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Atmosphere 2015, 6(6), 834-849; doi:10.3390/atmos6060834

Application of Multiple Wind Retrieval Algorithms in Nowcasting

1
Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China
2
Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, CMA, Wuhan 430205, China
3
Wuhan Central Meteorological Observatory, Wuhan 430074, China
4
Xiamen Meteorological Bureau, Xiamen 361012, China
5
Shanghai Center for Satellite Remote Sensing Applications, Shanghai 201199, China
*
Author to whom correspondence should be addressed.
Academic Editor: Robert W. Talbot
Received: 21 March 2015 / Revised: 26 May 2015 / Accepted: 3 June 2015 / Published: 18 June 2015
View Full-Text   |   Download PDF [1470 KB, uploaded 23 June 2015]   |  

Abstract

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. View Full-Text
Keywords: Doppler weather radar; wind retrieval; COTREC; GVAD; nowcasting Doppler weather radar; wind retrieval; COTREC; GVAD; nowcasting
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Li, N.; Wei, M.; Niu, B.; Pan, J.; Zhang, W.; Guo, W. Application of Multiple Wind Retrieval Algorithms in Nowcasting. Atmosphere 2015, 6, 834-849.

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