Expressions for the equilibrium surface Bowen ratio (β s ) and equilibrium evaporation are derived for a growing convective boundary layer (CBL) in terms of the Bowen ratio at the top of the mixed layerβ i and the entrainment parameter A R . If AR is put equal to zero, the solution forβ s becomes-that previously obtained for the zero entrainment or ‘closed box’ model. The Priestley-Taylor parameter α is also calculated and plotted in terms ofA R andβ i . Realistic combinations of the atmospheric parameters give values of α in the range 1.1 to 1.4.
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Betts, A. K.: 1992, ‘FIFE Atmospheric Boundary Layer Budget Methods’,J. Geophys. Res. 97, D17, 18,523–18,531.
De Bruin, H. A. R.: 1983, ‘A Model for the Priestley-Taylor Parameter α’,J. Clim. Appl. Meteorol. 22, 572–580.
Culf, A. D.: 1992, ‘An Application of Simple Models to Sahelian Convective Boundary Layer Growth’,Boundary-Layer Meteorol. 58, 1–18.
Driedonks, A. G. M.: 1981, ‘Dynamics of the Well Mixed Atmospheric Boundary Layer’, Scientific report W.R.81-2. pp. 189. K.N.M.I., de Bilt, The Netherlands.
McNaughton, K. G.: 1976, ‘Evaporation and Advection I: Evaporation from Extensive Homogeneous Surfaces’,Quart. J. Roy. Meteorol. Soc. 102, 181–191.
McNaughton, K. G. and Jarvis, P. G.: 1983, ‘Predicting Effects of Vegetation Changes on Transpiration and Evaporation’, in T. T. Kozlowski (ed.),Water Deficits and Plant Growth, Vol. VII, pp. 1–47. Academic Press, New York.
McNaughton, K. G. and Spriggs, T. W.: 1986, ‘A Mixed Layer Model for Regional Evaporation’,Boundary-Layer Meteorol. 34, 243–262.
Monteith, J. L., 1981, ‘Evaporation and Surface Temperature’,Quart. J. Roy. Meteorol. Soc. 107, 1–27.
Pereira, A. R. and Villa Nova, N. A. 1992, ‘Analysis of the Priestley-Taylor Parameter’,Agric. For. Meteorol. 61, 1–9.
Priestley, C. H. B. and Taylor, R. J.: 1972, ‘On the Assessment of Surface Heat Flux and Evaporation’,Mon. Weath. Rev. 106, 81–92.
Shuttleworth, W. J. and Calder, I. R.: 1979, ‘Has the Priestley-Taylor Equation any Relevance to Forest Evaporation?’,J. Appl. Meteorol.,18, 638–646.
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Culf, A.D. Equilibrium evaporation beneath a growing convective boundary layer. Boundary-Layer Meteorol 70, 37–49 (1994). https://doi.org/10.1007/BF00712522
- Boundary Layer
- Convective Boundary Layer
- Convective Boundary
- Atmospheric Parameter