Chapter 3 Calculation of ground solar radiation Q0=(Io·sin(ho)(1+f·m) For clear sky f=a+b·ln(1+e a=0.183(p/p0);b=0.0542+0.0598(p/p0); e--vapor pressure, p, po--alr pressure For possible radiation: f=0.5-a·exp(b·e) a=0.426,b=-0.0492,Nov.-Apr a=0.380,b=0.0194,May-Oct. Assessment of Climate/Change Impacts 22of76Chapter 3 Assessment of Climate/Change Impacts 22 of 76 Calculation of Ground Solar Radiation Qo=(Io ·sin(ho))/(1+f · m) For clear sky: f=a+b ·ln(1+e) a=0.183(p/po); b=0.0542+0.0598(p/po); e—vapor pressure; p, po—air pressure For possible radiation: f=0.5 - a ·exp(b ·e) a=0.426, b= -0.0492, Nov.-Apr. a=0.380, b= -0.0194, May-Oct