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@ARTICLE{Khosrawi:38202,
author = {Khosrawi, F. and Müller, R. and Proffitt, M. H. and
Nakajima, H.},
title = {{M}onthly averaged ozone and nitrous oxide from the
{I}mproved {L}imb {A}tmospheric {S}pectrometer ({ILAS}) in
the {N}orthern and {S}outhern {H}emisphere polar regions},
journal = {Journal of geophysical research / Atmospheres},
volume = {109},
issn = {0022-1406},
address = {Washington, DC},
publisher = {Union},
reportid = {PreJuSER-38202},
pages = {D10301},
year = {2004},
note = {Record converted from VDB: 12.11.2012},
abstract = {Northern and southern hemispheric averaged ozone (O-3) and
nitrous oxide (N2O) measured by the Improved Limb
Atmospheric Spectrometer (ILAS) were used to examine
photochemical and dynamical changes in high-latitude O-3
distributions. Using correlations of O-3 versus N2O, the
ILAS data are organized monthly in both hemispheres by
partitioning these data into equal bins of altitude or
potential temperature. The resulting families of curves help
to differentiate O-3 changes due to photochemistry from
those due to transport. Our study extends the work of
Proffitt et al. [2003] for the Northern Hemisphere to the
Southern Hemisphere. Further, our study confirms and extends
their results for the Northern Hemisphere by applying their
analysis to a significantly greater altitude range. As in
the Northern Hemisphere, the families of curves for the
altitude, and potential temperature bins in the Southern
Hemisphere are separated and generally do not cross. In both
hemispheres a better separation is found for the potential
temperature binning. In the Southern Hemisphere November and
December data, preserved photochemical O-3 loss is evident
in the lower stratosphere. Further, summer ozone loss is
evident in the Southern Hemisphere from January to March. In
the Arctic, ongoing photochemical O-3 loss is evident in the
Northern Hemisphere spring data. While at higher altitudes
the correlation between N2O and O-3 is generally positive (
increasing N2O with increasing O-3), at lower levels the
correlation is negative. This change of correlation from
positive to negative can be interpreted in terms of
photochemical and dynamical processes. Strong descent causes
a steepening of the positively correlated curves, while the
curves change their slope from positive to negative if
photochemical destruction of O-3 is present and descent is
weak. The level of slope change is also photochemically
influenced and therefore changes with season. Data sets such
as the one derived here may be useful for testing
atmospheric models and for identifying future changes in
stratospheric ozone.},
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:000221611200002},
doi = {10.1029/2003JD004365},
url = {https://juser.fz-juelich.de/record/38202},
}