Description of SHARC-2, the Strategic High-Altitude Atmospheric Radiance Code.
Abstract
This report describes an upgraded version of the Strategic High- Altitude Radiance Code, SHARC-2. SHARC calculates atmospheric radiation and transmission over the 2-40 micrometers 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 has been upgraded to include a fully integrated auroral model with time-dependent chemistry, extension 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; multiple integration options for the chemical kinetics module that include industry- standard subroutines; an OH capability; embedding of the auroral region into a quiescent atmosphere; and improvements in the radiation transport algorithms.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 22, 1991
- Accession Number
- ADA239008
Entities
People
- J. H. Gruninger
- J. W. Duff
- L. S. Bernstein
- R. L. Sundberg
- Rajesh Sharma
Organizations
- Phillips Laboratory