On the Measurement of Dry Deposition Using Imperfect Sensors and in Non-Ideal Terrain

  • B. B. Hicks
  • R. T. McMillen
Chapter

Abstract

Important questions concerning the turbulent exchange of atmospheric pollutants between the air and natural surfaces urgently require answers, but sensors for many important species are not yet sufficiently well developed for use with standard micrometeorological methods. There is need, therefore, to develop methods by which deficient sensors can be used in micrometeorological applications. There is also need to extend micrometeorological methods to circumstances which do not satisfy the conventional perfect-site constraints. Here, methods based upon the assumption of cospectral similarity are explored. Initial tests indicate that it is possible to estimate daytime turbulent fluxes with sensors giving response times considerably greater than the values normally quoted for eddy correlation (e.g., 5 s instead of 1 s), and to compute first-order corrections for the error resulting from the lack of detection of high-frequency turbulence. It is suggested that a similar method might be used to derive flux data in terrain more complex than can be handled by conventional micrometeorology. The techniques outlined here should be applied only with caution, but appear adequate to permit the use of deficient sensors in some circumstances, and good sensors over some micrometeorologically deficient terrain.

Keywords

Deposition Velocity Heat Storage Canopy Temperature Eddy Correlation Eddy Flux 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© D. Reidel Publishing Company 1988

Authors and Affiliations

  • B. B. Hicks
    • 1
  • R. T. McMillen
    • 1
  1. 1.Atmospheric Turbulence and Diffusion DivisionNOAA/ERL Air Resources LaboratoryOak RidgeUSA

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