Contact: Kirsten Achenbach
achenbach@mpch-mainz.mpg.de
49-613-130-5362
Max-Planck-Gesellschaft

Rain cloud?

Caption: Not every dense cloud brings rain. Rain falls in a normal way in unpolluted air from this cloud over the Amazon (left). In contrast, no rain fell from another cloud on the same day due to the cloud being encumbered with a high number of aerosols caused by fire clearance -- the moisture droplets remained too small (right).

Credit: Left: Meinrat Andreae, MPI for Chemistry; right: Daniel Rosenfeld, Hebrew University, Jerusalem

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