黔南州不同雨量观测精度与降水特征值的对比分析

A Comparative Analysis of Different Precipitation Observation Precisions and Precipitation Characteristic Values in Qiannan, Guizhou Province

将水文站的虹吸式雨量计全部替换为无人值守的翻斗式遥测雨量计,极大地缩短了降水信息传播时间,但由于翻斗式遥测雨量计分辨率(0.5mm)与虹吸式雨量计分辨率(0.1mm)不同,其观测资料的一致性将受到影响。通过对贵州省黔南州三个水文站各种时段不同观测精度降水特征值的对比,定量分析了其误差范围,可为水文资料的一致性分析提供参考。

Analysis of uniformity for hydrological data is an important part of three characteristics （reliability, uniformity, representativeness） in hydrological analysis and water resources survey and assessment. For the need of both water resources monitoring and flood control, replacing siphon rainfall recorder with telemetering tipping-bucket rainfall recorder can shorten the travel time of precipitation information, increase fore- cast lead time of flood forecasting and establish foundation of modernization for water resources monitoring. The uniformity of observational data are impacted because of the different resolution between telemetering tipping-bucket rainfall recorder and siphon rainfall recorder. The error range was quantitatively analyzed by comparing the various observation precisions of different durations.