Effects of Solar Radiation on the Performance of Pyrgeometers with Silicon Domes

摘要: Abstract The performance of the Eppley pyrgeometer with a silicon dome presents several anomalies during daytime measurements. These problems are related mainly to solar heating dome, which causes nearly instantaneous fluctuations, about ±1%–2% from average value, in longwave irradiance measured by cloudless days. An evaluation effect made set sun and shade experiments indicates that output includes an equivalent 3.6% incoming radiation. In spite improvement use instead KRS-5 domes, error due requires some kind correction. Sun under number wind speed conditions used derive empirical correction is based on global