Evaluation of the lake model FLake over a coastal lagoon during the THAUMEX field campaign

Type Article
Date 2013
Language English
Author(s) Le Moigne Patrick1, Legain Dominique1, Lagarde FranckORCID2, Potes Miguel3, Tzanos Diane1, Moulin Eric1, Barrie Joel1, Salgado Rui, Messiaen Gregory2, Fiandrino Annie2, Donier Sylvie1, Traulle Olivier1, Costa Maria Joao
Affiliation(s) 1 : CNRM GAME, Meteo France CNRS UMR 3589, F-31057 Toulouse, France.
2 : IFREMER, F-34203 Sete, France.
3 : Univ Evora, Ctr Geofis Evora, P-7000 Evora, Portugal.
Source Tellus Series A-dynamic Meteorology And Oceanography (0280-6495) (Co-action Publishing), 2013 , Vol. 65 , P. -
DOI 10.3402/tellusa.v65i0.20951
WOS© Times Cited 6
Note THAUMEX measurement campaign (2011)
Keyword(s) lake modelling, surface energy budget, coastal breeze, water heat storage, surface temperature
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.
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Le Moigne Patrick, Legain Dominique, Lagarde Franck, Potes Miguel, Tzanos Diane, Moulin Eric, Barrie Joel, Salgado Rui, Messiaen Gregory, Fiandrino Annie, Donier Sylvie, Traulle Olivier, Costa Maria Joao (2013). Evaluation of the lake model FLake over a coastal lagoon during the THAUMEX field campaign. Tellus Series A-dynamic Meteorology And Oceanography, 65, -. Publisher's official version : https://doi.org/10.3402/tellusa.v65i0.20951 , Open Access version : https://archimer.ifremer.fr/doc/00161/27257/