Collaborative Research: The Role of Ice-Ocean Exchange in Ice-Albedo Feedback

本研究将利用SHEBA数据和一系列冰-海模型（从简单湍流尺度到大涡模拟）来检验和量化冰-海热交换对冰-反照率反馈机制的影响。将研究冰下粗糙度对热的垂直湍流通量、铅中发现的开放水域条件和夏季融水分层的影响。将开发10-100公里面积尺度上这种热交换的改进参数化，以便用于大尺度区域和全球模式。然后，这些参数化将在这些更大规模的模型中进行测试。研究结果将提高全球海洋气候模式的预报能力。

This research will examine and quantify the impact of ice-ocean heat exchange on the ice-albedo feedback mechanism using SHEBA data and a hierarchy of ice-ocean models ranging from simple turbulence scaling to large eddy simulations. The role of under-ice roughness altering the vertical turbulent fluxes of heat, of open water conditions found in leads, and of summer-time melt-water stratification in would be investigated. Improved parameterizations for this heat exchange over area scales of 10-100 km would be developed for use in large scale regional and global models. These parameterizations would then be tested in these larger scale models. The results will lead to be forecast capability of global ocean-climate models.