Numerical Weather Prediction over the Tropics

摘要：9312537，PI-Krishnamurti，“热带地区的数值天气预报”：Krishnamurti博士将继续研究与改善热带地区数值天气预报有关的一些主题。 具体而言，该奖项将开展五大任务。 首先是物理初始化，这涉及到确保在预报开始时，模式热力学场中对大气的初始描述在各种物理过程中是一致的 也就是说，湿度场，降雨，云等都与地球的辐射平衡相一致。 在大型数值模型中表示云是复杂而困难的。 第二个任务涉及两个有前途的云计划的测试和比较。 第三和第四项任务涉及改进两种热带现象--热带气旋和大尺度季风环流--的预报的研究。 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善热带地区的数值预报，从而有助于改善全球预报。

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.