SHARC, A Comprehensive Non-Equilibrium Infrared Radiation Model for the Upper Atmosphere.

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Abstract:

A new, first-principles computer model, SHARC, has been developed by the Air Force for the rapid and accurate calculation of non-LTE upper atmospheric infrared radiance and transmittance spectra with a resolution of better than 1cm. Comprehensive coverage of the 2 micrometers to 40 micrometers 250cm to 5,000cm wavelength region is provided for arbitrary lines of sight in the 50 - 300 km altitude range, accounting for the detailed production, loss, and energy transfer processes among the molecular vibrational states. Auroral production and excitation of CO2, NO, and NO are included in addition to quiescent atmospheric processes. Calculated vibrational temperatures are found to be similar to results from other non-LTE codes, and SHARCs equivalent-width spectral algorithm provides very good agreement with much more time-consuming exact line-by-line methods. MM

Author(s):
Sundberg, R. L. ; Duff, J. W. ; Bernstein, L. S. ; Gruninger, J. H. ; Matthew, M. W.
Author Organization(s):
NICHOLS RESEARCH CORP DAYTON OH
Descriptive Note:
Technical rept.,
Pagination:
0033

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
SSI-TR-228, PL*-TR-93-2135
Contract/Grant Number(s):
F19628-91-C-0083
Task Number(s):
13
Project Number(s):
S321
Monitor Series:
TR-93-2135, PL/HANSCOM
 Subject Terms
Joint Capability Areas:
JCA_6.3.3_Spectrum Management; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_6_Net Centric; JCA_1.4_Force Support; JCA_1.4.1_Force Health Protection; JCA_6.3_Net Management; JCA_1.3_Human Capital Management; JCA_1_Force Support; JCA_1.2.7_Experimentation; JCA_1.3.2_Personnel Management; JCA_6.4.1_Secure Information Exchange; JCA_6.2.1_Information Sharing; JCA_6.2.2_Computing Services; JCA_JCA_4.1.2_Sustain the Force; JCA_4.1_Deployment and Distribution; JCA_5_Command and Control; JCA_6.4_Information Assurance; JCA_8_Building Partnerships
Modernization Areas:
Quantum Science and Computing; Space
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*INFRARED RADIATION, *UPPER ATMOSPHERE, *ATMOSPHERIC PHYSICS, VIBRATION, AIR FORCE, MOLECULAR VIBRATION, MOLECULAR STATES, ATMOSPHERIC TEMPERATURE, ACCURACY, ENERGY TRANSFER, TRANSMITTANCE, SPECTRA, RADIANCE, AURORAE
Field(s)/Group(s):
Atmospheric Physics, Optics
Keyword(s):
SHARC COMPUTER PROGRAM, PE63215C, WUPLS32113AA
Report Date:
1993 Jun 21