Cross Validation of iPATH and SEPMOD

Authors: Clayton Allison (NASA JSC/SRAG/Leidos), Kathryn Whitman (NASA JSC/SRAG), Junxiang Hu (UAH), Janet Luhmann (UC Berkeley), Claudio Corti (NASA/CCMC), Gang Li (UAH)

Through the SEP Scoreboard initiative developed by NASA’s Community Coordinated Modeling Center (CCMC) and the Space Radiation Analysis Group (SRAG) many solar energetic particle (SEP) models are now running in real-time for operational use. This scene setting talk will discuss two of the models on the intensity scoreboard, the improved Particle Acceleration and Transport in the Heliosphere model (iPATH) and the Solar Energetic Particle MODel (SEPMOD). The models are cross validated against each other using the same input parameters, showing how their performance across a variety of metrics compares to both observations and each other. As both models output time profiles for selected energy channels of protons, the fluence spectra of each event can also be validated after fitting each model and the observed fluence to a Band (double powerlaw) function. The goal of this talk is to address one method of cross validation and discuss how validation feeds into the research to operations to research (R2O2R) pipeline.