Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

The average surface resistance of a pine forest derived from Bowen ratio measurements

  • 132 Accesses

  • 69 Citations

Abstract

Quartz crystal thermometers with ceramic tubes for the wet bulbs were used to measure vertical profiles of temperature and humidity above a pine forest. The effect of the supporting structures on the measurements and an objective method of calculating the Bowen ratio are described. The surface resistance was computed from the Bowen-ratio results. The diurnal variations in the average surface resistance of the forest for groups of dry days in Spring, Summer and Autumn are presented.

This is a preview of subscription content, log in to check access.

References

  1. Black, T. A. and McNaughton, K. G.: 1971, ‘Psychrometric Apparatus for Bowen-Ratio Determinations over Forests’,Boundary-Layer Meteorol. 2, 246–254.

  2. Fuchs, M. and Tanner, C. B.: 1965, ‘Radiation Shields for Air Temperature Thermometers’,J. Appl. Meteorol. 4, 544–547.

  3. Gay, L. W.: 1972, ‘On the Construction and Use of Ceramic Wick Thermocouple Psychrometers’, in R. W. Brown and B. P. van Haveren (eds.),Psychrometry in Water Relations Research, Agric. Exper. Sta., Logan, Utah, pp. 251–258.

  4. Laurence, F. J. and Pruitt, W. O.: 1969, ‘A Psychrometer System for Micrometeorological Profile Determination’,J. Appl. Meteorol. 8, 492–498.

  5. McNeil, D. D. and Shuttleworth, W. J.: 1975, ‘Comparative Measurements of the Energy Fluxes over a Pine Forest’, to be submitted toBoundary-Layer Meteorol.

  6. Monteith, J. L.: 1965, ‘Evaporation and Environment’,Symp. Soc. Exp. Biol. 19, 205–234.

  7. Oliver, Sylvia A. and Oliver H. R.: 1973, ‘A computer Method for Automatic Acquisition of Wind Speed Data’,J. Phys. E: Sci. Instrum. 6, 401–403.

  8. Smith, F. B., Carson, D. J., and Oliver, H. R.: 1972, ‘Mean Wind-Direction Shear Through a Forest Canopy’,Boundary-Layer Meteorol. 3, 178–190.

  9. Stewart, J. B.: 1975, ‘Evaporation from the Wet Canopy of a Pine Forest,’ to be submitted toQuart. J. Roy. Meteorol. Soc.

  10. Stewart, J. B. and Thorn, A. S.: 1973, ‘Energy Budgets in Pine Forest’,Quart. J. Roy. Meteorol. Soc. 99, 154–170.

Download references

Author information

Additional information

On secondment from the Meteorological Office.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Gash, J.H.C., Stewart, J.B. The average surface resistance of a pine forest derived from Bowen ratio measurements. Boundary-Layer Meteorol 8, 453–464 (1975). https://doi.org/10.1007/BF02153564

Download citation

Keywords

  • Quartz
  • Diurnal Variation
  • Vertical Profile
  • Average Surface
  • Quartz Crystal