Authors: Alexander Shane (University of Michigan), Lulu Zhao (University of Michigan), Igor Sokolov (University of Michigan), Weihao Liu (University of Michigan)

We present a SEP transport model: Particle ARizona MIchigan Solver on Advected Nodes (PARMISAN). This code solves the Parker transport equation by solving the corresponding stochastic differential equations using a Lagrangian coordinate system along magnetic fieldlines. This allows for fast computation of SEP fluxes at specific bodies in the solar system. We present a full description of the model along with validation of the model’s ability to properly model diffusive shock acceleration and transport.