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This study examines the impact that solar activity has on model resultsduring geomagnetic quiet time for the ionosphere/thermosphere models: theCoupled Thermosphere Ionosphere Plasmasphere Electrodynamics Model (CTIPe) andthe Thermosphere-Ionosphere-Electrodynamics General Circulation Model(TIE-GCM). Using varying F10.7 flux values as a measurement of solar activity,the models were run over a two-day period with the constant parameters Kp= 2,n= 3 cm^3, and v= 400 km/s. Four F10.7 values (70, 110, 150, and 190) wereselected based off of the average F10.7 values for geomagnetic quiet daysacross the current solar cycle. Our analysis of the model results showed thatsolar activity has the greatest effect on TEC output and the least effect onhmF2 and O/N2 output. Overall, TIE-GCM output tends to be higher than CTIPe,however, inconsistent values across the two-day CTIPe v3.1 output suggests thatthis model needs a longer warm-up period. When visually compared againstobserved data, CTIPe v3.2 performs the best, although all models greatlyoverestimated values for TEC. Analyses of models during geomagnetic quiet timeare important in establishing a baseline which can be compared against stormdata. An example of this was completed at the end of the study, using stormdata obtained from Millstone Observatory on March 17, 2013. In this analysis,we found that TIE-GCM using the Weimer model to calculate the high-latitudeelectric potential provided more accurate results. Continued research in thisarea will be useful for understanding the impact of geomagnetic storms on thethermosphere/ionosphere.

Impact of Solar Activity on the Ionosphere/Thermosphere during Geomagnetic Quiet Time for CTIPe and TIE-GCM