Land-Atmosphere-Ocean-Ice Interface Processes in the National Center for Atmospheric Research (NCAR) Community Climate System Model (CCSM)

这项工作旨在改进NCAR社区气候系统模式(CCSM)的参数化和性能。其主要任务有四个：1)海洋皮肤温度日循环的参数化；2)当植被覆盖接近于零时，冠层粗糙度长度和位移高度与裸土值的收敛(现有模型的不一致)；3)对高矮植被上的雪进行现实处理；4)改进海冰上的大气整体湍流传输算法。CCSM是美国大学的社区气候模型资源，也是政府间气候变化专门委员会(IPCC)评估中使用的两个美国模型之一。不断改进这一气候模型对于增进我们对气候系统的理解是必要的。更广泛的影响还包括对研究生的支持。

This work is directed toward improving the parameterizations and performance of the NCAR Community Climate System Model (CCSM). There are four main tasks: 1) parameterization of ocean skin temperature diurnal cycle; 2) Convergence of canopy roughness length and displacement height to bare soil values as vegetation cover approaches zero (an existing model inconsistency); 3) Realistic treatment of snow over short and tall vegetation; 4) Improvement of the atmospheric bulk turbulent transfer algorithm over sea ice. The CCSM is the community climate modeling resource for U.S. universities, and one of two U.S. models used in the Intergovernmental Panel on Climate Change (IPCC) assessments. Constant improvement of this climate model is necessary to advance our understanding of the climate system. Broader impacts also include support of a graduate student.