Development and Calibration of the Forward Scatter Visibility Meter

Abstract

A new visibility instrument, the forward scatter visibility meter, has been developed. This report describes the development of the instrument, including the various field tests. Some thirty instruments have been operationally deployed in a network of automatic weather stations near L.G. Hanscom Field in Bedford, Mass. Comparisons between field instruments and transmissometers yield differences of about plus or minus 19 percent. Comparisons with visual observations show differences of plus or minus 34 percent and greater. Analyses of individual cases uncovered difficulties with the response time of observers and with ability to diagnose spatially varying visibility. The accuracy of visibility measurements is assessed and the report concludes by looking at the future of visibility instruments. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 18, 1974
Accession Number
AD0783270

Entities

People

  • Eugene Y. Moroz
  • H. Stuart Muench
  • Leo P. Jacobs

Organizations

  • Air Force Cambridge Research Laboratories

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Aircrafts
  • Coefficients
  • Detectors
  • Diagrams
  • Extinction
  • Field Tests
  • Geography
  • Light Sources
  • Measurement
  • Observation
  • Observers
  • Optical Properties
  • Scattering
  • Stations
  • Transmissometers

Readers

  • Atmospheric Remote Sensing.
  • Geodesy
  • Systems Analysis and Design