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Browsing University of Hertfordshire by Author "Chemel, C."
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Sensitivity of tropical deep convection in global models : effects of horizontal resolution, surface constraints and 3D atmospheric nudging
Chemel, C.; Russo, M.R.; Hosking, J.S.; Telford, P.J.; Pyle, J.A. (2015-04)We investigate the ability of global models to capture the spatial patterns of tropical deep convection. Their sensitivity is assessed through changing horizontal resolution, surface flux constraints, and constraining ... -
Trace gas/aerosol boundary concentrations and their impacts on continental-scale AQMEII modeling domains
Schere, K.; Mathur, R.; Roselle, S.; Rao, S.T.; Flemming, J.; Vautard, R.; Chemel, C.; Hu, Rong-Ming; Sokhi, R.S.; Colette, A.; Bessagnet, B.; Meleux, F.; Hogrefe, C.; Galmarini, S. (2012-06)Over twenty modeling groups are participating in the Air Quality Model Evaluation International Initiative (AQMEII) in which a variety of mesoscale photochemical and aerosol air quality modeling systems are being applied ... -
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 ... -
Valley heat deficit as a bulk measure of wintertime particulate air pollution in the Arve River Valley
Chemel, C.; Arduini, Gabriele; Staquet, Chantal; Largeron, Yann; Legain, Dominique; Tzanos, Diane; Paci, Alexandre (2016-03)Urbanized valleys are particularly vulnerable to particulate air pollution during the winter, when ground-based stable layers or cold-air pools persist over the valley floor. We examine whether the temporal variability of ...