Articles | Volume 27, issue 8
Ann. Geophys., 27, 3155–3164, 2009

Special issue: From Deserts to Monsoons – First International Aegean...

Ann. Geophys., 27, 3155–3164, 2009

  12 Aug 2009

12 Aug 2009

The potential of the synergistic use of passive and active remote sensing measurements for the validation of a regional dust model

V. Amiridis1, M. Kafatos2, C. Perez3, S. Kazadzis4,8, E. Gerasopoulos4, R. E. Mamouri5, A. Papayannis5, P. Kokkalis5, E. Giannakaki6, S. Basart3, I. Daglis1, and C. Zerefos7 V. Amiridis et al.
  • 1Institute for Space Applications and Remote Sensing, National Observatory of Athens, Athens, Greece
  • 2Center of Excellence in Earth Observing, Schmid College of Science, Chapman University, California, USA
  • 3Barcelona Supercomputing Center-Centro Nacional de Supercomputación (BSC-CNS), Earth Sciences Department, Barcelona, Spain
  • 4Institute of Environmental Research and Sustainable Development, National Observatory of Athens, Athens, Greece
  • 5Laboratory of Lasers and Applications, National Technical University of Athens, Athens, Greece
  • 6Laboratory of Atmospheric Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece
  • 7Laboratory of Climatology, University of Athens, Athens, Greece
  • 8Finnish Meteorological Institute, Climate Change Unit, Helsinki, Finland

Abstract. A long-lasting Saharan dust event affected Europe on 18–23 May 2008. Dust was present in the free troposphere over Greece, in height ranges between the surface and approximately 4–5 km above sea level. The event was monitored by ground-based CIMEL sunphotometric and multi-wavelength combined backscatter/Raman lidar measurements over Athens, Greece. The dust event had the maximum of its intensity on 20 May. Three-dimensional dust spatial distribution over Greece on that day is presented through satellite synergy of passive and active remote sensing using MODIS and CALIPSO data, respectively. For the period under study, the ground-based measurements are used to characterize the dust event and evaluate the latest version of the BSC Dust Regional Atmospheric Modeling (BSC-DREAM) system. Comparisons of modeled and measured aerosol optical depths over Athens show that the Saharan dust outbreak is fairly well captured by BSC-DREAM simulations. Evaluation of BSC-DREAM using Raman lidar measurements on 20 May shows that the model consistently reproduces the dust vertical distribution over Athens.