Numerical Weather Prediction over the Tropics

摘要：9312537，PI-Krishnamurti，“热带数值天气预报”：Krishnamurti博士将继续研究与热带地区数值天气预报改进有关的一些课题。具体来说，该奖项将执行五项广泛的任务。首先是物理初始化，即确保在预报开始时模式热力学场所表示的大气初始描述在各种物理过程之间是一致的，即湿度场、降雨、云等与地球辐射平衡一致。在大型数值模型中表示云是复杂而困难的。第二项任务是测试和比较两个有前途的云方案。第三和第四个任务是研究改进热带气旋和大尺度季风环流两种热带现象的预报。最后，PI和他的同事将继续调查季风环流的低频部分，以及维持环流所需的能量交换特征。这些任务中的每一项都将有助于全面改进热带地区的数值预报，而这反过来又有助于改进全球预报。

ABSTRACT: 9312537, PI-Krishnamurti, "Numerical Weather Prediction Over the Tropics": Dr. Krishnamurti will continue research on a number of topics relating to the improvement of numerical weather prediction in tropical regions. Specifically, five broad tasks will be pursued under this award. The first is physical initialization which involves ensuring that the initial description of the atmosphere as represented in the model thermodynamic fields at the beginning of a forecast is consistent among various physical processes that is, the humidity fields, rainfall, clouds, etc. are consistent with the earth's radiation balance. Representing clouds in large numerical models is complex and difficult. The second task involves the testing and comparing of two promising cloud schemes. The third and fourth tasks involve research on improving forecasts of two tropical phenomena the tropical cyclone and the large scale monsoon circulation. Finally, the PI and his colleagues will continue an investigation of the low frequency portion of the monsoon circulation and the characteristics of the energy exchanges that are required to maintain the circulation. Each of these tasks will contribute to the overall improvement of numerical prediction over tropical regions which, in turn, contributes to improve global predictions.