THE APPARENT DEPENDENCE OF TERRESTRIAL SCINTILLATION INTENSITY UPON ATMOSPHERIC HUMIDITY.

Abstract

Observations indicate a direct relationship between terrestrial scintillation intensity and relative humidity (RH). A developed theory supplementing air-refractive and diffractive treatments attributes this increased modulation intensity to water droplets formed either gradually or instantaneously at 70% RH or higher. Modulation at visible wavelengths is attributed to scattering, while spectral absorption causes far-infrared-wavelength modulation. The report contains limited experimental substantiation of this theory. A comparative discussion of atmosphere opacity at far-infrared wavelengths (10-micron region) under high- and low-humidity conditions is presented. An empirical equation for determination of the 'scintillation intensity index' is presented, with graphical presentations of conclusions. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1965
Accession Number
AD0630117

Entities

People

  • Hugh R. Carlon

Organizations

  • Edgewood Chemical Biological Center

Tags

DTIC Thesaurus Topics

  • Absorption
  • Atmospheres
  • Equations
  • Humidity
  • Intensity
  • Low Humidity
  • Modulation
  • Observation
  • Scattering
  • Scintillation

Fields of Study

  • Physics

Readers

  • Astronomy and Astrophysics.
  • Optical Physics and Photonics.
  • Systems Analysis and Design