摘要
利用2019—2020年广西三部风廓线雷达的实时风产品与ERA5再分析资料进行分析对比,检验风廓线雷达数据质量。结果表明,三种风廓线雷达产品(ROBS、HOBS、OOBS)数值差距小,OOBS产品稍显优势,在1h内风廓线雷达探测的水平风波动不大。风廓线雷达数据整体小于ERA5再分析资料。三个站中,北海站的误差最小。北海站误差在2~6km,柳州站在4~6km,南宁站风向误差最小在1~4km,风速在4~6km。三个站的数据在0.5km以下误差都很大,柳州站和南宁站在9km以上误差也很大。分别选取北海站105°、6.5m·s^(-1),南宁站100°、7m·s^(-1),柳州站85°、8m·s^(-1)作为极端误差阈值,剔除极端误差后三个站的MAE都小于25°和3m·s^(-1),并且数据有效率都能达到70%以上。
The real-time wind products of three wind profile radars in Guangxi from 2019 to 2020 were analyzed and compared with ERA5 reanalysis data to test the data quality of wind profile radar.The results show that the numerical difference of the three wind profile radar products(ROBS,HOBS and OOBS)is small.The OOBs products have a slight advantage,and the horizontal wind wave detected by the wind profile radar is small within one hour.The overall wind profile radar data is smaller than ERA 5 reanalysis data.Among the three stations,Beihai station has the smallest error.The minimum error of Beihai station is 2~6km,that of Liuzhou station is 4~6km,that of Nanning station is 1~4km and that of wind speed is 4~6km.The data of the three stations have great errors below 0.5km,and the errors of Liuzhou station and Nanning station above 9km are also great.Choosing 105°and 6.5m·s^(-1) at Beihai station,100°and 7m·s^(-1) at Nanning station,85°and 8m·s^(-1) at Liuzhou station as the extreme error thresholds,after excluding extreme errors,the MAEs of the three stations are all less than 25°and 3m·s^(-1),and the data efficiency can reach more than 70%.
作者
黄晴
梁维亮
黄荣
Huang Qing;Liang Weiliang;Huang Rong(Guangxi Meteorological Observatory,Nanning 530022,China)
出处
《气象研究与应用》
2021年第4期83-88,共6页
Journal of Meteorological Research and Application
基金
广西气象局气象科研计划项目(桂气科2020M16)
广西气象局短时临近预报技术创新团队专项。
