文章摘要
赵振东.泰山CD与济南SA天气雷达探测强冰雹风暴参数对比分析[J].海洋气象学报,2017,37(2):102-108
泰山CD与济南SA天气雷达探测强冰雹风暴参数对比分析
Intercomparison of parameters of strong hail storms derived from Jinan Radar(SA) and Taishan Radar(CD)
投稿时间:2016-11-10  修订日期:2017-06-05
DOI:10.19513/j.cnki.issn2096-3599.2017.02.013
中文关键词: 强冰雹  天气雷达探测  风暴参数
英文关键词: strong hail storms  radar detecting  parameters of storms
基金项目:山东省气象局重点科研项目(2012sdqxz05)
作者单位
赵振东 泰安市气象局 
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中文摘要:
      利用泰山CD雷达和济南SA雷达探测资料,对2016年6月13—14日和9月11日4个长寿命强冰雹风暴参数进行了对比分析。结果表明,4个强冰雹风暴成熟阶段济南SA雷达探测到的DBZM值都在60 dBZ以上,C-VIL值基本在50 kg·m-2以上,TOP值基本在9 km以上, 0613平阴风暴和0614章丘风暴不仅持续时间相差不多,而且DBZM、C-VIL、TOP值基本相近,DBZM基本在 64 dBZ以上,最大达到70 dBZ,C-VIL基本在60 kg·m-2以上,最大在80 kg·m-2左右,TOP值基本在10~5 km以上;SA雷达和CD雷达监测到的风暴参数有明显差异,SA雷达观测到的强风暴DBZM、C-VIL和TOP值明显大于CD雷达观测到的值,特别是DBZM和C-VIL在风暴强盛阶段差异更加明显,风暴强盛阶段, SA和CD雷达观测到的0613阳谷风暴、0613平阴风暴、0614章丘风暴和0911高青风暴的DBZM平均差值分别为10 dBZ、10 dBZ、9 dBZ和7 dBZ,C-VIL平均差值分别为30 kg·m-2、28 kg·m-2、29 kg·m-2和28 kg·m-2。造成强风暴参数差异性的主要因素是大的粒子或者强降雨对CD雷达电磁波强烈衰减,同时泰山CD雷达的地理环境和观测模式也是原因之一。
英文摘要:
      Based on the data of Taishan Radar(CD) and Jinan Radar(SA), the parameters of four long-life strong hail storms, which occurred on 13-14 Jun., 2016 and 11 Sep., 2016, are compared. The results show that as detected by the SA radar, DBZM values are greater than 60 dBZ, C-VIL values are over 50 kg〖DK〗·m-2, and the TOP values are above 9 km for the 4 strong hail storms at their mature stages. The DBZM, C-VIL, TOP values of 0613 Pingyin storm and 0613 Zhangqiu storm are similar, with DBZM greater than 64 dBZ (maximum value reaches 70 dBZ), C-VIL over 60 kg·m-2(maximum value is 80 kg·m-2), and TOP value above 105 km at storm mature stages. The parameters derived from SA radar and CD radar respectively have significantly differences. DBZM, C-VIL and TOP derived from SA radar are significantly larger than those from CD radar, especially for DBZM and C-VIL at storm mature stage. For 0613 Yanggu storm, 0613 Pingyin storm, 0614 Zhangqiu storm and 0911 Gaoqing storm at mature stage, the average difference of DBZM are 10 dBZ, 10 dBZ, 9 dBZ and 7 dBZ, respectively, and the average difference of C-VIL are 30 kg〖DK〗·m-2, 28 kg〖DK〗·m-2,29 kg〖DK〗·m-2 and 28 kg〖DK〗·m-2, respectively. The significant storm parameter differences are mainly generated by severe attenuation on CD radar electromagnetic waves by the large hail particles or the heavy rainfall, and it is also induced by the geographical environment and scan mode of the Taishan Radar.
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