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@ARTICLE{Lamquin:22397,
author = {Lamquin, N. and Stubenrauch, C.J. and Gierens, K. and
Burkhardt, U. and Smit, H.},
title = {{A} global climatology of upper-tropospheric ice
supersaturation occurence inferred from the {A}tmospheric
{I}nfrared {S}ounder calibrated by {MOZAIC}},
journal = {Atmospheric chemistry and physics},
volume = {12},
issn = {1680-7316},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {PreJuSER-22397},
pages = {381 - 405},
year = {2012},
note = {This work was supported by CNRS and Ecole Polytechnique.
The AIRS version 5 data were obtained through the Goddard
Earth Sciences Data and Information Services
(http://daac.gsfc.nasa.gov/) and the CALIOP data were
obtained through the Atmospheric Sciences Data Center (ASDC)
at NASA Langley Research Center by the ICARE Thematic Center
created by CNES (http://www-icare.univ-lille1.fr/) and its
interface ClimServ created for Institut Pierre-Simon Laplace
(http://climserv.ipsl.polytechnique.fr/). The authors
acknowledge for the strong support of the European
Commission, Airbus, and the Airlines (Lufthansa, Austrian,
Air France) who carry free of charge the MOZAIC equipment
and perform the maintenance since 1994. MOZAIC is presently
funded by INSU-CNRS (France), Meteo-France, and
Forschungszentrum (FZJ, Julich, Germany). The MOZAIC data
base is supported by ETHER (CNES and INSU-CNRS). ECMWF data
have been retrieved within the framework of a special
project on "Ice Supersaturation and Cirrus Clouds
(SPDEISSR)". The authors thank all the corresponding teams
for assistance and public release of data products. The work
contributes to COST Action ES-0604 "Water Vapour in the
Climate System (WaVaCS)" and to the aforementioned SPDEISSR.
The authors thank the reviewers for their fruitful
comments.The publication of this article is financed by
CNRS-INSU.},
abstract = {Ice supersaturation in the upper troposphere is a complex
and important issue for the understanding of cirrus cloud
formation. On one hand, infrared sounders have the ability
to provide cloud properties and atmospheric profiles of
temperature and humidity. On the other hand, they suffer
from coarse vertical resolution, especially in the upper
troposphere and therefore are unable to detect shallow ice
supersaturated layers. We have used data from the
Measurements of OZone and water vapour by AIrbus in-service
airCraft experiment (MOZAIC) in combination with Atmospheric
InfraRed Sounder (AIRS) relative humidity measurements and
cloud properties to develop a calibration method for an
estimation of occurrence frequencies of ice supersaturation.
This method first determines the occurrence probability of
ice supersaturation, detected by MOZAIC, as a function of
the relative humidity determined by AIRS. The occurrence
probability function is then applied to AIRS data,
independently of the MOZAIC data, to provide a global
climatology of upper-tropospheric ice supersaturation
occurrence. Our climatology is then compared to ice
supersaturation occurrence statistics from MOZAIC alone and
related to high cloud occurrence from the Cloud-Aerosol
Lidar with Orthogonal Polarization (CALIOP). As an example
of application it is compared to model climatologies of ice
supersaturation from the Integrated Forecast System (IFS) of
the European Centre for Medium-Range Weather Forecasts
(ECMWF) and from the European Centre HAmburg Model (ECHAM4).
This study highlights the benefits of multi-instrumental
synergies for the investigation of upper tropospheric ice
supersaturation.},
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:000300320200021},
doi = {10.5194/acp-12-381-2012},
url = {https://juser.fz-juelich.de/record/22397},
}