Renewable Energy, Vol.18, No.1, 15-23, 1999
Evaluation of solar radiation at JUST in Northern Jordan
Monthly averaged total daily global and direct incident solar radiation are presented. Maximum, averaged, and the minimum Values of both global and direct incident radiation are given over the measuring period 1990-1996. The global and direct incident radiation at noon hour are also presented. A mathematical model for maximum total daily GR is given as a function of the number of the month of the year. Two other mathematical regressions were also obtained for the monthly averaged total daily global radiation and for monthly averaged total daily direct incident solar radiation.