2nd Workshop on Mineral Dust,
Detailed program and presentations (download)
Presented posters (download)
Local organization committee
The first International Dust Workshop held in Boulder (USA) in June 1999 (150 participants) showed that substantial advances in our understanding of mineral aerosol and of its impacts on the climate system have been accomplished in the nineties. However, large uncertainties in the prediction of dust radiative impacts still exist. This has been recently confirmed by the 2001 IPPC Report which cannot define the sign nor the magnitude of the mineral dust forcing.
This first workshop highlighted the various outstanding issues and recommended some strategies for future research (Sokolik et al., 2001). It was demonstrated that the main sources of uncertainties involve deficiencies in the understanding of physical and chemical processes as well as in the lack of adequate data. In particular, it was stated that an advanced understanding of main processes governing the emission, transport, removal, and evolution of dust was required. The high priority research needs identified during this workshop concerns three main categories :
Examples of poorly understood processes that make critical contributions include dust emission via saltation and sandblasting mechanisms at a variety of scales, interactions of dust with other atmospheric aerosols, gases, and clouds, and heterogeneous chemistry on dust particle surfaces. These are difficult problems due to the nonlinearity of these processes, possible feedbacks, and the overlap in time scales between aerosol processes and atmospheric dynamics. The difficulty of the validation of the model predictions due to the lack and or the inadequacy of data was pointed out as well as the needs of improvements in the methods employed to determine the composition of individual particles and their morphology, light absorption, and aerosol scattering phase function. Finally, the need for the emergence of comprehensive coordinated measurements of the physical and chemical properties of dust in targeted regions was underlined. Four years later, it is possible to assess how much these key issues have been documented and to identify the present key issues to further progress in the understanding of the mineral dust and its impacts.
This is the objective of the second Mineral Dust Workshop, that will take place in Paris from the 10th -12th September 2003.
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