中尺度模式的四维伴随同化系统及其同化试验

Adjoint Assimilation System of Mesoscale Models and Its Assimilation Experiments

摘要:

以中尺度模式MM4为基础,利用伴随码技术改进、完善了MM4伴随模式同化系统,并利用该系统进行了常规资料和非常规资料的伴随模式同化试验,例如加入了可降水量资料等。试验表明:在伴随模式同化系统中加入常规和非常规资料,可以改进初始场,从而改善预报场。

Abstract:

Based on adjoint code technique, the adjoint assimilation system of MM4 model is developed, and the assimilation experiments of conventional and non-conventional data are carried out. The results indicate that the adding of conventional and non-conventional observations into adjoint model system can improve the quality of initial field,thereof improve the result of forecasting.