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Browsing University of Hertfordshire by Author "Staquet, C."
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Energetics of Deep Alpine Valleys in Pooling and Draining Configurations
Arduini, G.; Chemel, Charles; Staquet, C. (2017-07-01)The Weather Research and Forecast numerical model is used to investigate the nocturnal atmospheric boundary layer in a valley that opens either on a wider valley (draining configuration) or on a narrower valley (pooling ... -
Estimating the diffusive heat flux across a stable interface forced by convective motions
Chemel, C.; Staquet, C.; Chollet, J.P. (2010)Entrainment at the top of the convectively-driven boundary layer (CBL) is revisited using data from a high-resolution large-eddy simulation (LES). In the range of values of the bulk Richardson number RiB studied here (about ... -
A formulation of convective entrainment in terms of mixing efficiency
Chemel, C.; Staquet, C. (2007) -
Generation of internal gravity waves by a katabatic wind in an idealized alpine valley
Chemel, C.; Staquet, C.; Largeron, Y. (2009)The dynamics of the atmospheric boundary layer in an alpine valley at night or in winter is dominated by katabatic (or down-slope) flows. As predicted by McNider (1982) oscillations along the slope are expected to occur ... -
Interactions between the night time valley-wind system and a developing cold-air pool
Arduini, Gabriele; Staquet, C.; Chemel, Charles (2016-10-01)The Weather Research and Forecast (WRF) numerical model is used to characterize the influence of a thermally-driven down-valley flow on a developing cold-air pool in an idealized alpine valley decoupled from the atmosphere ... -
Local and non-local controls on a persistent cold-air pool in the Arve River Valley
Arduini, G.; Chemel, C.; Staquet, C. (2020-02-28)A numerical model is used to simulate a persistent cold-air pool (PCAP) event that occurred in the section of the Arve River Valley around Passy in the French Alps. During this period, an upper-level ridge from the Atlantic ... -
Turbulent mixing in a katabatic wind under stable conditions
Largeron, Y.; Staquet, C.; Chemel, C. (2010)The purpose of this paper is to analyze the mixing properties of the katabatic flow which develops at night or in winter on the slopes of a valley. An idealized topography is considered, the initial Brunt-Väisälä frequency ...