气象科学2025，Vol.45Issue(4)：560-571,12.DOI:10.12306/2024jms.0016
基于观测系统模拟试验的双雷达风场反演算法评估
Evaluation of dual-Doppler radar wind retrieval methods based on observation system simulation experiment
摘要
Abstract
The accuracy and error characteristics of two dual-Doppler radar wind retrieval methods were evaluated by using Observation System Simulation Experiment(OSSE).A severe convective storm was simulated by the Weather Research and Forecasting model(WRF),and the model wind field was used as the true value to quantitatively calculate the errors of the retrieved wind field.Volumetric scans of reflectivity and radial velocity similar to operational radars were generated from the WRF output by placing virtual radars at different locations within the WRF domain.Three-dimensional wind fields were then retrieved from the simulated radar scans by the iterative and variational methods.The speed,divergence,vorticity,and vertical velocity fields in the retrieved wind were compared with the true wind at different periods of the lifecycle of the simulated convective storm.Results show that both methods were able to recover the basic characteristics of the wind fields.The variational method was able to better recover the vertical velocity,divergence,and vorticity fields of the convective storm,while those retrieved from the iterative method were either absent or too weak.关键词
双多普勒雷达风场反演/误差分析/超级单体/飑线Key words
dual-Doppler radar wind retrieval/error analysis/supercell/squall line分类
天文与地球科学引用本文复制引用
罗锐莹,唐晓文,郑艳..基于观测系统模拟试验的双雷达风场反演算法评估[J].气象科学,2025,45(4):560-571,12.基金项目
海南省南海气象防灾减灾重点实验室开发基金资助项目(SCSF202202) （SCSF202202）
