Servicio de Información Comunitario sobre Investigación y Desarrollo - CORDIS

Catalogue of maps of model data

Modelled aerosol maps over Europe for the year 2000 have been assembled using the LMDz-INCA model which couples the Laboratoire de Meteorologie Dynamique general circulation model and the "Interaction with Chemistry and Aerosols" (INCA) module developed at the LSCE, Gis sur Yvette, near Paris. Comparisons between model predictions have been made with aerosol observations made available by CREATE partners and from the AERONET network. The aerosol parameters are: sulfate, black carbon, organic carbon and sea salt surface concentrations, surface concentration of PM10 mass, aerosol optical depth and the Angstrom component. All of these comparisons are available for each month of the year 2000, and for the different seasons of the year. A web interface provides user-friendly access to the results: The web interface is a major achievement and is a new way to provide insight into aerosol fields over Europe. A similar comparison has been established for global coverage and is accessible through:

Aerosol extinction vertical profiles measured with Raman lidar in the framework of EARLINET in 2000 are compared to profiles modelled by LMDzT-INCA at seven stations in Europe. The comparisons for all observed profiles can be found at the following web site: Information is synthesised from many profiles of vertical aerosol distribution for the first time on this web site interface. The lidar/model comparisons showed that an average vertical profile of aerosol extinction provides a powerful diagnostic tool for the understanding of the vertical distribution of the aerosol.

The combination of satellite (MODIS), sun photometer and lidar retrieved aerosol optical depth at a particular EARLINET station (Hamburg) showed that the column-integrated values of different data origin are comparable within a factor of 2. Good agreement is found between column integrated EARLINET measurements and AERONET optical depth. Results also suggest that in-situ ground observations require a denser network than that of AOD, and both spatial and temporal in situ ground data is particularly lacking in south-western and south-eastern Europe. Use can be made of the Model results to provide an assessment on the representativeness of surface aerosol data based on correlations of time series in observations and model outputs. The analysis supports the need for a widespread monitoring network of about 20 super-sites in Europe. Based on this analysis and on the availability of existing suitable sites, 20 super-sites have been selected for ongoing and future aerosol measurements in Europe.

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