自动气象站湿球温度快速计算方法

摘要

The wet bulb temperature is an important meteorological parameter in heating,ventilation,power plant cooling towers and other many engineering designs.As automatic weather stations（AWS） are widely used in the meteorological station,the direct observation data of wet-bulb temperature gradually stop,which gives difficulty in the engineering design parameters of wet-bulb temperature in the weather analysis and the application.For the calculation of the wet-bulb temperature at AWS,we employed the ground-based meteorological observation humidity formula and the basic idea of Newton＇s iterative method, and obtained a simplified general iterative formula.An empirical formula of wet-bulb temperature is used to calculate its initial value,and an EXECL spreadsheet is used to complete the iterative calculation of wet-bulb temperature.The results show that,this calculation method of wet-bulb temperature has high accuracy,less computation,as well as the calculation process simple and controllable.Therefore,it can be widely used in the wet-bulb temperature calculation at AWS.%湿球温度是采暖通风、电厂冷却塔等工程设计中的重要气象参数。随着自动气象站在台站的广泛使用,湿球温度的直接观测资料逐渐停止,这给工程设计中湿球温度的气象参数分析和气象资料的应用造成了困难。对于自动气象站湿球温度的计算,现提出基于地面气象观测的湿度参量公式和牛顿迭代法基本思想,采用简化一般的迭代公式,并利用湿球温度的经验公式计算初始值,采用EXECL电子表格完成湿球温度的迭代计算。结果表明,该方法计算湿球温度,精度较高,计算量较小,计算过程简单可控,可广泛应用于自动气象站的湿球温度计算。