P 2 B . 9 APPLICATION OF THE RAIN PROFILING ALGORITHM “ ZPHI ” TO THE X-BAND POLARIMETRIC RADAR DATA OBSERVED IN JAPAN
P 2 B . 9 APPLICATION OF THE RAIN PROFILING ALGORITHM “ ZPHI ” TO THE X-BAND POLARIMETRIC RADAR DATA OBSERVED IN JAPAN
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P 2 B. 9 雨廓线算法“ZPHI”在日本观测到的 X 波段极化雷达数据中的应用
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
M. Suto
中科院分区：
文献类型：
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作者：
K. Iwanami;E. L. Bouar;J. Testud;M. Maki;R. Misumi;Sang;M. Suto
准确估算降雨量不仅对研究降水系统，而且对减轻洪水、浅层滑坡等强降雨灾害具有重要意义。Z-R关系已被广泛应用于降雨率的估算，但雨滴谱的变异性对Z-R关系的影响很大。最近极化技术使得有可能使用特定的差分传播相位KDP定量降雨率估计。重新评估X波段雷达的价值，是因为它们对小雨的KDP灵敏度比沙C波段雷达高，尽管它们被认为不适合作战使用，因为雨会产生强烈的衰减。
It is so important to estimate rain rate accurately for not only investigation of precipitation systems but also mitigation of disasters related to heavy rainfall such as floods and shallow landslides. Z-R relationship has been used for rain rate estimation extensively but it is well known that the Z-R relationship is seriously affected by variability of raindrop size distributions. Recently polarimetric technique made it possible to use the specific differential propagation phase KDP for quantitative rain rate estimates. X-band radars are revalued because they have better sensitivity of KDP for light rain than Sand C-band radars although they have not been thought to be appropriate for the operational use because of strong attenuation by rain.