Empirical polar ion loss model --- Does it have the influence on air evolution ? ---

Abstract

In recent years, some satellite observations turned out that suprathermal ion loss flux from polar ionosphere is of similar order as jeans escape flux.For studying the role of atmosphere loss that occurs in the region of open magnetic fields,we have attempted to construct an empirical model which estimates ion loss fluxfrom polar ionosphere. In this study, we show verification of the validity of the model and the amount of ion loss in the past, and investigate the effect on the atmospheric evolution.