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首页> 外文会议>International Conference on Dam Safety Management（2008水库大坝安全管理国际研讨会） >The Application Research on Radar Quantitative Precipitation Estimation Technology on Flood Forecast in Flood Season in BaiLianHe Reservoir
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The Application Research on Radar Quantitative Precipitation Estimation Technology on Flood Forecast in Flood Season in BaiLianHe Reservoir

机译：雷达定量降水估算技术在白莲河水库汛期洪水预报中的应用研究。

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摘要

The high resolution rain information in time and space can be obtained through ra-dar QPE (Quantitative Precipitation Estimation), and be input into the hydrological model to improve the precision of hydrological forecast. The paper takes the BaiLianHe catchment as research area, and adopts the grouping Z～I relationship to transfer radar reflectivity into rain, and check it with Kalman filtering combining with rain gauge, and then input rain in-formation from various estimation method into XinAnjiang model to make flood forecasting test. The test showed that when the radar QPE without calibration is input directly into hydrological model, the simulation results are not satisfactory, but when the radar QPE with calibration is input into the model, the forecast precision can be more improved. The resear-ches show that radar QPE has wide application prospect in hydrological forecast.
机译：可以通过雷达QPE（定量降水估计）获得时空的高分辨率降雨信息，并将其输入到水文模型中，以提高水文预报的精度。本文以白莲河流域为研究区域，采用Z〜I分组关系将雷达反射率转换为雨量，结合雨量计利用卡尔曼滤波进行核对，然后将各种估算方法的雨量信息输入新安江模型。进行洪水预报测试。试验表明，将未经校准的雷达QPE直接输入水文模型时，模拟效果不理想，但将经过校准的雷达QPE输入模型时，可以提高预报精度。研究表明，雷达QPE在水文预报中具有广阔的应用前景。

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