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@ARTICLE{Ttrai:185926,
author = {Tátrai, D. and Bozóki, Z. and Smit, H. and Rolf, C. and
Spelten, N. and Krämer, M. and Filges, A. and Gerbig, C.
and Gulyás, G. and Szabó, G.},
title = {{D}ual-channel photoacoustic hygrometer for airborne
measurements: background, calibration, laboratory and
in-flight intercomparison tests},
journal = {Atmospheric measurement techniques},
volume = {8},
number = {1},
issn = {1867-8548},
address = {Katlenburg-Lindau},
publisher = {Copernicus},
reportid = {FZJ-2015-00050},
pages = {33 - 42},
year = {2015},
abstract = {This paper describes a tunable diode laser-based
dual-channel photoacoustic (PA) humidity measuring system
primarily designed for aircraft-based environment research.
It is calibrated for total pressure and water vapor (WV)
volume mixing ratios (VMRs) possible during airborne
applications. WV VMR is calculated by using
pressure-dependent calibration curves and a cubic spline
interpolation method. Coverage of the entire atmospheric
humidity concentration range that might be encountered
during airborne measurements is facilitated by applying an
automated sensitivity mode switching algorithm. The
calibrated PA system was validated through laboratory and
airborne intercomparisons, which proved that the
repeatability, the estimated accuracy and the response time
of the system are 0.5 ppmV or $0.5\%$ of the actual reading
(whichever value is the greater), $5\%$ of the actual
reading within the VMR range of 1–12 000 ppmV and 2 s,
respectively. The upper detection limit of the system is
theoretically about 85 000 ppmV, limited only by
condensation of water vapor on the walls of the 318 K heated
PA cells and inlet lines, and was experimentally verified up
to 20 000 ppmV. The unique advantage of the presented system
is its applicability for simultaneous water vapor and total
water volume mixing ratio measurements.},
cin = {IEK-7 / IEK-8},
ddc = {550},
cid = {I:(DE-Juel1)IEK-7-20101013 / I:(DE-Juel1)IEK-8-20101013},
pnm = {244 - Composition and dynamics of the upper troposphere and
middle atmosphere (POF3-244)},
pid = {G:(DE-HGF)POF3-244},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000348977600003},
doi = {10.5194/amt-8-33-2015},
url = {https://juser.fz-juelich.de/record/185926},
}