ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 41 Issue 9 > 2015,41(9):1095-1103. DOI:10.7519/j.issn.1000-0526.2015.09.006 Prev Next
Analysis on Doppler Radar Characteristics of Warm Area Rainstorm in Southeastern Gansu During 19-20 June 2013
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Abstract:
Based on Tianshui Doppler radar data, characteristics of radar reflectivity, Doppler velocity and PUP products during a warm area rainstorm in Southeastern Gansu Province in 19-20 June 2013 are analyzed. The results show that the characteristics of radar reflectivity are extremely similar with the characteristic of warmarea torrential rains in eastern and southern China. The “train effect” of local strong echo is obvious. Strong echoes are generally lower than 45 dBz, and mainly distribute in below 0℃ layer. It was advantageous to the generation of strong echo and highfrequency “train effect” that warm advection and wind convergence structure in boundary layer to middlelower level, lowlevel jet maintaining showed on Doppler velocity characteristics. The mesoγ scale vortex has indicative significance for the nowcasting of severe precipitation.
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