Homogeneized modeling of mineral dust emissions over Europe and Africa using the CHIMERE model
R. Briant1, L. Menut1, G. Siour2, and C. Prigent31LMD, Laboratoire de météorologie dynamique, École Polytechnique, 91128 Palaiseau, France 2LISA, UMR-CNRS 7583, Université Paris Est Créteil (UPEC), Université Paris Diderot (UPD), Institut Pierre Simon Laplace (IPSL), Créteil, France 3UMR-CNRS 8112, Laboratoire d' Études du Rayonnement et de la Matière en Astrophysique, Observatoire de Paris, Paris, France
Received: 28 Apr 2014 – Accepted for review: 08 May 2014 – Discussion started: 19 May 2014
Abstract. In the region including Africa and Europe, the main part of mineral dust emissions is observed in Africa. The particles are thus transported towards Europe and constitute a non-negligible part of the surface aerosols measured and controlled in the framework of the European air quality legislation. The modelling of these African dust emissions fluxes and transport is widely studied and complex parameterizations are already used in regional to global model for this Sahara-Sahel region. In a lesser extent, mineral dust emissions occur locally in Europe, mainly over agricultural areas. Their modelling is generally poorly done or just ignored. But in some cases, this contribution may be important and may impact the European air quality budget. In this study, we propose an homogeneized calculations of mineral dust fluxes for Europe and Africa. For that, we extended the CHIMERE dust production model (DPM) by using new soil and surface datasets, and the global aeolian roughness length dataset provided by GARLAP from microwave and visible satellite observations. This DPM is detailed along with academic tests case results and simulation on a real case results.
Briant, R., Menut, L., Siour, G., and Prigent, C.: Homogeneized modeling of mineral dust emissions over Europe and Africa using the CHIMERE model, Geosci. Model Dev. Discuss., 7, 3441-3480, doi:10.5194/gmdd-7-3441-2014, 2014.