solar radiation, weather, spectral composition, Ostrava

Incident solar radiation is influenced by many factors. Using our data, the influence of weather changes on the dose of incident solar irradiance and its spectral composition are described. Solar radiation components were measured continuously by a system of sensors. Data for 2014 were chosen for analyses. Days were divided into categories according to weather conditions and daily radiation patterns. Percent differences in received solar radiation between sunny and cloudy days were calculated for eight months. Differences in received solar radiation between clean and polluted days were calculated for sunny and cloudy days in December 2014. Mean incident solar radiation during cloudy days was reduced by 61% from the value for sunny days (in summer months) and by 64% from the value for sunny days in winter months. Clouds significantly reduced incident solar radiation as did the air pollutant PM10, but there were probably other factors also contributing to the reduction in incident solar radiation.

Incident solar radiation is influenced by many factors. Using our data, the influence of weather changes on the dose of incident solar irradiance and its spectral composition are described. Solar radiation components were measured continuously by a system of sensors. Data for 2014 were chosen for analyses. Days were divided into categories according to weather conditions and daily radiation patterns. Percent differences in received solar radiation between sunny and cloudy days were calculated for eight months. Differences in received solar radiation between clean and polluted days were calculated for sunny and cloudy days in December 2014. Mean incident solar radiation during cloudy days was reduced by 61% from the value for sunny days (in summer months) and by 64% from the value for sunny days in winter months. Clouds significantly reduced incident solar radiation as did the air pollutant PM10, but there were probably other factors also contributing to the reduction in incident solar radiation.