Preliminary Results from Assimilating Rain Rate Derived from Satellite
Inadequate specification of divergence and moisture in the initial conditions of numerical models results in the well-documented spinup problem.Observational studies indicate that latent heat release can be a key ingredient in the intensification of extratropical cyclones.As a result,the assimilation of rain rates during the early stages of a numerical simulation results in improved forecasts of the intensity and precipitation patterns associated with extratropical cyclones.Rawin observation is the important observation to record the precipitation; fortunately,the precipitation information could be quantitatively estimated from geostationary IR observation,Microwave observation and Radar observation.Here,a technique is described to assimilate the satellite derived rain rate data into a mesoscale model.Compared to the control simulation,assimilation simulation gives rise to a dramatic improvement in forecasts of precipitation patterns and geopotential height fields when assimilating the rain rate.
Q.Lu X.Yang R.You D.Qin H.Yang P.Zhang
National Satellite Meteorological Center of CMA,Beijing,China
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
572-575
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）