Data in this database are freely available under the request of citation of   this paper   and the  paper   in which the data were published.

AEROSOL SCANNING ELECTRON MICROSCOPE (SEM) IMAGES

To give an indication of the shapes of the aerosol particles we provide one or two SEM images in the database per sample. Such images may for example be compared to images of particles collected directly from the atmosphere or in space or be used for shape analyses. The one or two SEM images per sample in the database are not suited to infer detailed information about the sizes of the particles, mainly because they range over several orders of magnitude, in most cases, so that images with lower magnification will be biased towards showing only larger particles, and vice versa