FAST RESPONSE INSTRUMENTATION FOR THE MEASUREMENT OF TURBULENT FLUXES IN THE LOWER ATMOSPHERE AND A FILM READER SYSTEM AND ANALOG STATISTICAL ANALYZER.

Abstract

The goal of the research was to develop rapid reponse instrumentation suitable for the measurement of the turbulent fluxes of momentum, heat, and water vapor in the boundary layer. The instrumentation selected and developed for the measurement of mass transport and temperature was a gated continuous-wave two-head sonic anemometer. An infrared technique was developed to measure specific humidity over a one-meter open path. In order to establish the specifications for these two instruments so that they would be compatible with the flux calculations to be undertaken, a careful study and error analysis was made of the flux calculations. The analysis was directed both toward the determination of tolerance limits on the instruments and the development of efficient programs of calculation. The development of a film reader which can be used in the analog processing of fluctuation data to extract statistical properties is also discussed.

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1964
Accession Number
AD0604881

Entities

People

  • J. Ralph Edwards
  • James H. Tracey
  • Robert E. Post
  • Robert M. Stewart Jr.
  • Robert W. Johnson

Tags

DTIC Thesaurus Topics

  • Anemometers
  • Boundary Layer
  • Continuous Waves
  • Error Analysis
  • Film Readers
  • Humidity
  • Instrumentation
  • Measurement
  • Measuring Instruments
  • Water Vapor

Readers

  • Fluid Dynamics.
  • Solar Physics
  • Systems Analysis and Design