An Initial Study on Assimilating Satellite-derived Total Precipitable Water in a Variational Assimilation System

摘要：

　　A variational assimilation system was used to examine the comparative impact of including satellite derived total column water vapor from MODIS NIR and IR observations(observed reflectance or radiance).The results show that the initial humidity field was improved by assimilating the satellite derived total column water vapor,especially over the rainfall areas,at the same time,the initial temperature field and the geopotential height field were also improved.The precipitation forecast difference between including and excluding the total column water vapor experiments was obvious during the assimilation time-window,and the precipitation forecast was also improved in the twenty-four hours precipitation forecast.More precipitation information can be obtained by introducing the satellite derived total column water vapor information into the variational assimilation system.

作者: Q.Lu X.Yang C.Wu J.Zheng D.Qin H.Yang P.Zhang

作者单位: National Satellite Meteorological Center of CMA,Beijing,China

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)

会议地点: 苏州

会议语种:英文

页码: 576-580

在线出版日期: 2011-09-01（万方平台首次上网日期，不代表论文的发表时间）