Plateau Meteorology

Plateau Meteorology >

2016 , Vol. 35 >Issue 2: 548 - 559

DOI: https://doi.org/10.7522/j.issn.1000-0534.2014.00154

Quality Analysis of Differential Phase Data for C-Band Dual- Polarimetric Doppler Weather Radar

  • CAO Yang ,
  • SU Debin ,
  • ZHOU Yunjun ,
  • XU Wenjing
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  • Chengdu University of Information Technology, Chengdu 610225, China;2. Beijing Meteorological Bureau, Beijing 100089, China

Received date: 2014-07-10

  Online published: 2016-04-28

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Abstract

The specific differential phase is an important parameter for meteorological applications, such as rainfall estimation and particle identification, because it is not affected by propagation attenuation and it is closely related to rain intensity. In this paper, we use a set of algorithm to control the quality of differential phase data for C-band dual-polarimetric Doppler weather radar which is built in Beijing Meteorological Bureau (BMB), including ground clutter identification, phase unfolding initial phase identification and adjusting and phase filtering. To estimate the specific differential propagation phase by computing the derivative of range profiles of the differential phase. The data of the extraordinary rainstorm on 21 July 2012 is used to evaluate the algorithm. The results indicate that the algorithm can work on ground clutter, wrapped phase and statistical fluctuations, and the specific differential phase also can effectively reflect the characteristics of the precipitation particles.

Key words： C-band dual-polariza; Differential phase; Specific differentia; Quality control

Cite this article

CAO Yang , SU Debin , ZHOU Yunjun , XU Wenjing . Quality Analysis of Differential Phase Data for C-Band Dual- Polarimetric Doppler Weather Radar[J]. Plateau Meteorology, 2016 , 35(2) : 548 -559 . DOI: 10.7522/j.issn.1000-0534.2014.00154

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