and promote interdisciplinary training through funding of 2 postdocs and investigators from under-represented groups. The results of the research will be disseminated through annual workshops involving the larger community.This project is a contribution to the U.S. CLIVAR (CLImate VARiability and predictability) program.