新疆气象业务同化系统研发进展

The Development of Xinjiang Meteorology in Exploiting Data Assimilation Operational System

概述了新疆近些年围绕资料同化开展的技术开发与针对新疆强降水天气过程所开展的多源资料同化应用试验和评估。FY2E云导风、FY4A温湿廓线和云导风、区域雷达资料的同化,以及晴空下高频段的AMSU-A-NOAA-N15/18/N19、AMSU-A-NOAA-NB、ATMS_SNPP资料的同化对业务模式预报均有正贡献。针对在业务中如何提高资料应用率以及当前发现但并未解决的物理不合理性问题,指出了新疆气象数值预报业务系统维护应有的常态化工作,以及业务技术开发和短临预报系统建设所缺少的其它科技支撑等。提出以资料同化为支点的科技研发方向,对提高新疆区域数值模式预报研发和应用具有一定参考意义。

This article outlined the technical developments on data assimilation and multiple source data assimilation application test and evaluation of heavy rainfall process in Xinjiang in recent years.The results showed that the application of multiple source data assimilation tends to be positive to the NWP forecast on the basis of right data usage,including the data of FY2 E-AMV,FY4 A-AMV,FY4 A-temperature and-moisture retrievals,radar data,high frequencies AMSU-A-NOAA-N/5/18,AMSU-A-NOAA-19,METOP-A,ATMS data assimilation under the clear sky condition.It also presents the general idea of the routine tasks and the requirements of science and technology support in enhancing data assimilation application abilities and building nowcasting convection-permitting system with respect to how to explore data effectively and the unreasonable physics configuration or any unreasonable physics scheme issue is still unresolved.The orientation of data assimilation technique exploration is meaningful for Xinjiang NWP in promoting transform from research to operation effectively.