Prediction of ionospheric conditions for antipodal stations

Abstract

Predicted values of F2 critical frequencies for all hours of the day for Watheroo, Western Australia, and for Baton Rouge, Louisiana, were compared with observed values. It was found that predicted values for Baton Rouge, based on data from Watheroo, agreed with observe values almost as well as those predicted from Baton Rouge values. The two stations in questions are located at almost antipodal points. Similar tests conducted for other stations in corresponding geographical latitudes, north or south, but not antipodally located showed poorer agreement. It is concluded from this that data observed at any given station may be applied with consideration assurance to antipodal points for which no data are available.