Non-Equilibrium Molecular Emission and Scattering Intensity Subroutine (NEMESIS) Volume 1

Abstract

This interim technical report describes the initial development of the SHARC radiative transfer subroutine NEMESIS (Non-Equilibrium Molecular Emission and Scattering Intensity Subroutine). NEMESIS computes the enhancement of upper atmospheric molecular excited state populations due to radiative trapping. The physical processes considered include external illumination by the sun and upwelling earthshine, collisional excitation and de-excitation, radiative decay and multiple emission-absorption. A Monte Carlo procedure for simulating the multiple emission-absorption process is developed. The procedure is validated by comparison to exact solutions for the closely related cloud scattering problem. Mesosphere, Radiation, Infrared, Scattering, Monte carlo, Atmospheric, Computer programs.

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Document Details

Document Type
Technical Report
Publication Date
Apr 05, 1988
Accession Number
ADA199295

Entities

People

  • Lawrence S. Bernstein

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Absorption
  • Absorption Cross Sections
  • Air Force
  • Computer Programs
  • Demography
  • Earthshine
  • Excitation
  • Geometry
  • High Altitude
  • Light Sources
  • Monte Carlo Method
  • Radiation
  • Radiative Transfer
  • Scattering
  • Simulations
  • Steady State
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Computer Science.
  • Solar Physics
  • Spectroscopy.