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Model of auroral and airglow emissions

Project Description

NOTE:New Modern Fortran GLOW is being built-up at with Python, Matlab, or MPI.


Stan Solomon’s GLOW Auroral model – now in Python!

Fortran author:Stan Solomon
Python API author:
 Michael Hirsch


If you don’t already have Numpy:

pip install numpy


pip install -e .


Self-test f2py

This self-test should give zero errors. This tests the Fortran code from Python.:

pytest -v

volume emission rate plots

To produce the plots seen at the Github site:


with options including:

-t, --simtime time of simulation (ending in Z for UTC)
-c, --latlon geographic coordinate (lat,lon) [degrees]
-q, --flux total flux

with the volume emission rate and intermediate processes modeled for the given primary electron precipitation input. You can make this more generally useful as eigenprofiles in the next section.

production/loss rate eigenprofiles

This requires two steps:

  1. Generate unit input differential number flux vs. energy
  2. Compute ionospheric energy deposition and hence production/loss rates for the modeled kinetic chemistries (12 in total)

This is handled by the script gridaurora/

Matlab access to Glow

Matlab can use Glow via the Python interface, as in the example glow.m.

Appendix (Not necessary for the typical user)

Download the GLOW v0.973 source code from Stan Solomon

Stan’s team has released GLOW v0.98 using modern Fortran, but here’s the original.

wget -r -np -nc -nH --cut-dirs=4 --random-wait --wait 1 -R "index.html*"

Download Stan’s copy of IRI files

Stan tweaked IRI90 slightly, here’s the copy he uses.

wget -r -np -nc -nH --cut-dirs=3 --random-wait --wait 1 -R "index.html*"

compile the Fortran code by itself

The Fortran program used by itself spits out a lot of text as its output:

cd bin
cmake ../fortran

Fortran self-test

Auroral example

./auroraexample < > aurtest.dat

High energy example

./hexexample < > hextest.dat


original Fortran code in directory fortran/ as obtained from “This software is part of the GLOW model. Use is governed by the Open Source Academic Research License Agreement contained in the file glowlicense.txt.”

Python code and modifications to original Fortran code: GNU Affero GPLv3+

Release History

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Source None Mar 9, 2018

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