Labels:book | bulletin board | lodestone | reckoner | sky OCR: A key feature of the proposed f.F2 model is that seasonal and geographical vari- ations of the predicted arise only from the corresponding variati ions in the midday solar zenith angle marked con rast to the customary procedure Jo numerically mapping foF2 collected by fitting from world appropriate mathematical vertical functions sounders (ref 14 observed 15 and ionospheric 16. sound Furthermore, ling data by wide net of making simple analytical approximations to the dynamic solutions of the model (ie the diurnal response function), we end up with' simple closed-form expression for function of midday solar zenith angle sunspot number, and time relative to local sunrise and sunset By appending simple approximations for the M factor (ie MUF/fF and for solar zenith angle as a function of loca ...
