Quantification of the regional and temporal aerosol variability in the polar regions by combining independet ground-based, airborne, and satellite aerosol measurements including the development of new satellite retrieval procedures and the adaption of an

该项目旨在通过遥感调查北极地区大气气溶胶的区域和时间分布及其特征。因此，为BERIS(贝尔-不来梅气溶胶反演)开发的遥感方法和AATSR的双视方法必须适应和测试北极的特定条件：球状大气、冰雪的高反照率和双向雪反射率。对于北极实验活动ASTAR-4和ASTAR-5，将使用遥感工具获得气溶胶光学厚度的区域和时间分布，并用于验证反演结果。将编制和应用北极地区气溶胶数据同化，以填补检索结果的区域空白，并将其结合成上述活动的气溶胶特性的完整视图。

The project intends to investigate regional and temporal distribution and characteristics of atmospheric aerosol in Arctic regions by remote sensing. Therefore remote sensing methods, developed for MERIS (BAER - Bremen AErosol Retrieval) and a dual-viewing approach for AATSR have to be adapted and tested to the specific arctic conditions: spherical atmosphere, high albedo by snow and ice and bi-directional snow reflectance. For Arctic experimental campaigns ASTAR-4 and ASTAR-5 the remote sensing tools will be used to obtain regional and temporal distribution of aerosol optical thickness and for validation of the retrieval results. Data assimilation for artic aerosol will be prepared and applied to fill regional gaps of the retrieval results and integrate them to a complete view of the aerosol properties of the campaigns above.