摘要
中国常用观测水面蒸发仪器有E601型、20 m^(2)和20 cm口径蒸发皿等,实验资料显示,大水体水面蒸发皿观测数据与天然水体蒸发量相比误差较小,可忽略不计。利用衡水水文实验站20 m^(2)蒸发皿观测数据,同步计算出衡水湖水面蒸发量,分析其变化特征,得出衡水湖多年平均水面蒸发量为3 187万m^(3),极值差572.1万m^(3),极值比1.20,变差系数0.06。水面蒸发量是水量平衡计算的重要组成部分,利用大水体蒸发皿观测数据计算分析水面蒸发量,对水平衡计算及水资源规划等工作具有重要意义。
The calculation of water surface evaporation of Hengshui Lake is an important part of the water balance calculation of Hengshui Lake.The commonly used instruments for observing water surface evaporation include E601 evaporation pan,20 m^(2) evaporation pan,20 cm diameter evaporation pan,etc.The experimental data showed that the error between the observation data of evaporation pan on the water surface of large water body and the evaporation of natural water body was small and negligible.In this paper,the water surface evaporation of Hengshui Lake was synchronously calculated by using the observation data of the 20 m^(2) evaporation pool at Hengshui hydrological experimental station,and its change characteristics were analyzed.The average water surface evaporation of Hengshui Lake was 31.87 million m^(3),the extreme value dfference was 5.721 million m^(3),the extreme value ratio was 1.20,and the coefficient of variation was 0.06.The calculation of water surface evaporation is an important part of water resources work.It is of great significance to calculate and analyze water surface evaporation using the observation data of large water evaporation pan for water balance calculation and water resources planning.
作者
袁子琦
YUAN Zi-qi(Hebei Hengshui Hydrological Survey and Research Center,Hengshui 053000,China)
出处
《海河水利》
2024年第3期83-85,88,共4页
Haihe Water Resources
关键词
水面蒸发量
衡水湖
20
m^(2)水面蒸发皿
大水体水面蒸发皿
water surface evaporation
Hengshui Lake
20 m^(2) water surface evaporation pan
water surface evaporation pan of large water
