AIRCHEM: A Computational Technique for Modeling the Chemistry of the Atmosphere

Deionization processes thought to describe the real-time concentrations of ion and neutral constituents in the ionized stratosphere and mesosphere can be modeled numerically by a number of techniques of varying complexity and efficiency. One very efficient technique for complex cases is the AIRCHEM...

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Bibliographic Details
Main Authors: Lortie,Edna L, Kregel ,Mark D, Niles ,Franklin E
Format: Report
Language:English
Subjects:
AIRCHEM computer program
ATMOSPHERE MODELS
ATMOSPHERIC CHEMISTRY
Atmospheric Physics
COMPUTATIONS
Computer Programming and Software
COMPUTER PROGRAMS
CONCENTRATION(CHEMISTRY)
DEIONIZATION
DIFFERENTIAL EQUATIONS
FORTRAN
MACHINE CODING
MATHEMATICAL MODELS
MESOSPHERE
PHOTOCHEMICAL REACTIONS
PHOTOIONIZATION
REAL TIME
STRATOSPHERE
SUBROUTINES
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Summary:Deionization processes thought to describe the real-time concentrations of ion and neutral constituents in the ionized stratosphere and mesosphere can be modeled numerically by a number of techniques of varying complexity and efficiency. One very efficient technique for complex cases is the AIRCHEM computer program. The AIRCHEM program utilizes the K-method for solving the ordinary differential equations which arise from the mathematical description of atmospheric deionization processes, many of which are characterized by exceedingly short time constants. This report serves to give the mathematical description of atmospheric deionization as modeled by AIRCHEM and also serves as a user's manual for those interested in using the program. Included is a complete FORTRAN listing of the AIRCHEM program along with sample input and the corresponding output from a sample run. (Author)