Articles | Volume 15, issue 20
Geosci. Model Dev., 15, 7903–7912, 2022
https://doi.org/10.5194/gmd-15-7903-2022
Geosci. Model Dev., 15, 7903–7912, 2022
https://doi.org/10.5194/gmd-15-7903-2022
Development and technical paper
27 Oct 2022
Development and technical paper | 27 Oct 2022

Spatial filtering in a 6D hybrid-Vlasov scheme to alleviate adaptive mesh refinement artifacts: a case study with Vlasiator (versions 5.0, 5.1, and 5.2.1)

Konstantinos Papadakis et al.

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Short summary
Vlasiator is a plasma simulation code that simulates the entire near-Earth space at a global scale. As 6D simulations require enormous amounts of computational resources, Vlasiator uses adaptive mesh refinement (AMR) to lighten the computational burden. However, due to Vlasiator’s grid topology, AMR simulations suffer from grid aliasing artifacts that affect the global results. In this work, we present and evaluate the performance of a mechanism for alleviating those artifacts.