Variability of foF2 in Tucuman for high and low solar activity and comparison with the IRI-2016 model

LÓPEZ, JORGELINA LUISA; GONZÁLEZ, GILDA DE LOURDES

Buenos Aires

Workshop; COLAGE XI; 2018

In this work, the variability of foF2 in Tucuman (26.9 S, 294.6 E, lat Geomagnetic15.5 S) is study for a year of low solar activity (2009) and one of high solar activity(2016). The data was measured with the ionosonde AIS-INGV and the parameters used inthe analysis are median, upper and lower quartiles. In addition, the foF2 values are comparedwith those estimated by the International Reference Ionosphere (IRI) - 2016 model. It is foundthat: a) the average value of foF2 is higher for high solar activity, b) the variability is greaterduring low solar activity than during high solar activity and c) the variability is greater duringthe night than during the day. d) In general, between 5 LT and 16 LT, IRI-2016 overestimatesfoF2 for both high and low solar activity.