% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Khosrawi:44177,
author = {Khosrawi, F. and Grooß, J.-U. and Müller, R. and Konopka,
Paul and Kouker, W. and Ruhnke, R. and Reddmann, T. and
Riese, M.},
title = {{I}ntercomparison between {L}agrangian and {E}ulerian
simulations of the development of mid-latitude streamers as
observed by {CRISTA}},
journal = {Atmospheric chemistry and physics},
volume = {5},
issn = {1680-7316},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {PreJuSER-44177},
pages = {85 - 95},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {During the CRISTA-1 mission three pronounced fingerlike
structures reaching from the lower latitudes to the
mid-latitudes, so-called streamers, were observed in the
measurements of several trace gases in early November 1994.
A simulation of these streamers in previous studies
employing the KASIMA (Karlsruhe Simulation Model of the
Middle Atmosphere) and ROSE ( Research on Ozone in the
Stratosphere and its Evolution) model, both being Eulerian
models, show that their formation is due to adiabatic
transport processes. Here, the impact of mixing on the
development of these streamers is investigated. These
streamers were simulated with the CLaMS model ( Chemical
Lagrangian Model of the Stratosphere), a Lagrangian model,
using N2O as long-lived tracer. Using several different
initialisations the results were compared to the KASIMA
simulations and CRISTA ( Cryogenic Infrared Spectrometer and
Telescope for the Atmosphere) observations. Further, since
the KASIMA model was employed to derive a 9-year
climatology, the quality of the reproduction of streamers
from such a study was tested by the comparison of the KASIMA
results with CLaMS and CRISTA. The streamers are reproduced
well for the Northern Hemisphere in the simulations of CLaMS
and KASIMA for the 6 November 1994. However, in the CLaMS
simulation a stronger filamentation is found while larger
discrepancies between KASIMA and CRISTA were found
especially for the Southern Hemisphere. Further, compared to
the CRISTA observations the mixing ratios of N2O are in
general underestimated in the KASIMA simulations. An
improvement of the simulations with KASIMA was obtained for
a simulation time according to the length of the CLaMS
simulation. To quantify the differences between the
simulations with CLaMS and KASIMA, and the CRISTA
observations, the probability density function technique
(PDF) is used to interpret the tracer distributions. While
in the PDF of the KASIMA simulation the small scale
structures observed by CRISTA are smoothed out due to the
numerical diffusion in the model, the PDFs derived from
CRISTA observations can be reproduced by CLaMS by optimising
the mixing parameterisation. Further, this procedure gives
information on small-scale variabilities not resolved by the
CRISTA observations.},
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:000226449400003},
url = {https://juser.fz-juelich.de/record/44177},
}