The role of the electron temperature on ion loss from Mars

This paper reports the results of hybrid simulations of the Mars-solar wind interaction. The focus is on the role of the low altitude (<500km) electron temperature profile on the ionospheric chemistry, dynamics, and loss rates of oxygen ions. It is found that the loss rates of O+ and O-2(+) from the Martian ionosphere are changed depending on the electron temperature profile being used. Test simulations show that diamagnetic effects (specifically the ambipolar electric field) are an important part of the solar wind interaction with Mars. Plain Language Summary The research reported in this paper examines the role of the ionospheric electron temperature in the dynamic interaction of the solar wind with the Martian ionosphere. The scientific question being addressed is the amount of ionosphere Mars is losing to the solar wind and what are the key parameters that control that loss. This paper examines the control the ionospheric electron temperature exerts on the ion escape process. The research is performed by three dimensional computer simulation of the solar wind interaction with the Martian atmosphere and ionosphere.