CHANGELOG.rst
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GLOW Release Notes
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:Version: GLOW v. 0.973
:Author: Stan Solomon
:Email: stans@ucar.edu
:Date: 4/05, 3/15
:License: See glowlicense.txt for the Open Source Academic Research License Agreement
Version 0.973 is an incremental release to GLOW, mostly just the example drivers:
- updates example drivers to MSIS-2K
- adds NOEM empirical nitric oxide model, based on SNOE data, to example drivers
- some cleanup of example drivers
- fixs ssflux so it only reads file on first call (or if ISCALE changes).
See glow.rst for more details
New features:
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- Relativistic correction to electron impact cross sections included
- Maxwellian or monoenergetic fluxes generated by MAXT
- Possible to use any solar grid by changing only input files
- Photoabsorption and photoionization cross sections supplied in files
- SSFLUX completely re-written:
- Model parameters supplied in files
- Default is ~1 nm grid (5 nm in FUV)
- Hinteregger model still there (ISCALE=0)
- EUVAC also available (ISCALE=1)
- User grid and input supported by changing input file and LMAX (ISCALE=2)
- Common block CGLOW is unchanged
- Should facilitate upgrade path for existing programs
- But there are now several obsolete artifacts
Issues addressed in this release:
=================================
- Fixed two problems with Auger electron production
- Fixed some small bugs in O(1S) calculation
- Adjusted N(2D)+O rate coefficient to Fell et al. value (6.9e-13)
- Adjusted C III on N2 cross section to fix O2 ionization rate problem
- Removed various artifacts, including EAURI
- Removed unnecessary N(2D) initial guess (now just set to zero)
- Now use standard energy and altitude grid in both day and aurora examples
Known problems:
===============
- X-rays shortward of 18 A need to be re-examined and updated.
- Magnetic field (GEOMAG, FIELDM) is out of date, really need to update to IGRF, but at the resolutions typical here should be OK for now.
- Temporary Y2K fix to SUNCOR. Should be fine for 1950-2050, but really need to change from yyddd to yyyyddd date format, which will enable range of validity to extend from 1900-2100. (This only affects SZA.)
- O(1S) needs to be re-evaluated (still).
- O(1S) from O2 dissociation (BSO2) is currently hardwired - only works with LMAX=123 (although changes shortward of 800 A are OK).
- IRI should be updated.
Long term:
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- Would like to move all cross sections to file input, and utilize full specification of N2 triplet and singlet states.
- File handling - currently required to put input data files on current working directory - could use environment variables or directory argument to make this more general - any ideas?
- Eventually would like to get rid of common block CGLOW, and go with a more modern approach.