COST Action ES0803
Open Access

Fig. 8.


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(a) Map obtained from foF2 measurements and (b) forecasting map for foF2 one hour in advance generated using the IFERM model on 11 September 1991 at 13:00 UT under disturbed geomagnetic conditions (ap(τ = 0.8) = 26.3; ap(τ = 0.9) = 27) (after Pietrella 2012).

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