Sensitivity of desert dust emissions to model horizontal grid spacing during the Bodélé Dust Experiment 2005

The impact of model horizontal grid spacing on meteorology and dust emissions in the Bodélé depression was investigated during the well-documented period of the Bodélé Dust Experiment 2005 (BoDEx 2005). Five horizontal grid spacing ranging from 100 km to 5 km were tested. The main conclusion of these sensitivity tests is that the meteorology of the Bodélé depression is quite insensitive to model horizontal grid spacing below 50 km in agreement with Todd et al.'s (2008b) results. Below 50 km, dust emissions also appear relatively insensitive to model mesh size, the influence of model horizontal grid spacing on dust emissions tending towards an asymptotic behavior as model mesh size is reduced

Le CID Breuil, domaine OBB : Inventaire des Objets en bronze de l'Age du Bronze

Bouet B., Verney A. Le CID Breuil, domaine OBB : Inventaire des Objets en bronze de l'Age du Bronze. In: Bulletin de la Société préhistorique française, tome 83, n°10, 1986. Numéro spécial d'Études et Travaux. pp. 304-306

Modélisation pluriannuelle des émissions éoliennes de particules terrigènes en région semi-aride sahélienne

International audienc

Genomic transcriptional profiling in LOU/C/Jall rats identifies genes for successful aging

International audienc

Mesoscale modeling of aeolian dust emission during the BoDEx 2005 experiment

The Bodele depression (Northern Chad) is believed to be the single largest source for the Saharan dust transported over the Atlantic Ocean, especially that emerging in the Gulf of Guinea in boreal winter. During the Bodele Dust Experiment 2005 (BoDEx 2005), which was performed in February-March 2005, a severe dust event was observed and some of its main characteristics (surface wind, dust concentrations, radiation) were recorded. This paper tests the capability of a mesoscale model coupled online with a dust production model (DPM) to reproduce the small scale features associated to this dust event. These simulations clearly show that a spatial resolution of 10 km x 10 km is required to reproduce satisfactorily the observed surface winds and the main characteristics of the dust plume