Accession Number : ADA322471

Title :   Atmospheric Ultraviolet Radiance Integrated Code (AURIC): Airglow Portion Providing Dayglow and Nightglow Spectral Radiances from 100 to 900 nm.

Descriptive Note : Final rept. 30 Dec 91-30 Mar 96,

Corporate Author : COMPUTATIONAL PHYSICS INC FAIRFAX VA

Personal Author(s) : Strickland, D. J. ; Majeed, T. ; Evans, J. S. ; Shen, P. M. ; Bishop, J. E.

PDF Url : ADA322471

Report Date : 27 JAN 1997

Pagination or Media Count : 92

Abstract : The work reported let to a suite of codes for characterizing dayglow and nightglow and for ingesting Rayleigh scattered radiances (solar and lunar) from MODTRAN. The key outputs are spectral radiances at satellite altitudes for any viewing angle. The wavelength range is from approximately 100 to approximately 900 nm and, for dayglow, contains all prominent band systems and lines, including HI 121.6 nm and OI 130.4 nm. Chemistry models are available for calculating a variety of ion and neutral densities under sunlit conditions and excitation rates at night for O atom recombination (lower thermosphere and upper thermosphere) and O(+) recombination (F region). AURIC was originally developed to provide the ballistic missile defense community with a tool for realistically characterizing terrestrial backgrounds from the far UV to the near IR on both the Earth's dayside and nightside. Recent enhancements make AURIC of interest to a wider community by enabling the user to conduct scientific studies in addition to predictions of optical backgrounds. Detailed investigations may be performed that relate emissions to composition for remote sensing purposes. Studies may also be undertaken of ion and neutral species with detailed examination of densities of these species as functions of background composition, solar EUV, cross sections, rate coefficients, etc. AURIC is easy to run through either a user-interface or direct submission of batch files. Furthermore, I/O files are formatted for easy inspection of their contents and numerous IDL procedures are available for graphical display of inputs and outputs. Contract deliverables include this report, two science papers, AURIC's rate coefficients, the software itself, and a user's manual.

Descriptors :   *AIRGLOW, *AERONOMY, COMPUTER PROGRAM DOCUMENTATION, COMPUTERIZED SIMULATION, SOFTWARE ENGINEERING, THERMOSPHERE, ULTRAVIOLET RADIATION, PHOTOCHEMICAL REACTIONS, INPUT OUTPUT PROCESSING, ELECTRON ENERGY, RAYLEIGH SCATTERING, RADIANCE, SOLAR RADIATION, COMPUTER FILES, F REGION, ION DENSITY, PHOTOELECTRONS, ULTRAVIOLET SPECTRA, SUNLIGHT.

Subject Categories : Atmospheric Physics
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE