Model of auroral and airglow emissions
|NOTE:||New Modern Fortran GLOW is being built-up at https://github.com/scivision/GLOW with Python, Matlab, or MPI.|
Stan Solomon’s GLOW Auroral model – now in Python!
|Fortran author:||Stan Solomon|
|Python API author:|
- Appendix (Not necessary for the typical user)
If you don’t already have Numpy:
pip install numpy
- Linux / BSD / Windows Subsystem for Linux: apt install gfortran
- Mac: brew install gcc
pip install -e .
This self-test should give zero errors. This tests the Fortran code from Python.:
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.
This requires two steps:
- Generate unit input differential number flux vs. energy
- Compute ionospheric energy deposition and hence production/loss rates for the modeled kinetic chemistries (12 in total)
This is handled by the script gridaurora/MakeIonoEigenprofile.py
Matlab can use Glow via the Python interface, as in the example glow.m.
(Thanks to Stephen Kaeppler to pointing these out)
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*" http://download.hao.ucar.edu/pub/stans/glow/v0.973/
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*" http://download.hao.ucar.edu/pub/stans/iri/
The Fortran program used by itself spits out a lot of text as its output:
cd bin cmake ../fortran make
./auroraexample < aurexample.in > aurtest.dat
High energy example
./hexexample < hexexample.in > hextest.dat
original Fortran code in directory fortran/ as obtained from http://download.hao.ucar.edu/pub/stans/glow/: “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+