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中文摘要: 根据多参数雷达（双偏振、双波长、多普勒）在美国科罗拉多高原初夏对含冰雹的暴雨的观测数据，我们分别应用S波段的反射率Zh比相差Kdp、以及X波段的比衰减Ax对降雨率R进行了估计，并将这些基于雷达参数的估计与地面雨量计的记录进行了比较。结果表明，分别基于Kdp和Ax的降雨率估计与雨量计的记载相当吻合，雨量累积差小于10％，而基于Zh的降雨率估计只有当Zh截断于55dBz时才能得到相似结果。研究结果肯定了Kdp在含有雨－冰雹混合结构的对流性暴雨中精确估计降雨率方面的作用。
中文关键词: 降雨率,双偏振,双波长,天气雷达
Abstract:Based on multiparameter radar (dual polarization,dual wavelength,and Doppler)observations of early Summer severe storm accompanied by hail,reflectivity Zh,specific differential phase Kdp at S band and X-band specific attenuation Ax were applied to estimate rainfall rates.The estimates from radar parameters were compared with groundbased raingage measurements.The results show that both R-Kdp and R-Ax relations were in good agreement with the raingage data,that is,less than 10% difference in the rainfall accumulations.The R-Zh relation produced similar results only when Zh was truncated at 55dBz.This study demonstrates the potential of Kdp for estimating rainfall rates in convective rainstorms with rain hail mixtures.
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基金项目:国家自然科学基金,国家教委优秀青年教师基金,广东省自然科学基金
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引用文本：
刘力,邓华秋,1997.多参数雷达在估计雹暴降雨率中的应用[J].气象,23(8):16-20.
,1997.Multiparameter Radar Application in Rainfall Rate Estimation in the Presence of Hail[J].Meteor Mon,23(8):16-20.
刘力,邓华秋,1997.多参数雷达在估计雹暴降雨率中的应用[J].气象,23(8):16-20.
,1997.Multiparameter Radar Application in Rainfall Rate Estimation in the Presence of Hail[J].Meteor Mon,23(8):16-20.