Application of Multiple Wind Retrieval Algorithms in Nowcasting

Atmosphere

Nan Li²  Ming Wei²  Ben Niu³  Jiawen Pan⁴  Wengang Zhang¹  Wei Guo⁵ 

[1] Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, CMA, Wuhan 430205, China; E-Mail:;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China; E-Mail:;Wuhan Central Meteorological Observatory, Wuhan 430074, China; E-Mail:;Xiamen Meteorological Bureau, Xiamen 361012, China; E-Mail:;Shanghai Center for Satellite Remote Sensing Applications, Shanghai 201199, China; E-Mail:

关键词: Doppler weather radar;    wind retrieval;    COTREC;    GVAD;    nowcasting;   

DOI  :  10.3390/atmos6060834

来源: mdpi

【 摘 要 】

Multiple wind retrieval algorithms are performed to retrieve wind fields, based on which radar reflectivity is extrapolated to implement nowcasting. The frequently used nowcasting algorithm COTREC (continuity of tracking radar echo by correlation), based on the reflectivity and wind retrieval algorithm GVAD (gradient velocity azimuth display), based on radial velocity are used. The wind fields retrieved by the two methods are taken as motion vectors to give a 60-min forecast of radar reflectivity. Comparison analysis on precipitation events shows that GVAD can be used in operational nowcasting as COTREC performs and for stable precipitation duration, COTREC gives better nowcasting results than GVAD, while, for evolving precipitation duration, GVAD gives better nowcasting results than COTREC.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.