15/09/2026
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GMF2 performs better than CCIR in reproducing ionosphere climatology across most of the conditions examined in the study.
The research compares three 2D models — GMF2, GMF2cor and CCIR — using ionosonde observations of foF2 and hmF2 under low and high solar activity.
The results show that GMF2 better reproduces both parameters during all months of low solar activity and in most cases under high solar activity. Based on this comparison, the authors recommend GMF2 as the default option for IRI and IRI-Plas, replacing the CCIR prediction.
Read the article → bit.ly/ag_9332