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@ARTICLE{Min:279347,
author = {Min, K.-E. and Washenfelder, R. A. and Dubé, W. P. and
Langford, A. O. and Edwards, P. M. and Zarzana, K. J. and
Stutz, J. and Lu, K. and Rohrer, F. and Zhang, Y. and Brown,
S. S.},
title = {{A} broadband cavity enhanced absorption spectrometer for
aircraft measurements of glyoxal, methylglyoxal, nitrous
acid, nitrogen dioxide, and water vapor},
journal = {Atmospheric measurement techniques discussions},
volume = {8},
number = {10},
issn = {1867-8610},
address = {Katlenburg-Lindau},
publisher = {Copernicus},
reportid = {FZJ-2015-07359},
pages = {11209 - 11254},
year = {2015},
abstract = {We describe a two-channel broadband cavity enhanced
absorption spectrometer (BBCEAS) for aircraft measurements
of glyoxal (CHOCHO), methylglyoxal (CH3COCHO), nitrous acid
(HONO), nitrogen dioxide (NO2), and water (H2O). The
instrument spans 361–389 and 438–468 nm, using two light
emitting diodes (LEDs) and a grating spectrometer with a
charge-coupled device (CCD) detector. Robust performance is
achieved using a custom optical mounting system, high power
LEDs with electronic on/off modulation, state-of-the-art
cavity mirrors, and materials that minimize analyte surface
losses. We have successfully deployed this instrument during
two aircraft and two ground-based field campaigns to date.
The demonstrated precision (2σ) for retrievals of CHOCHO,
HONO and NO2 are 34, 350 and 80 pptv in 5 s. The accuracy is
5.8, 9.0 and 5.0 $\%$ limited mainly by the available
absorption cross sections.},
cin = {IEK-8},
ddc = {550},
cid = {I:(DE-Juel1)IEK-8-20101013},
pnm = {243 - Tropospheric trace substances and their
transformation processes (POF3-243)},
pid = {G:(DE-HGF)POF3-243},
typ = {PUB:(DE-HGF)16},
doi = {10.5194/amtd-8-11209-2015},
url = {https://juser.fz-juelich.de/record/279347},
}