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| Author | : R. D. Sharma |
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| Total Pages | : 0 |
| Release | : 1989 |
| Genre | : Atmospheric physics |
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The Strategic High-Altitude Radiance Code (SHARC) is a new computer code that calculates atmospheric radiation and transmittance for paths from 60 to 300 km altitude in the 2-40 microns spectral region. It models radiation due to NLTE (Non-Local Thermodynamic Equilibrium) molecular emissions. This initial version of SHARC includes the five strongest IR radiators, NO, CO, H 2 O, O3 and CO2. This report describes the code and models used to calculate the NLTE molecular populations and the resulting atmospheric radiance. The SHARC Manual is reproduced in the appendix.
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| Total Pages | : 226 |
| Release | : 1989 |
| Genre | : Atmosphere radiation |
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| Author | : R. D. Sharma |
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| Total Pages | : 228 |
| Release | : 1989 |
| Genre | : Atmospheric physics |
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The Strategic High-Altitude Radiance Code (SHARC) is a new computer code that calculates atmospheric radiation and transmittance for paths from 60 to 300 km altitude in the 2-40 microns spectral region. It models radiation due to NLTE (Non-Local Thermodynamic Equilibrium) molecular emissions. This initial version of SHARC includes the five strongest IR radiators, NO, CO, H 2 O, O3 and CO2. This report describes the code and models used to calculate the NLTE molecular populations and the resulting atmospheric radiance. The SHARC Manual is reproduced in the appendix.
| Author | : R. D. Sharma |
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| Total Pages | : 190 |
| Release | : 1991 |
| Genre | : Atmospheric physics |
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| Author | : Ramesh Sharma |
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| Total Pages | : 14 |
| Release | : 1990 |
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The Strategic High-Altitude Radiance Code (SHARC) is a new computer code that calculates atmospheric radiation in the mesosphere and thermosphere. The initial version, SHARC-1, is available for distribution. This talk discusses the capabilities of this code and describes the new auroral model which will be incorporated in the next version. SHARC calculates radiance and transmittance for paths from 60 to 300 km altitude in the 2-40 microns spectral region. It models radiation due to NLTE (Non-Local Thermodynamic Equilibrium) molecular emissions which are the dominant sources at these altitudes. Keywords: Infrared radiation. (kr).
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| Total Pages | : 138 |
| Release | : 1996 |
| Genre | : Atmospheric radiation |
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| Total Pages | : 130 |
| Release | : 1990 |
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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.
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| Total Pages | : 0 |
| Release | : 1997 |
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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.
| Author | : R. L. Sundberg |
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| Total Pages | : 175 |
| Release | : 1989 |
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This report describes how to implement and use the Strategic High-Altitude Radiance Code (SHARC). SHARC calculates atmospheric radiation for paths from 60 to 300 km altitude in the 2-40 micron spectral region. It models radiation due to NLTE (Non-Local Thermodynamic Equilibrium) molecular emissions which are the dominant sources at these altitudes. This initial version of SHARC includes the five strongest IR radiators, CO2, NO, O3, H20, and CO. The code is available on magnetic tape and can be obtained by written request to AFGL/OPB. Keywords: Carbon dioxide; Carbon monoxide; Water vapor; Nitrogen monoxide; Ozone; Mesosphere; Thermosphere; Atmospheric transmittance; Infrared radiation. (JHD).
