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@BOOK{Smit:60217,
author = {Smit, Herman G. J. and Sträter, Wolfgang and Helten,
Manfred and Kley, Dieter},
title = {{E}nvironmental simulation facility to calibrate airborne
ozone and humidity sensors},
volume = {3796},
issn = {0944-2952},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {PreJuSER-60217, Juel-3796},
series = {Berichte des Forschungszentrums Jülich},
pages = {VII, 31 p.},
year = {2000},
note = {Record converted from VDB: 12.11.2012},
abstract = {The Environmental Simulation Facility established at the
Forschungszentrum Jülich (FZJ) is designed to investigate
the performance of different types of balloon borne sensors
as well as air borne humidity sensors to measure the
vertical distribution of atmospheric ozone and water vapor,
respectively. Key component of the facility is a temperature
and pressure controlled simulation chamber with a test room
volume of about 500 liter (80x80x80 cm) whereby pressure as
well as temperature can be dynamically regulated between 5
and 1000 hPa and between 200 and 300 K (-2K/min $\le$ rate
$\le$ +2K/min) respectively. The volume mixing ration of
ozone can be dynamically regulated between 5 and 10000 ppbv
up to a simulation altitude of about 35 km. The relative
humidity in the chamber can be varied from about 95 \% down
to 2 \% over a temperature range between +30$^{\circ}$C and
-70$^{\circ}$C and pressure range between 1000 and 100 hPa.
Ozone and humidity sensing devices can be calibrated against
accurate reference instruments. A fast response dual beam
UV-photometer serves as ozone reference. For the calibration
of the water vapor sensors a dew point hygrometer is used
for lower/middle tropospheric humidity conditions, while for
middle/upper tropospheric conditions a Lyman ($\alpha$)
fluorescence hygrometer seves as reference. The entire
simulation process is computer controlled to provide
reproducible conditions with respect to pressure,
temperature, ozone concentration and humidity. Since 1994
the chamber is used for the regular (monthly) calibration of
water vapor sensing devices which are flown aboard 5 civil
"in-service" aircraft (Airbus-A340) within the frame of the
European project MOZAIC (Measurement of Ozone and Water
Vapor on Airbus In-Service Aircraft) for automatic
monitoring of the water vapor distribution in the
troposphere. The facility is also established as World
Calibration Facility for Ozone Sondes (WCFOS) as part of the
Global Atmosphere Watch (GAW) profram of the World
Meteorological Organization (WMO). In the scope of this
frame work several intercomparison experiments, JOSIE (=
Jülich Ozone Sonde Intercomparison Experiment), were
conducted to assess the performance of the major types of
ozone sondes used within the global network of ozone
sounding stations. Furthermore, the facility serves as
platform to investigate the performance of new developed
airborne sensing devices.},
cin = {ICG-2},
cid = {I:(DE-Juel1)VDB52},
pnm = {Chemie der Belasteten Atmosphäre},
pid = {G:(DE-Juel1)FUEK72},
typ = {PUB:(DE-HGF)3},
url = {https://juser.fz-juelich.de/record/60217},
}