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DOI: http://dx.doi.org/10.1065/espr2001.12.106 --- A ground-based Differential Absorption Lidar was
employed to study the dynamics of atmospheric O3 within the
planetary boundary layer of a basin in the ´´Fichtelgebirge´´ mountains,
NE Bavaria. In particular, the night-time dynamics of O3
linked to the ground were investigated. The Lidar system measured
vertical profiles of O3 up to 1 km above ground. For detailed
analysis of the night-time dynamics of ozone, supplementary
data from three ground-based stations (measuring mixing
ratios of O3 and NOx, as well as meteorological parameters) are
essential. The Lidar results could be evaluated with these data
from various altitudes above the basin floor. For the station with
the largest (vertical) distance to the ground-based Lidar, the
agreement was very good at all times. The Lidar method proved
to be useful for examining the spatial distribution of O3. The
observed night-time decrease of O3 at the bottom of the basin
was due to deposition and to advection of air masses containing
less O3 from the mountain slopes.