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@ARTICLE{Tilmes:41917,
author = {Tilmes, S. and Müller, R. and Grooß, J.-U. and Russell
III, J. M.},
title = {{O}zone loss and chlorine activation in the {A}rctic
winters 1991-2003 derived with the tracer-tracer
correlations},
journal = {Atmospheric chemistry and physics},
volume = {4},
issn = {1680-7316},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {PreJuSER-41917},
pages = {2181 - 2213},
year = {2004},
note = {Record converted from VDB: 12.11.2012},
abstract = {Chemical ozone loss in the Arctic stratosphere was
investigated for the twelve years between 1991 and 2003
employing the ozone-tracer correlation method. For this
method, the change in the relation between ozone and a
long-lived tracer is considered for all twelve years over
the lifetime of the polar vortex to calculate chemical ozone
loss. Both the accumulated local ozone loss in the lower
stratosphere and the column ozone loss were derived
consistently, mainly on the basis of HALOE satellite
observations. HALOE measurements do not cover the polar
region homogeneously over the course of the winter. Thus, to
derive an early winter reference function for each of the
twelve years, all available measurements were additionally
used; for two winters climatological considerations were
necessary. Moreover, a detailed quantification of
uncertainties was performed. This study further demonstrates
the interaction between meteorology and ozone loss. The
connection between temperature conditions and chlorine
activation, and in turn, the connection between chlorine
activation and ozone loss, becomes obvious in the HALOE HCl
measurements. Additionally, the degree of homogeneity of
ozone loss within the vortex was shown to depend on the
meteorological conditions.Results derived here are in
general agreement with the results obtained by other methods
for deducing polar ozone loss. Differences occur mainly
owing to different time periods considered in deriving
accumulated ozone loss. However, very strong ozone losses as
deduced from SAOZ for January in winters 1993-1994 and
1995-1996 cannot be identified using available HALOE
observations in the early winter. In general, strong
accumulated ozone loss was found to occur in conjunction
with a strong cold vortex containing a large volume of
possible PSC existence ( V-PSC), whereas moderate ozone loss
was found if the vortex was less strong and moderately warm.
Hardly any ozone loss was calculated for very warm winters
with small amounts of V-PSC during the entire winter. This
study supports the linear relationship between VPSC and the
accumulated ozone loss reported by Rex et al. ( 2004) if
VPSC was averaged over the entire winter period. Here,
further meteorological factors controlling ozone loss were
additionally identified if VPSC was averaged over the same
time interval as that for which the accumulated ozone loss
was deduced. A significant difference in ozone loss ( of
approximate to36 DU) was found due to the different duration
of solar illumination of the polar vortex of at maximum 4
hours per day in the observed years. Further, the increased
burden of aerosols in the atmosphere after the Pinatubo
volcanic eruption in 1991 significantly increased the extent
of chemical ozone loss.},
keywords = {J (WoSType)},
cin = {ICG-I},
ddc = {550},
cid = {I:(DE-Juel1)VDB47},
pnm = {Chemie und Dynamik der Geo-Biosphäre},
pid = {G:(DE-Juel1)FUEK257},
shelfmark = {Meteorology $\&$ Atmospheric Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000225233800001},
url = {https://juser.fz-juelich.de/record/41917},
}