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The Integrated Science Investigations of the Sun (IS$\odot$IS) instrumentsuite includes two Energetic Particle instruments: EPI-Hi, designed to measureions from ~1-200 MeV/nuc, and EPI-Lo, designed to measure ions from ~20 keV/nucto ~15 MeV/nuc. We present an analysis of eight energetic proton eventsobserved across the energy range of both instruments during PSP's first twoorbits in order to examine their combined energy spectra. Backgroundcorrections are applied to help resolve spectral breaks between the twoinstruments and are shown to be effective. In doing so we demonstrate that,even in the early stages of calibration, IS$\odot$IS is capable of producingreliable spectral observations across broad energy ranges. In addition tomaking groundbreaking measurements very near the Sun, IS$\odot$IS alsocharacterizes energetic particle populations over a range of heliocentricdistances inside 1 au. During the first two orbits, IS$\odot$IS observedenergetic particle events from a single corotating interaction region (CIR) atthree different distances from the Sun. The events are separated by twoCarrington rotations and just 0.11 au in distance, however the relationshipshown between proton intensities and proximity of the spacecraft to the sourceregion shows evidence of the importance of transport effects on observations ofenergetic particles from CIRs. Future IS$\odot$IS observations of similarevents over larger distances will help disentangle the effects of CIR-relatedacceleration and transport. We apply similar spectral analyses to the remainingfive events, including four that are likely related to stream interactionregions (SIRs) and one solar energetic particle (SEP) event.

Energetic Particle Observations from Parker Solar Probe using Combined Energy Spectra from the IS$\odot$IS Instrument Suite