Improved Treatment of Surface Turbulent Fluxes over Sea Ice: Towards a Unified Parameterization over Land, Ocean, and Snow/Ice in Climate Models

该项目旨在改善气候模型中对大气与海洋和陆地上冰雪之间湍流交换的理解和表示。其主要目的是：（a）海冰上空大气湍流表面通量的各种参数化方案的相互比较，（B）改进海冰上空粗糙度长度的计算，以及在非常稳定条件下的湍流交换系数，（c）量化湍流通量参数化对海洋和陆地上空雪/冰模拟的影响，以及（d）评估全球气候模拟中统一的湍流通量参数化对陆地、海洋和海冰的影响。该项目将为研究生提供培训，而研究成果将纳入本科和研究生教学课程。

This project seeks to improve the understanding and representation, in climate models, of the turbulent exchanges between the atmosphere and snow and ice over oceans and land. The principal objectives are (a) the intercomparison of various parameterization schemes for atmospheric turbulent surface fluxes over sea ice, (b) improving the computation of roughness lengths over sea ice, as well as the turbulent exchange coefficients under very stable conditions, (c) quantifying the impacts of turbulent flux parameterization on the simulation of snow/ice over ocean and land, and (d) evaluating the impact of a unified turbulent flux parameterization over land, ocean and sea ice in a global climate simulation.The improved formulations expected from this project could be adopted in the NCAR Community Climate System Model for community-wide use. The project will provide training for graduate students, while research results will be included in undergraduate and graduate teaching courses.