A Cloud Parameters Retrieval Algorithm in the Variational Assimilation System

摘要：

　　According to the past experience of retrieving cloud parameters,the assimilation of cloud-affected infrared radiances is a difficult problem in the numerical weather prediction.Based on our own four-dimensional variational assimilation (4D-Var) systems characteristics,we have designed our own cloud-affected infrared satellite radiances variational assimilation system which includes a one-dimensional variational assimilation (1D-Var) retrieval algorithm of cloud parameters.In this system,cloud parameters are considered as the intermediary to constrain the radiative transfer calculation after they are passed to our 4D-Var system.Consequently,acquiring the accurate cloud parameters is the key step of the assimilation of cloud-affected infrared radiances.This article analyzes the 1D-Var algorithm which is used to retrieve cloud parameters in our variational data assimilation system and validates the good performance of this method.

关键词： cloud parameters ID-Var 4D-Var

作者: Huang Qunbo Zhang Weimin Yu Yi

作者单位: School of computer science, National University of defense technology, Changsha, China School of computer science, National University of defense technology, Changsha, China;NO.94865 Troo

会议类型: 国际会议

会议名称: 2012 2nd International Conference on Computer Application and System Modeling(2012第二届计算机应用与系统建模国际会议)(ICCASM-2012)

会议地点: 沈阳

会议语种:英文

页码: 599-602

在线出版日期: 2012-07-27（万方平台首次上网日期，不代表论文的发表时间）