Collaborative Research: Development of A High-Resolution, Unstructured Grid, Finite-Volume Coupled Ice-Ocean Model for the Arctic Ocean

合作研究：开发北冰洋高分辨率、非结构化网格、有限体积耦合冰海模型

• 批准号: 0712903
• 负责人: Changsheng Chen
• 金额: $ 21.42万
• 依托单位: University of Massachusetts, Dartmouth
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0712903&HistoricalAwards=false
• 关键词: Collaborative; Research; Development; Resolution; Unstructured

Arctic Ocean Model Intercomparison Project (AOMIP) studies recommend two key model improvements for Arctic Ocean research: 1) increase model horizontal and vertical grid resolution and 2) include tidal motions in the model dynamics to provide physically-based mixing rates that vary both horizontally and vertically depending on tidal currents and ice-tide interactions. This effort seeks to complete the development and evaluation of a new high-resolution unstructured-grid, finite-volume coupled ice-ocean model for the Arctic Ocean (AO-FVCOM) and use this model to investigate the influences of coastline fitting, steep bathymetry, tides and tidal processes, surface wind stress, heat flux, atmospheric loading, coastal freshwater forcing, ice dynamics, and boundary forcing on Arctic Ocean circulation and water mass/sea ice distributions and variability. Both AO-FVCOM hindcast experiments following AOMIP specifications and process-oriented experiments are planned. These simulations will quantify the impacts of coastal geometry and bathymetry resolution on circulation and freshwater transport in the complex Canadian Archipelago and other coastal seas and the exchange processes between the Archipelago, Arctic basins, and the North Atlantic, plus provide new insight into the nonlinear interactions between ocean circulation, atmospheric forcing, sea ice, tides, and time-dependent river discharge and Bering Strait inflow and their different influences on Arctic Ocean oceanography. AO-FVCOM will be an open community model system available through the project website.This project will provide a new high-resolution unstructured-grid, finite volume Arctic Ocean model (AO-FVCOM) for use in regional and global ocean circulation and climate change studies. AO-FVCOM is significantly different from existing Arctic Ocean structured-grid models due to the geometric flexibility inherent in the unstructured-grid approach and the local mass, momentum, heat, and salt conservation and computational efficiency inherent in the finite-volume approach. AO-FVCOM hindcasts using AOMIP forcing and analysis methods will help evaluate AO-FVCOM for long-term ocean and climate change studies, while the AO-FVCOM process-oriented experiments will advance our understanding of the nonlinear interactions between tides, sea ice, wind stress, heat flux, atmospheric loading, and time dependent river discharge and boundary inflow on ocean circulation, water structure and sea ice in the Arctic Ocean. AO-FVCOM development and model experiments will provide an exciting new tool to study the linkages between Arctic and North Atlantic Oceans (especially through the Canadian Archipelago) and allow direct numerical simulation of the high-latitude buoyancy driven coastal boundary current that drives the shelf and upper slope circulation from Labrador south to Cape Hatteras.

北极海洋模型比较项目（AOMIP）研究建议北极海洋研究的两个关键模型改进：1）增加模型水平和垂直网格分辨率，2）在模型动力学中包括潮汐运动，以提供基于物理的混合速率，这些混合速率均与潮流和冰潮流相互作用，以水平和垂直的方式变化。 This effort seeks to complete the development and evaluation of a new high-resolution unstructured-grid, finite-volume coupled ice-ocean model for the Arctic Ocean (AO-FVCOM) and use this model to investigate the influences of coastline fitting, steep bathymetry, tides and tidal processes, surface wind stress, heat flux, atmospheric loading, coastal freshwater forcing, ice dynamics, and boundary forcing on Arctic Ocean circulation水质量/海冰分布和可变性。遵循AOMIP规范和面向过程实验的AO-FVCOM后广播实验。这些模拟将量化加拿大群岛和其他沿海海洋中沿海几何形状和测深的分辨率对流通和淡水运输的影响在北极海洋学上。 AO-FVCOM将是通过项目网站获得的开放社区模型系统。该项目将提供新的高分辨率非结构性网格，有限的北极海洋模型（AO-FVCOM），用于区域和全球海洋循环和气候变化研究。 AO-FVCOM与现有的北极海洋结构网格模型有显着不同，因为非结构化网格方法固有的几何柔韧性以及局部质量，动量，热量，盐保护和计算效率以及有限体积方法固有的计算效率。 AO-FVCOM hindcasts using AOMIP forcing and analysis methods will help evaluate AO-FVCOM for long-term ocean and climate change studies, while the AO-FVCOM process-oriented experiments will advance our understanding of the nonlinear interactions between tides, sea ice, wind stress, heat flux, atmospheric loading, and time dependent river discharge and boundary inflow on ocean circulation, water structure and sea ice in the Arctic Ocean. AO-FVCOM的开发和模型实验将为研究北极和北大西洋（尤其是通过加拿大群岛）之间的联系提供一个令人兴奋的新工具，并允许直接对高纬度浮力驱动的沿海边界电流进行直接数值模拟，从而使架构和上坡从Labrador South到Cape Hatteras驱动货架和上坡循环。