Relation Between Sunspot Number and the Ionospheric Index IF2
Abstract
A plot of the relationship (IF)12/R12. for each month of the period 1942-1967 exhibits a hysteresis characteristic in addition to a systematic change from one solar cycle to the next. A relationship based on all these data is proposed and a means is suggested of fitting this expression to the particular "half"-cycle of mterest. In this way a conversion of parameter from R to IF2 may be made, with all the attendant advantages of the use of the latter index, in expressions relating R to ionospheric behavior based on the measured results of a particular period.
- Publication:
-
Radio Science
- Pub Date:
- November 1968
- DOI:
- 10.1002/rds19683111109
- Bibcode:
- 1968RaSc....3.1109M