Study On Ways To Improve The Efficiency Of Water Surface Evaporation Measurement And Forecasting Of Hydrology Station

In recent years,with the rapid development of economic society and science and technology,hydrological observation methods have been greatly improved.At present,automatic precipitation collection,transmission and processing have been realized in the whole province,and breakthroughs have been made in the research and development of automatic evaporation observation technology in China.In the construction of the hydrological monitoring system for small and medium-sized rivers,a large number of evaporation automatic monitoring equipment has been introduced in our province,and the installation and delivery of evaporation automatic monitoring equipment have been completed.However,the accuracy,stability and applicability of the equipment have not been fully mastered,so it is necessary to carry out comparative observation and analysis and research,and fully master the performance and maintenance methods of the equipment.In this paper,a comparative test study is conducted on the automatic and manual data of water surface evaporation in The Hydrological station of Massachusetts from 2017 to 2018,and the accuracy of automatic and manual observation level is analyzed respectively,so as to distinguish or evaluate the reliability of automatic evaporation level observation.Starting from the rainfall error of rain gauge observation,which is an important source affecting the evaporation observation error,this paper analyzes and evaluates that the measurement error of rain gauge may bring error to automatic evaporation during the rain period,and provides a basis for improving the calculation method.Based on the analysis of the reliability of the equipment operation and the results of the comparison and measurement,based on the understanding of the performance and operation requirements of the equipment,the suggestions for the improvement of automatic evaporation observation technology are put forward,which provides technical support for further improving and popularizing the automatic measurement and reporting technology of water surface evaporation,realizing the automation of water surface evaporation and promoting the reform of hydrological monitoring...