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

这项工作是针对改善参数化和性能的NCAR社区气候系统模式（CCSM）。 主要有四项任务：1）海洋表面温度日变化的参数化; 2）当植被覆盖接近零时，冠层粗糙度长度和位移高度收敛于裸土值（现有模式不一致）; 3）高、矮植被上雪的真实处理; 4）海冰上大气湍流传输算法的改进。 CCSM是美国大学的社区气候建模资源，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。 不断改进这种气候模式对于促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.