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Liu Liping, Wu Linlin, Wu Chong, Wang Xudong, Chen Xiaohui, Cao Junwu, Zhuang Wei. 2014: Field Experiment on Convective Precipitation by X-Band Phased-Array Radar and Preliminary Results. Chinese Journal of Atmospheric Sciences, 38(6): 1079-1094. DOI: 10.3878/j.issn.1006-9895.1402.13253
Citation: Liu Liping, Wu Linlin, Wu Chong, Wang Xudong, Chen Xiaohui, Cao Junwu, Zhuang Wei. 2014: Field Experiment on Convective Precipitation by X-Band Phased-Array Radar and Preliminary Results. Chinese Journal of Atmospheric Sciences, 38(6): 1079-1094. DOI: 10.3878/j.issn.1006-9895.1402.13253
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Field Experiment on Convective Precipitation by X-Band Phased-Array Radar and Preliminary Results

  • 1.

    State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081

  • 2.

    State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081;Nanjing University of Information Science and Technology, Nanjing 210044

  • 3.

    State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081;Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610072

  • 4.

    Anhui Sun-Create Electronics Ltd. Co., Hefei 230088

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  • Received Date: September 01, 2013
  • Revised Date: February 24, 2014
    Graphical Abstract
    • Abstract
  • Developed by the State Key Laboratory of Severe Weather, the Chinese Academy of Meteorological Sciences, and Anhui Sun-Create Electronics Ltd. Co., X-band phased-array radar (XPAR) was combined with C-band polarization radar (CPOL) to observe convective precipitation in Heshan, Jiangmen district, Guangzhou, from April to June 2013. S-band operational radar (SA) data were also collected to examine the reflectivity bias of XPAR. In this study, the work modes and observation capability for convective precipitation are examined to improve the radar performances. The characteristics of XPAR and work mode are first introduced in this paper, and the precipitation structures and reflectivity sensitivities by three work modes are compared with those by CPOL and SA. XPAR data with temporal resolution of 1 min are used to analyze the genesis and evolution of convective cell that developed in the rear of a convection line on May 30, 2013. The results indicate that XPAR can capture the main characteristics of 3D structures of precipitation with the three work modes and can complete one volume scan within 1 min with higher temporal and spatial resolutions than that by CPOL and SA. Moreover, the XPAR data with fine mode can reveal the initiation and evolution of convective cells in detail, in addition to two convergence zones and their relationships with reflectivity structures, which could not be observed by CPOL and SA. Further, the XPAR data with high temporal and spatial resolutions are helpful for improving the understanding of the meso-γ and additional detailed structures in convective systems.
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    • References (13)
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    • ISSN 1006-9895  CN 11-1768/O4

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