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@ARTICLE{Hoyle:17117,
author = {Hoyle, C.R. and Marecal, V. and Russo, M.R. and Allen, G.
and Arteta, J. and Chemel, C. and Chipperfield, M.P. and
D'Amato, F. and Dessens, O. and Feng, W. and Hamilton, J.F.
and Harris, N.R.P. and Hosking, J.S. and Lewis, A.C. and
Morgenstern, O. and Peter, T. and Pyle, J.A. and Reddmann,
T. and Richards, N.A.D. and Telford, P.J. and Tian, W. and
Viciani, S. and Volz-Thomas, A. and Wild, O. and Yang, X.
and Zeng, G.},
title = {{R}epresentation of tropical deep convection in atmospheric
models - {P}art 2: {T}racer transport},
journal = {Atmospheric chemistry and physics},
volume = {11},
issn = {1680-7316},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {PreJuSER-17117},
pages = {8103 - 8131},
year = {2011},
note = {This work was supported with funding from the EU project
SCOUT-O3. CRH was partly funded by SNSF grant number
$200021_120175/1.$ NRPH thanks NERC for their Advanced
Research Fellowship. NADR is funded via NERC NCEO. The
CATT-BRAMS work was supported by the program LEFE/INSU in
France (projects UTLS-tropicale and Tropopause 2009) and was
performed using HPC resources of CINES under the allocation
2008-c2008012536 and 2009-c2009015036 made by GENCI (Grand
Equipement National de Calcul Intensif). PJT was supported
by NCEO (UK). We also thank NERC for funding the ACTIVE
project and the NERC Airborne Research and Survey Facility
(ARSF) for operational support of the Dornier-228 aircraft.
Furthermore, the ACTIVE and SCOUT-O3 Tropical campaigns
would not have been possible without the extensive support
of the Australian Bureau of Meteorology, in particular Peter
May at the Bureau of Meteorology Research Centre, Melbourne
and Lori Chappel at the Regional Forecasting Centre in
Darwin. We also thank the RAAF base, Darwin, for hosting the
aircraft and campaign base, and for their logistical
support.},
abstract = {The tropical transport processes of 14 different models or
model versions were compared, within the framework of the
SCOUT-O3 (Stratospheric-Climate Links with Emphasis on the
Upper Troposphere and Lower Stratosphere) project. The
tested models range from the regional to the global scale,
and include numerical weather prediction (NWP), chemical
transport, and chemistry-climate models. Idealised tracers
were used in order to prevent the model's chemistry schemes
from influencing the results substantially, so that the
effects of modelled transport could be isolated. We find
large differences in the vertical transport of very
short-lived tracers (with a lifetime of 6 h) within the
tropical troposphere. Peak convective outflow altitudes
range from around 300 hPa to almost 100 hPa among the
different models, and the upper tropospheric tracer mixing
ratios differ by up to an order of magnitude. The timing of
convective events is found to be different between the
models, even among those which source their forcing data
from the same NWP model (ECMWF). The differences are less
pronounced for longer lived tracers, however they could have
implications for modelling the halogen burden of the
lowermost stratosphere through transport of species such as
bromoform, or short-lived hydrocarbons into the lowermost
stratosphere. The modelled tracer profiles are strongly
influenced by the convective transport parameterisations,
and different boundary layer mixing parameterisations also
have a large impact on the modelled tracer profiles.
Preferential locations for rapid transport from the surface
into the upper troposphere are similar in all models, and
are mostly concentrated over the western Pacific, the
Maritime Continent and the Indian Ocean. In contrast, models
do not indicate that upward transport is highest over
western Africa.},
keywords = {J (WoSType)},
cin = {IEK-8},
ddc = {550},
cid = {I:(DE-Juel1)IEK-8-20101013},
pnm = {Atmosphäre und Klima},
pid = {G:(DE-Juel1)FUEK491},
shelfmark = {Meteorology $\&$ Atmospheric Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000293826500042},
doi = {10.5194/acp-11-8103-2011},
url = {https://juser.fz-juelich.de/record/17117},
}