新旧两种探测技术对蒸发差异性分析

Difference analysis of evaporation with new and old detection techniques

利用福泉国家气象观测站新30 a资料(1981—2010年)的小型蒸发观测资料与2014年、2015年自动大型蒸发传感器观测资料进行比较,统计分析了影响蒸发的主要因素。结果表明:新旧两种探测技术蒸发量差异比较大,新探测年、月、日蒸发量明显小,夏秋季差异大、冬春季差异较小。重点分析了两种探测手段对实际蒸发量的影响因素及提高蒸发观测值的方法,认为自动大型蒸发传感器数据更准确,更接近真实值。

A comparison was made between observation data of small evaporation station of new 30A materials （1981--2010） of Fuquan National Meteorological Observation Station and the observation data of automatic large e- vaporation sensor in 2014 and 2015. The main factors affecting evaporation were statistically analyzed. The results show that the difference of evaporation amount between the new and old detection technologies is quite large, the new detection technology shows that the annual, monthly and daily evaporation detected by the new detection tech- nology is obviously smaller than that of the old ones. The difference between summer and autumn is large, and the difference between winter and spring is small. This paper focuses on the analysis of the influence of two detection methods on the actual evaporation and the method for improving evaporation observation value. We believe that the automatic large evaporation sensor data is more accurate, closer to the true value.