Assessment of solar activity and Earth's magnetic field effects over ionospheric conductivity variations using IRI and SUPIM models

BLAS F. DE HARO BARBAS; BRUNO S. ZOSSI; ANA G. ELIAS; MARTA ZOSSI DE ARTIGAS

Bangkok

Workshop; International Reference Ionosphere 2015 Workshop; 2015

COSPAR/URSI-IRI, King Mongkut?s Institute of Technology Ladkrabang (KMITL)

In the present work we analyzed the conductivity of the ionosphere which plays a critical role in magnetosphere-ionosphere and thermosphere-ionosphere coupling processes. To calculate the conductivity of ionosphere we used different models involved in the equations of Hall and Pedersen conductivities. The models were NRLMSIS-00, IGRF and to estimate ionospheric electron density (Ne) we used IRI2012 and SUPIM. Comparisons between the two models were made to analyze thecontributions that each generate. Solar EUV irradiance and Earth?s magnetic field are among the variables involved in these conductivities. This work shows the effect of variations of solar activity and Earth?s magnetic field over ionospheric conductivity. The expected consequences of the upper atmosphere cooling due to increasing greenhouse gases concentration is also discussed in comparison to both natural forcings here considered.