Marine Stratocumulus Studies

维护过程中涉及的物理过程， 海洋层积云的消散将采用 飞机观测和理论模型。 的意见 本研究将使用NCAR Electra在 FIRE层积云场相（第一次国际 卫星云气候学项目）区域试验） 1987年7月在南加州海岸进行的 分析将利用平均值、湍流、云 微观物理学和伊莱克特拉的辐射测量。 总体目标是改进和推广方法 在大气环流中包括层积云过程 模型 具体的重点是夹带和混合 云顶过程，海洋对流环流 层积云，和过程，调节云的分数， 破云条件。 理论上的影响将涉及 发展一种新的对流的低阶谱模式， 包含代表潜热效应的术语， 卷吸、辐射和地表热通量，以及 切变背景风场的影响。 分析 模型的解将产生预期的 边界层环流的宏观结构：例如， 水平波长和嵌入带的方向， 行中循环的强度。 这些 将理论结果与得到的结构进行比较 火的测量。

The physical processes involved in the maintenance and dissipation of marine stratocumulus will be studied using aircraft observations and theoretical models. The observations for this study will be made using the NCAR Electra during the stratocumulus field phase of FIRE (First (International Satellite Cloud Climatology Project) Regional Experiment) to be conducted off the coast of southern California in July of 1987. The analysis will make use of mean, turbulence, cloud microphysics, and radiation measurements from the Electra. The overall objective is to improve and generalize methods for including stratocumulus processes in general circulation models. The specific focus is on entrainment and mixing processes at cloud top, convective circulations in marine stratocumulus, and processes that regulate the cloud fraction in broken cloud conditions. The theoretical effect will involve the development of a new low-order spectral model of convection that contains terms representing the effects of latent heating, entrainment, and radiative and surface heat fluxes, as well as the effects of a shearing background wind field. An analysis of the solutions to the model will produce the expected macrostructure of boundary layer circulations: for example, the horizontal wavelenghts and orientations of the embedded bands and the intensities of the circulations in the rows. These theoretical results will be compared with the structure obtained from the FIRE measurements.