README

Included here are output files from NASA GSFC 2D chemistry-dynamics
model for supernova cosmic ray cases described in Thomas & Yelland 2023,
"Terrestrial Effects of Nearby Supernovae: Updated Modeling", ApJ in press;
preprint: https://arxiv.org/abs/2301.05757

Cases:
- SN at 10 pc at 100 yr
- SN at 20 pc at 100 yr
- SN at 50 pc at 1000 yr
- SN at 100 pc at 3000 yr

For cases at 20, 50, and 100 pc a newer version of the GSFC model
was used.  For 10 pc case an older version was used.  See referenced paper
for more details.

Also included is a control run used for comparison to 20, 50, and
100 pc cases, and a separate control run used for comparision to
10 pc case (since two different models are used).

All files are in netCDF format; this is a self-describing format,
so more detail on consituents, model grids, etc. can be found within.

For 20, 50, and 100 pc cases, files include:
- "specout" files that have model constituent values at altitude,
latitude, and time points.
- "colden" files that have column density values for select consitituents,
such as ozone, at latitude and time points.

For 10 pc case only column density data is included.  Full data may be
requested.

For questions contact brian.thomas@washburn.edu