Articles | Volume 16, issue 14
Research article
19 Jul 2016
Research article |  | 19 Jul 2016

Turbulence kinetic energy budget during the afternoon transition – Part 2: A simple TKE model

Erik Nilsson, Marie Lothon, Fabienne Lohou, Eric Pardyjak, Oscar Hartogensis, and Clara Darbieu

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Cited articles

Angevine, W., Baltink, H., and Bosveld, F.: Observations Of The Morning Transition Of The Convective Boundary Layer, Bound.-Lay. Meteorol., 101, 209–227, 2001.
Basu, S., Vinuesa, J., and Swift, A.: Dynamic LES modeling of a diurnal cycle, J. Appl. Meteorol. Climatol., 47, 1156–1174, 2008.
Beare, R. J., Edwards, J. M., and Lapworth, A.: Simulation of the observed evening transition and nocturnal boundary layers: large-eddy simulation, Q. J. Roy. Meteor. Soc., 132, 81–99, 2006.
Blay-Carreras, E., Pino, D., Vilà-Guerau de Arellano, J., van de Boer, A., De Coster, O., Darbieu, C., Hartogensis, O., Lohou, F., Lothon, M., and Pietersen, H.: Role of the residual layer and large-scale subsidence on the development and evolution of the convective boundary layer, Atmos. Chem. Phys., 14, 4515–4530,, 2014.
BLLAST: Boundary Layer Late Afternoon and Sunset Turbulence (BLLAST) website, available at: (last access: 1 July 2016), 2015.
Short summary
A new simple model for turbulence kinetic energy (TKE) and its budget is presented for the sheared convective atmospheric boundary layer. It is used to study effects of buoyancy and shear on TKE evolution during the afternoon transition, especially near the surface. We also find a region of weak turbulence during unstable afternoon conditions below the inversion top, which we refer to as a "pre-residual layer".
Final-revised paper