Data files for submission 'Imaging the perpendicular plasma dynamics driving a discrete auroral arc' by C. C. Chaston to the Journal of Geophysical Research - Space Physics, August 2025

The data files archived here provide the processed measurements used to examine plasma dynamics above a discrete auroral arc as captured from the Reimei spacecraft (JAXA | INnovative-technology Demonstration Experiment "REIMEI" (INDEX)).The first file type (data_for_stream_function_20070807_XXX.sav) includes measurements of optical intensities and flow speeds within the field of view of the camera as described in the file Contents_data_for_stream_function_20070807_XXX.pdf.The 2nd type (Contents_pot_20070807_XXX_phi_A_soln.sav) contains solutions from Poisson's equation for the associated vector and scalar potentials with format described in the file Contents_pot_20070807_XXX_phi_A_soln.pdf.The data files are in Interactive Data Language (IDL) (nv5geospatialsoftware.com) save file format as described in the file descriptions along with the method for extraction.The software is in the form of IDL programs with the primary code being get_streamlines_obs_3.pro. After compiling these using the IDL .run command the text file 'Application.txt' shows how to execute the program for one of the data files provided above.