Fig. 18From: Swarm Thermal Ion Imager measurement performanceLeast-squares fits (blue surfaces) of EES Gaussian image model parameter \(z_{0}\) (Equation C.9) to the values determined from TII MCS (red points) as a function of ion ram speed and ion temperature. TII MCS simulations were carried out for three ion species spanning the masses of the IRI model ion compositionBack to article page