Comparison of TEC Prediction Methods for High Latitudes with GIM Maps

Abstract

Some publications have shown that, despite the limitation of the orbits of the navigation satellites used to determine the total electron content TEC, in terms of latitude, the usage of TEC in high latitudes has great prospects. In this sense, it is of interest to test models of the ionosphere, which provide a long-term prediction, and short-term forecast methods, based on the history of TEC measurements by one receiver. In this work, according to the reference mid-latitude station Juliusruh and high-latitude station Longyearbyen for 2015, the models IRI-Plas and NeQuick are tested using global maps of JPL, UPC, and a version of the short-term prediction method a day ahead is proposed. It is shown that the IRI-Plas model provides a better fit with the experimental data than the NeQuick model. The possibility of developing a short-term prediction method that at high latitudes gives results not worse than the forecast for middle latitudes is confirmed.