Status of the Next-Generation OpenGGCM Model

Abstract:

OpenGGCM is a global coupled magnetosphere – ionosphere – thermosphere model that has been in use for more than two decades, and which has since 2001 been available as a community model at the Community Coordinated Modeling Center (ccmc.gsfc.nasa.gov) for model runs on demand. As new versions of the OpenGGCM are periodically released, here we will give an update on the features of the next generation, modularized, OpenGGCM model.

New features of the model include: (1) more options for the MHD solver, including a modern van-Leer constrained-transport solver, (2) a Generalized Ohm's Law including the Hall term, (3) new physics models, in particular a 5-moment and 10-moment multi-fluid plasma description, (4) block-structured adaptive mesh refinement with support for staggered electric and magnetic fields for the constrained transport method, and (5) computational enhancements like command-line selectable modules and sub-models, parallel I/O, and checkpointing.