Lowthrm: A Thermal Fluence Code.

Abstract

A Fortran computer program LOWTERM is described for calculating nuclear thermal fluence incident upon a target area. Atmospheric transmissivity factors in the spectral region 0.25 to 28.5 microns are determined through use of the LOWTRAN5 computer code. The program provides a choice of six model atmospheres covering seasonal and latitudinal variations from sea level to 100 km, eight haze models, and accounts for molecular absorption, molecular scattering, and aerosol extinction. Atmospheric refraction, earth curvature effects, thermal scattering, and thermal ground reflection contributions are included. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1980
Accession Number
ADA083520

Entities

People

  • Chris R. Westbrook

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Altitude
  • Computer Programs
  • Computers
  • Dielectric Gases
  • Electromagnetic Radiation
  • Energy Bands
  • Geometry
  • Height Of Burst
  • Reflection
  • Refractive Index
  • Scattering
  • Sea Level
  • Thermal Radiation
  • Transmissivity
  • Water Vapor

Fields of Study

  • Physics

Readers

  • Atmospheric Remote Sensing.
  • Pulsed Power and Plasma Physics.
  • Space/Atmospheric Physics.