FASCODE: An update and applications in atmospheric remote sensing
- Air Force Phillips Lab., Hanscom AFB, MA (United States)
The Air Force has long maintained an ``exact`` accelerated line-by-line (LBL) radiative transfer model, the Fast Atmospheric Signature CODE (FASCODE), appropriate for applications in both the laboratory and any arbitrary line-of-sight in the atmosphere. The first version was released in 1978 with optimized Voigt line shape decomposition and layering algorithms; it had a speed advantage of about 100 over existing fixed frequency LBL codes. The current version of FASCODE, FASCOD3, is fully compatible with the HITRAN92 database, including access to the temperature-dependent cross sections for heavy molecules (e.g. chloro-fluorocarbons/CFCs, etc.). Some new features of FASCOD3 are: line coupling algorithms for both 15 micron CO{sub 2} and the mm lines of O{sub 2}; non-local thermodynamic equilibrium models; updated H{sub 2}O continuum; multiple scattering capability; and laser options for lidar modeling applications. Because of its speed over other LBL codes and extensive validations against measurements, FASCOD3 is increasingly being used as a high resolution remote sensing data analysis tool from microwave and infrared (IR) to ultraviolet (UV) spectral ranges.
- OSTI ID:
- 227981
- Report Number(s):
- CONF-940723-; ISBN 0-8194-1590-1; TRN: IM9622%%258
- Resource Relation:
- Conference: Annual meeting of the Society of Photo-Optical Instrumentation Engineers, San Diego, CA (United States), 24-29 Jul 1994; Other Information: PBD: 1994; Related Information: Is Part Of Optical spectroscopic techniques and instrumentation for atmospheric and space research; Wang, J.; Hays, P.B. [eds.]; PB: 662 p.; Proceedings/SPIE, Volume 2266
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 MATHEMATICS
COMPUTERS
INFORMATION SCIENCE
MANAGEMENT
LAW
MISCELLANEOUS
RADIATION TRANSPORT
F CODES
EARTH ATMOSPHERE
GREENHOUSE GASES
REMOTE SENSING
CHLOROFLUOROCARBONS
TRACE AMOUNTS
POLLUTANTS
OZONE
NITROGEN DIOXIDE
SULFUR DIOXIDE
MODIFICATIONS
COMPUTERIZED SIMULATION
DATA