SM043-05
How does planetary magnetic field impact on Ion escape rate?

Tuesday, 15 December 2020: 07:16
Virtual
Yingjuan Ma, University of California Los Angeles, Los Angeles, CA, United States, Christopher T Russell, University of California, Los Angeles, CA, United States, Gabor Toth, University of Michigan, Department of Climate and Space, Center for Space Environment Modeling, Ann Arbor, MI, United States, Andrew F Nagy, University of Michigan Ann Arbor, Ann Arbor, MI, United States and David Brain, Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States
Recorded Presentation
Abstract:
We use an advanced multi-fluid MHD model of Mars to examine the planetary magnetic field impact on the ion escape rate. The multi-fluid MHD model has been recently improved by solving an additional electron pressure equation [Ma et al., 2019], and is the first global model that enables a self-consistent calculation of both ion and electron temperatures and pressure gradient force terms. The improved model has also been validated with a MAVEN event study, and is found to match the best with corresponding MAVEN plasma observations as compared with previous versions of the code. To examine the effect of planetary magnetic field, we use the new model to run a total of ten simulation cases with identical solar wind parameters but different planetary dipole moments with surface equatorial field strengths ranging from 0 to 5000 nT. We also examine how different IMF orientations modulate the impact of planetary magnetic field on the ion escape rates.
<< Previous Abstract | Next Abstract >>