A set of semi-continuous measurements of temperature, wind and moisture gradients as well as of net radiation and ground heat flux covering a period of about one and a half years has been analysed to give a corresponding set of complete surface energy balance data on an hourly basis. An analysis of
Estimation of surface stress and heat flux from profile data
โ Scribed by C. H. B. Priestley
- Publisher
- John Wiley and Sons
- Year
- 1959
- Tongue
- English
- Weight
- 307 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0035-9009
No coin nor oath required. For personal study only.
โฆ Synopsis
Abstract
The problem of estimating shearing stress from the wind profile in the lowest layers is discussed from the operational viewpoint. It is concluded that windโprofile data alone may never in practice be sufficient, even though a universal profile with the stress as a separable parameter may be established by future research. On the other hand the determination of both stress and heat flux, with adequate accuracy, may be possible from single values of temperature gradient and wind gradient observed simultaneously. A difficulty common to all indirect methods lies in interpreting the sampling variations.
๐ SIMILAR VOLUMES
A bulk ABL similarity approach was used to make regional estimates of the sensible heat ยฏux by combining surface temperature measurements with mixed layer temperature and wind speed proยฎles. The mixed layer proยฎles were measured by a 915 MHz Proยฎler/ Radio Acoustic Sounding System and by radiosondes
A new method of sensible heat flux estimation by a hybrid use of temperature profile and light-beam deflection is proposed and tested over an asphalt pavement on fine days. A helium-neon gas laser with wavelength 0.6328 pm was used as a light-beam source. Temperature gradient near the surface was m
Global estimates of momentum and heat fluxes are required for the application of any general atmospheric and oceanic circulation model. A new technique for the estimation of these fluxes in a constant flux boundary layer is developed. The new approach is a modification of the dissipation technique b
An indirect method of estimating the surface heat flux from observations of vertical velocity variance at the lower mid-levels of the convective atmospheric boundary layer is described. Comparison of surface heat flux estimates with those from boundary-layer heating rates is good, and this method se