Surface-Layer Fluxes Measured Using the CT2-Profile Method

View More View Less
  • 1 National Oceanic and Atmospheric Administration, Wave Propagation Laboratory, Boulder, Colorado
  • | 2 Science Technology Corporation, Boulder, Colorado
  • | 3 National Oceanic and Atmospheric Administration, Wave Propagation Laboratory, Boulder, Colorado
© Get Permissions Rent on DeepDyve
Restricted access

Abstract

The first experimental test of obtaining heat and momentum fluxes from measurements of the profile of the temperature structure parameter CT2 is performed. The parameter CT2 is obtained from resistance-wire thermometers as well as from optical-scintillation measurements; the latter produces averaged values over a 606-m propagation path. Use of optical scintillation can produce spatial averaging over propagation paths as long as several kilometers. Deducing the fluxes requires the Monin-Obukhov similarity theory of the horizontally homogeneous atmospheric surface layer. The results show agreement with eddy-correlation measurements of the fluxes for homogeneous and stationary micrometeorological conditions. The accuracy of optical scintillometers must, however, be improved to obtain reliable fluxes by this method.

Abstract

The first experimental test of obtaining heat and momentum fluxes from measurements of the profile of the temperature structure parameter CT2 is performed. The parameter CT2 is obtained from resistance-wire thermometers as well as from optical-scintillation measurements; the latter produces averaged values over a 606-m propagation path. Use of optical scintillation can produce spatial averaging over propagation paths as long as several kilometers. Deducing the fluxes requires the Monin-Obukhov similarity theory of the horizontally homogeneous atmospheric surface layer. The results show agreement with eddy-correlation measurements of the fluxes for homogeneous and stationary micrometeorological conditions. The accuracy of optical scintillometers must, however, be improved to obtain reliable fluxes by this method.

Save