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@ARTICLE{Davies:54034,
author = {Davies, S. and Mann, G. W. and Carslaw, K. S. and
Chipperfield, M. P. and Remedios, J. J. and Allen, G. and
Waterfall, A. M. and Spang, R. and Toon, G. C.},
title = {{T}esting our understanding of {A}rctic denitrification
using {MIPAS}-{E} satellite measurements in winter
2002/2003},
journal = {Atmospheric chemistry and physics},
volume = {6},
issn = {1680-7316},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {PreJuSER-54034},
pages = {3149 - 3161},
year = {2006},
note = {Record converted from VDB: 12.11.2012},
abstract = {Observations of gas-phase HNO3 and N2O in the polar
stratosphere from the Michelson Interferometer for Passive
Atmospheric Sounding aboard the ENVISAT satellite (MIPAS-E)
were made during the cold Arctic winter of 2002/2003. Vortex
temperatures were unusually low in early winter and remained
favourable for polar stratospheric cloud formation and
denitrification until mid-January. MIPAS-E observations
provide the first dataset with sufficient coverage of the
polar vortex in mid-winter which enables a reasonable
estimate of the timing of onset and spatial distribution of
denitrification of the Arctic lower stratosphere to be
performed. We use the observations from MIPAS-E to test the
evolution of denitrification in the DLAPSE (Denitrification
by Lagrangian Particle Sedimentation) microphysical
denitrification modelcoupled to the SLIMCAT chemical
transport model. In addition, the predicted denitrification
from a simple equilibrium nitric acid trihydrate-based
scheme is also compared with MIPAS-E. Modelled
denitrification is compared with in-vortex NOy and N2O
observations from the balloon-borne MarkIV interferometer in
mid-December. Denitrification was clearly observed by
MIPAS-E in mid-December 2002 and reached $80\%$ in the core
of the vortex by early January 2003. The DLAPSE model is
broadly able to capture both the timing of onset and the
spatial distribution of the observed denitrification. A
simple thermodynamic equilibrium scheme is able to reproduce
the observed denitrification in the core of the vortex but
overestimates denitrification closer to the vortex edge.
This study also suggests that the onset of denitrification
in simple thermodynamic schemes may be earlier than in the
MIPAS-E observations.},
keywords = {J (WoSType)},
cin = {ICG-I},
ddc = {550},
cid = {I:(DE-Juel1)VDB47},
pnm = {Atmosphäre und Klima},
pid = {G:(DE-Juel1)FUEK406},
shelfmark = {Meteorology $\&$ Atmospheric Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000239410200001},
url = {https://juser.fz-juelich.de/record/54034},
}