A Case Study of Radar-Derived Quantitative Precipitation Estimation

Li Li Yang; Yi Yang; You Cun Qi; Xue Xing Qiu; Zhong Qiang Gong

doi:10.4028/www.scientific.net/AMR.726-731.4541

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 726-731A Case Study of Radar-Derived Quantitative...

A Case Study of Radar-Derived Quantitative Precipitation Estimation

Abstract:

The convective and stratiform precipitations have different precipitation mechanisms. Different reflectivityrainfall rate (ZR) relations should be used for them. A heavy precipitation process on 22nd July, 2009(UTC) in Anhui Province is analyzed with Hefei Doppler radar and 269 rain gauges. First, the type of precipitation is obtained by a fuzzy logic algorithm with radar data. Then the reflectivity values are converted to rainfall rates using an adaptive Z-R relation according to different rain types. It is tested with the case and showed significant improvements over the current operational Z-R QPE when compared with gauges. Results also show that the precipitation process is caused by stratiform and convective precipitation; the rain estimated from radar corresponds well with cloud classification.

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Periodical:

Advanced Materials Research (Volumes 726-731)

Pages:

4541-4546

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.726-731.4541

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Online since:

August 2013

Authors:

Li Li Yang, Yi Yang, You Cun Qi, Xue Xing Qiu, Zhong Qiang Gong

Keywords:

Cloud Classification, QPE, Radar

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