An experimental appraisal of the terms in the heat and moisture flux equations for local advection

✍ Scribed by A. R. G. Lang; K. G. McNaughton; Chen Fazu; E. F. Bradley; E. Ohtaki

• Publisher: Springer
• Year: 1983
• Tongue: English
• Weight: 670 KB
• Volume: 25
• Category: Article
• ISSN: 0006-8314
• DOI: 10.1007/bf00122099

✦ Synopsis

Terms in the heat and vapour flux equations, appropriate to the atmospheric surface layer with horizontal heterogeneity in one direction, have been evaluated empirically. The experimental site was a flooded rice field, which was bounded to windward by a semi-arid region. Local conditions over the rice were always stable, but the vertical fluxes of heat and water vapour were large.

All terms in the flux equations were either measured directly, or, if sufficiently small, estimated, except the term containing fluctuating pressure, which was obtained by difference. The relative magnitudes of the major terms (production and pressure covariance) were similar to those reported previously for horizontally homogeneous flow with similar stabilities. Current parameterizations of the pressure covariance terms sometimes gave values which differed by factors of five or ten from the experimental results, and the interrelationships depended upon the stability.