Users Manual For Sharc 3 Strategic High Altitude Radiance Code PDF Download

The Strategic High-Altitude Radiance Code, SHARC-4, calculates atmospheric radiance and transmission over a 1 - 40 micrometers spectral region for arbitrary lines of sight (LOS) between 30 and 300 km altitude. It models radiation due to non-local thermodynamic equilibrium (NLTE) molecular emissions, the dominant sources at these altitudes. This fourth release of SHARC has been upgraded to model atmospheric structure due to stochastic processes described by a temperature and density fluctuation model, and includes the ability to perform multiple LOS calculations during a single code execution. The radiance statistics are non-stationary and are dependent on sensor bandpass, location and field of view (FOV). Auxiliary atmospheric profile generator and slit function programs enhance the capabilities of the code. As in previous versions of the code, auroral regions can be embedded in quiescent atmospheres, the atmospheric terminator can be treated, and industry-standard kinetics and radiation transport modules have been employed. This manual outlines the scientific basis of the code, details steps for code installation and use as supplied, and indicates how the user may modify the supplied input files if desired.