无线气象站数据与人工观测蒸发量的资料同化——以白鹤滩电站坝址区数据为例

Data Assimilation of Wireless Weather Station Data and Manual Observed Evaporation

在MATLAB中使用最小二乘法拟合Goff-Gratch公式,得到关于气温的饱和水汽压函数。无线气象站观测得到的气象资料结合人工观测蒸发量,在MATLAB中进行回归分析,得到基于彭曼公式的日水面蒸发量计算公式。算例表明,与无线气象站的蒸发量计算值相比,回归分析得到的日水面蒸发量公式计算值与人工观测值能够同步对比。无线气象站资料和人工观测资料能够资料同化,适合在工程中推广。

In MATLAB, application of the least square method curve fitting Goff-Gratch formula can get the function of saturation vapor pressure about air temperature. Wireless weather station observation meteorological data in combination with manual observation evaporation can get daily evaporation formula based on Penman formula which was carried out in the MATLAB regression analysis. The example shows that comparing with wireless weather station evaporation calculation, the daily evaporation formula calculation by regression analysis can be compared simultaneously with the manual observation. It is suitable for promotion to apply data assimilation of weather station data and manual observed evaporation in the project.