Condensed Storage of Diffusion Equation Solutions for Atmospheric Density Model Computations

Abstract

It is shown that all neutral thermospheric component densities in diffusive equilibrium can be derived from a single function of height. This is used to permit considerable savings in storage of Jacchia 1977 model densities compared to storing the solution for each component, which requires use of external random access files. The single solution can be built into the computer code, making it more transportable to different computers. A subroutine has been developed implementing this method, including the latest results for atomic nitrogen and the non-diffusive equilibrium solution for atomic hydrogen.

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Document Details

Document Type
Technical Report
Publication Date
Jan 25, 1980
Accession Number
ADA086868

Entities

People

  • James N. Bass

Tags

DTIC Thesaurus Topics

  • Air Force
  • Atmospheric Density
  • Classification
  • Computers
  • Diffusion
  • Diffusion Coefficient
  • Equations
  • Hydrogen
  • Low Altitude
  • Mass Spectrometers
  • Molecular Weight
  • Nitrogen
  • Observatories
  • Procedures (Computers)
  • Sea Level
  • Security
  • Thermal Diffusion

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Computer Science.
  • Plasma Physics.