Evaluation of the Convective Boundary Layer in the NMC Medium Range Forecast Model

首席研究员将研究 热带海洋上空的对流边界层， 国家气象中心（NMC）的中期（7-10天） 预测模型 该模型的气候学将与 用辐射-对流平衡产生的热力学数据 模型 能源预算计算将进行评估， 模型的物理缺陷，并评估 边界层和大尺度模式之间的反馈 环境 敏感性实验将被设计来探索 如何在NMC中表示大气物理过程 模型可以改进。 一个重要的任务是试图改善 浅云参数化通过显式计算 积云动量输送 这项研究将与科学家合作， NMC作为NSF-NMC数值天气联合计划的一部分 预测. 这项研究将是一个重要的贡献， 改进中期天气预报业务， 了解热带对流边界层。

The principal investigator will study the structure of the convective boundary layer over the tropical oceans as predicted by the National Meteorological Center's (NMC) medium range (7-10 day) forecast model. The model's climatology will be compared with thermodynamic date produced with a radiative-convective equilibrium model. Energy budget calculations will be done to assess the deficiencies in the physics of the model and to evaluate the feedback between the boundary layer and the larger-scale model environment. Sensitivity experiments will be designed to explore how representation of atmospheric physical processes in the NMC model can be improved. An important task is to attempt to improve the shallow cloud parameterization by explictly calculating the cumulus momentum transport. The research will be done in collaboration with scientists at NMC as part of the NSF-NMC Joint Program in Numerical Weather Prediction. This research will be an important contribution to the improvement of operational medium weather forecasts and better understanding of the tropical convection boundary layer.