Glover, J.McCulloch, J.S.G.2015-07-162015-07-161957Glover, J., McCulloch, J.S.G. (1957) East African Agricultural And Forestry Journal, 84 (360), 172-175. https://doi.org/10.1002/qj.497084360110012-8325https://kalroerepository.kalro.org/handle/0/4762The variation with latitude of the regression parameters a and b in the conventional equation of Ångström type Q/QA=a+bn/N between total solar radiation on a horizontal surface (Q) and hours of bright sunshine (n) has been examined. It has been shown that the slope of the relationship b is effectively constant, while the threshold value a is a function of latitude. An empirical relationship leading to the Angström equation at each latitude & over the range 0° 60° is derived and is shown to give values in reasonable accord with previous experience. It is Q/QA2.09 cos +0.52 n/N.enhttp://creativecommons.org/licenses/by/3.0/Journal ContributionSolar radiationLatitudeAtmosphereRadiationhttps://doi.org/10.1002/qj.49708436011