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蒸发是水循环过程中的重要组成部分,对它的研究在水文、水利、农业灌溉,特别是在水库工程的运行管理等领域有着极其重要的作用。1988年5月6日,水利电力部发布实施的标准《水面蒸发观测规范》(SD265-88)规定,水文行业采用小型20 cm蒸发皿和E-601型蒸发器测定水面蒸发量。由于这2种仪器的性能、结构、尺寸、安装方式不同,观测值有很大的差别。因此,在资料运用和分析中必须进行数据成果转换,为了得出E-601型蒸发器与20 cm蒸发皿之间的换算关系,保证资料的统一及准确性、连续性和代表性,根据官厅水文站2004—2007年的观测资料进行对比分析。
Evaporation is an important part of the water cycle. Research on it plays an extremely important role in hydrology, irrigation and irrigation, especially in the operation and management of reservoir engineering. On May 6, 1988, the “Standard for Surface Evaporation Observation” (SD265-88) issued by Ministry of Water Resources and Electric Power stipulated that the hydrological sector should measure water surface evaporation using small 20 cm evaporating dish and E-601 evaporator. Due to the performance, structure, size and installation methods of these two kinds of instruments, the observed values are greatly different. Therefore, in the application and analysis of the data, it is necessary to convert the data results. In order to obtain the conversion relationship between the E-601 evaporator and the 20 cm evaporating dish and ensure the uniformity and accuracy, continuity and representativeness of the data, Hydrological station 2004-2007 comparative analysis of the observed data.