May-Britt
Kallenrode
Universität Osnabrück
02.12.2005, 13.00 c.t.
Room S3120
Precipitating energetic
particles from different sources in helio- and geospace ionize the atmosphere
from the thermosphere down to the stratosphere or even upper troposphere. The
resulting modifications in atmospheric chemistry include the descruction of
ozone. This talk gives an overview over particle populations, their temporal
variations, their spatial precipitation and ionization patterns, and the
modeling of particle precipitation and its consequences. Some examples for
particle precipitation and observed/modeled ozone depletion will be discussed,
too.