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Title: Evaluation of the lake model FLake over a coastal lagoon during the THAUMEX field campaign
Authors: Le Moigne, Patrick
Legain, Dominique
Lagarde, Franck
Potes, Miguel
Tzanos, Diane
Moulin, Eric
Barrié, Joel
Salgado, Rui
Messiaen, Grégory
Fiandrino, Annie
Donier, Sylvie
Traullé, Olivier
Costa, Maria João
Keywords: lake model FLake
THAUMEX field campaign
Issue Date: Oct-2013
Publisher: International Meteorological Institute in Stockolm
Citation: Le Moigne, P., D. Legain, F. Lagarde, M. Potes, D. Tzanos, E. Moulin, J. Barrié, R. Salgado, G. Messiaen, A. Fiandrino, S. Donier, O. Traullé, M. J. Costa. Evaluation of the lake model FLake over a coastal lagoon during the THAUMEX field campaign. Tellus A 2013, 65, 20951,
Abstract: The THAUMEX measurement campaign, carried out during the summer of 2011 in Thau, a coastal lagoon in southern France, focused on episodes of marine breezes. During the campaign, three intensive observation periods (IOPs) were conducted and a large amount of data were collected. Subsequently, standalone modelling using the FLake lake model was used, first to assess the surface temperature and the surface energy balance, and second to determine the energy budget of the water column at the measurement site. Surface fluxes were validated against in situ measurements, and it was determined that heat exchanges are dominated by evaporation. We also demonstrated that the model was sensitive to the light extinction coefficient at Thau, due to its shallowness and clarity nature. A heat balance was calculated, and the inclusion of a radiative temperature has improved it, especially by reducing the nocturnal evaporation. The FLake lake model was then evaluated in three-dimensional numerical simulations performed with the Meso-NH mesoscale model, in order to assess the changing structure of the boundary layer above the lagoon during the IOPs more accurately. We highlighted the first time ever when Meso-NH and FLake were coupled and proved the ability of the coupled system to forecast a complex phenomenon but also the importance of the use of the FLake model was pointed out. We demonstrated the impact of the lagoon and more precisely the Lido, a sandy strip of land between the lagoon and the Mediterranean Sea, on the vertical distribution of turbulent kinetic energy, evidence of the turbulence induced by the breeze. This study showed the complementarities between standalone and coupled simulations.
Type: article
Appears in Collections:FIS - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
CGE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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