Skip to content
This repository was archived by the owner on Dec 9, 2019. It is now read-only.

CHANGELOG.rst

Latest commit

 

History

History
58 lines (51 loc) · 2.87 KB

CHANGELOG.rst

File metadata and controls

58 lines (51 loc) · 2.87 KB
Raw

GLOW Release Notes

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:

  • 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  • Magnetic field (GEOMAG, FIELDM) is out of date, really need to update to IGRF, but at the resolutions typical here should be OK for now.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:

  • 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.