Description of the strategic high-altitude atmospheric radiation code (SHARC). Scientific report, Jan 89-Oct 90

Technical Report · Tue Nov 27 04:00:00 EST 1990

OSTI ID:5222208

Duff, J W; Sundberg, R L; Gruninger, J H; Bernstein, L S; Robertson, D C

The report describes an upgraded version of the strategic high-altitude radiance code, SHARC-2. SHARC calculates atmospheric radiance and transmittance over the 2-40 micrometer spectral region for arbitrary paths within 50 and 300 km altitude, including space viewing. It models radiation due to NLTE (Non-Local Thermodynamic Equilibrium) molecular emissions which are the dominant sources at these altitudes. This new version, which is now ready for distribution, has been upgraded to include a fully integrated auroral model with time-dependent chemistry, extention down to 50 km altitude, and radiation from the minor isotopes of CO2. In addition, there have been numerous internal upgrades to the various modules. These include a Voigt lineshape for the radiative excitation module; embedding of the auroral region into a quiescent atmosphere; and improvements in the radiation transport algorithms.

• Research Organization: Spectral Sciences, Inc., Burlington, MA (United States)
• OSTI ID: 5222208
• Report Number(s): AD-A-237089/8/XAB; SSI-TR--176; CNN: F19628-87-C-0130
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALGORITHMS
ALTITUDE
AURORAE
AURORAL ZONES
CHEMISTRY
COMPUTER CODES
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
EQUILIBRIUM
EXCITATION
INFRARED RADIATION
LIGHT TRANSMISSION
LTE
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MESOSPHERE
RADIATION TRANSPORT
RADIATIONS
S CODES
TIME DEPENDENCE