本文已被:浏览 850次 下载 2423次
投稿时间:2008-01-04 修订日期:2008-01-30
投稿时间:2008-01-04 修订日期:2008-01-30
中文摘要: 目前数值模式输出的空间分辨率较低,缺少区域信息,很难对区域气候做精确的预 测。降尺度方法通过把大尺度、低分辨率的数值模式输出信息转化为区域尺度的地面气候变 化信息(如气温、降水),从而达到弥补数值模式预测区域未来气候变化不足的目的。这种做 法的基础在于区域气候变化是以大尺度(如大陆尺度甚至行星尺度)气候为条件的。统计降尺 度法以大尺度数值预报产品为预报因子,利用历史资料建立区域预报量与大尺度预报因子之 间的统计模型,实现对数值预报产品的释用。在系统论述统计降尺度法的基本原理、一般步 骤的基础上,初步探讨统计降尺度法在中期天气预报方面的应用。
Abstract:Numerical forecast models are widely used as an important tool of proj ecting global climate change. However, their resolution is too coarse to provide the regional scale information. Therefore, downscaling methods for extracting r egional scale information from output of numerical forecast models are dev eloped. Statistical downscaling techniques can be used to predict regional scale climate by using statistical relationship between the large scale climate and t he regional scale climate. On the basis of introducing the theory and approach o f statistical downscaling, application of statistical downscaling to the medium term weather forecast was simply discussed.
文章编号: 中图分类号: 文献标志码:
基金项目:干旱气象科学研究基金(IAM200704)、国家自然科学基金项目(40675 077)和国家科技支撑计划项目(2007BAC29B03)共同资助
Author Name | Affiliation |
Li Jiangping | College of Atmospheric Sciences,Lanzhou University, 730000 |
Wang Shigong | College of Atmospheric Sciences,Lanzhou University, 730000 |
引用文本:
李江萍,王式功,2008.统计降尺度法在数值预报产品释用中的应用[J].气象,34(6):41-45.
Li Jiangping,Wang Shigong,2008.Application of Statistical Downscaling Method to Numerical Weather Forecast [J].Meteor Mon,34(6):41-45.
李江萍,王式功,2008.统计降尺度法在数值预报产品释用中的应用[J].气象,34(6):41-45.
Li Jiangping,Wang Shigong,2008.Application of Statistical Downscaling Method to Numerical Weather Forecast [J].Meteor Mon,34(6):41-45.