[PEM12-P19] Climatological features of the upper atmosphere reproduced by a revised version of a whole atmosphere-ionosphere coupled model GAIA
Keywords:space weather, whole atmosphere, ionosphere, simulation, thermosphere, assimilation
So far, for the purpose of its validation, we have compared climatological features of thermosphere and ionosphere reproduced by GAIA with those from ionospheric observation and observation-based empirical models. The comparison indicates that the model and observations are generally in good agreements, but in some condition such as at solar maximum there are significant disagreements in the ionospheric electron density distribution. In order to improve the accuracy of the model, we have made several updates such as ion chemical processes, energetics, parameterization, and so on. We also have introduced magnetospheric effects into the model, such as electrodynamics coupling with magnetosphere and particle precipitation. In this presentation, we discuss how the upper atmospheric model can improve its accuracy and how they can be validated.