Abstract
In this study we developed a solar model to estimate hourly solar radiation on horizontal surface using dry bulb temperature increase, relative humidity and total cloud cover. The developed solar model for Ulaanbaatar, Mongolia was verified by comparing the estimations with observational data of 2015. Estimated hourly global solar radiation was separated into direct normal and diffuse components with Gompertz function after examining its applicability for Ulaanbaatar. The Typical Meteorological Year is developed for Ulaanbaatar, Mongolia using observational data except solar data which is estimated with the developed solar model for the period of 2006 - 2015 in this study. The TMY contains hourly data totaling ten main weather elements such as dry bulb temperature, relative humidity, humidity ratio, global solar radiation on horizontal surface, direct normal solar radiation, diffuse radiation, wind direction, wind speed, total cloud cover and atmospheric pressure.
