| 南半球大气环流对华南前汛期降雨影响初探 |
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| 引用本文： | 张爱华,吴恒强,覃武,蒋伯仁.南半球大气环流对华南前汛期降雨影响初探[J].气象,1997,23(8):10-15. |
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| 作者姓名： | 张爱华 吴恒强 覃武 蒋伯仁 |
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| 作者单位： | 广西气象科学研究所，广西气象局山东省气象局 |
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| 摘 要： | 利用南半球平面气压场格点资料，通过着值场和相关分析，研究了南半球大气环流对华南前汛期降雨的影响。结论指出，无论是同期还是前期，华南前汛期多雨年和少雨年所对应的南半球大气环流系统基本呈反相，两者之间存在密切关系。
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| 关 键 词： | 南半球 大气环流 华南 前汛期 降水影响 |
The Preliminary Exploration for the Influence of General Circulation over Southern Hemisphere on Precipitation over South China during Pre-Flood Season |
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| Liu Li,Deng Huaqiu.The Preliminary Exploration for the Influence of General Circulation over Southern Hemisphere on Precipitation over South China during Pre-Flood Season[J].Meteorological Monthly,1997,23(8):10-15. |
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| Authors: | Liu Li Deng Huaqiu |
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| Abstract: | Based on multiparameter radar (dual polarization,dual wavelength,and Doppler)observations of early Summer severe storm accompanied by hail,reflectivity Z h ,specific differential phase K dp at S band and X band specific attenuation A x were applied to estimate rainfall rates.The estimates from radar parameters were compared with groundbased raingage measurements.The results show that both R K dp and R A x relations were in good agreement with the raingage data,that is,less than 10% difference in the rainfall accumulations.The R Z h relation produced similar results only when Z h was truncated at 55dBz.This study demonstrates the potential of K dp for estimating rainfall rates in convective rainstorms with rain hail mixtures. |
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| Keywords: | rainfall rate dual polarization dual wavelength weather radar |
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