METHOD OF DETERMINING HAIL COVERAGE WITH AN AIRBORNE INFRARED THERMOMETER

Abstract

The fraction of a given area of ground that is covered by hail can be determined by using an airborne infrared thermometer. If the ambient ground temperature and the hail-covered ground temperature are measured with the same thermometer, and the surface of the hail is assumed to be at a temperature of 0C, then a simplified equation enables the determination of fractional coverage with a maximum error of 0.03 in all expected temperature regimes. Variations in the wavelength passband of the radiation thermometer and in the emissances (emissivities) of the surfaces are taken into account in the equation.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1970
Accession Number
AD0708548

Entities

People

  • Albert R. Tebo

Organizations

  • United States Army Communications-Electronics Command

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Airborne
  • Aircrafts
  • Atmospheric Physics
  • Atmospheric Windows
  • Bodies Of Water
  • Cloud Cover
  • Clouds
  • Emissivity
  • Equations
  • Micrometers
  • New Jersey
  • Radiance
  • Radiation
  • Radiometers
  • Surface Temperature
  • Thermometers
  • United States

Fields of Study

  • Environmental science

Readers

  • Atmospheric Remote Sensing.
  • Thermal Physics or Thermal Science.