A broadband cavity enhanced absorption spectrometer for aircraft measurements of glyoxal, methylglyoxal, nitrous acid, nitrogen dioxide, and water vapor

K. E. Min; R. A. Washenfelder; W. P. Dubé; A. O. Langford; P. M. Edwards; K. J. Zarzana; J. Stutz; K. Lu; F. Rohrer; Y. Zhang; S. S. Brown

doi:10.5194/amt-9-423-2016

A broadband cavity enhanced absorption spectrometer for aircraft measurements of glyoxal, methylglyoxal, nitrous acid, nitrogen dioxide, and water vapor

K. E. Min
, R. A. Washenfelder
, W. P. Dubé
, A. O. Langford
, P. M. Edwards
, K. J. Zarzana
, J. Stutz
, K. Lu
, F. Rohrer
, Y. Zhang
, S. S. Brown

Experimental Science Section

University of Colorado Boulder
National Oceanic and Atmospheric Administration
Gwangju Institute of Science and Technology
University of York
University of California at Los Angeles
Peking University
Jülich Research Centre

Research output: Contribution to journal › Article › peer-review

93 Scopus citations

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 single 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, high-reflectivity 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 (2 σ ) for retrievals of CHOCHO, HONO and NO₂ are 34, 350, and 80 parts per trillion (pptv) in 5 s. The accuracy is 5.8, 9.0, and 5.0 %, limited mainly by the available absorption cross sections.

Original language	English
Pages (from-to)	423-440
Number of pages	18
Journal	Atmospheric Measurement Techniques
Volume	9
Issue number	2
DOIs	https://doi.org/10.5194/amt-9-423-2016
State	Published - Feb 11 2016

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Min, K. E., Washenfelder, R. A., Dubé, W. P., Langford, A. O., Edwards, P. M., Zarzana, K. J., Stutz, J., Lu, K., Rohrer, F., Zhang, Y., & Brown, S. S. (2016). A broadband cavity enhanced absorption spectrometer for aircraft measurements of glyoxal, methylglyoxal, nitrous acid, nitrogen dioxide, and water vapor. Atmospheric Measurement Techniques, 9(2), 423-440. https://doi.org/10.5194/amt-9-423-2016

@article{ed99177be2e245098e6d072507ef43e3,

title = "A broadband cavity enhanced absorption spectrometer for aircraft measurements of glyoxal, methylglyoxal, nitrous acid, nitrogen dioxide, and water vapor",

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 single 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, high-reflectivity 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 (2 σ ) for retrievals of CHOCHO, HONO and NO2 are 34, 350, and 80 parts per trillion (pptv) in 5 s. The accuracy is 5.8, 9.0, and 5.0 \%, limited mainly by the available absorption cross sections.",

author = "Min, \{K. E.\} and Washenfelder, \{R. A.\} and Dub{\'e}, \{W. P.\} and Langford, \{A. O.\} and Edwards, \{P. M.\} and Zarzana, \{K. J.\} and J. Stutz and K. Lu and F. Rohrer and Y. Zhang and Brown, \{S. S.\}",

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doi = "10.5194/amt-9-423-2016",

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Min, KE, Washenfelder, RA, Dubé, WP, Langford, AO, Edwards, PM, Zarzana, KJ, Stutz, J, Lu, K, Rohrer, F, Zhang, Y & Brown, SS 2016, 'A broadband cavity enhanced absorption spectrometer for aircraft measurements of glyoxal, methylglyoxal, nitrous acid, nitrogen dioxide, and water vapor', Atmospheric Measurement Techniques, vol. 9, no. 2, pp. 423-440. https://doi.org/10.5194/amt-9-423-2016

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T1 - A broadband cavity enhanced absorption spectrometer for aircraft measurements of glyoxal, methylglyoxal, nitrous acid, nitrogen dioxide, and water vapor

AU - Min, K. E.

AU - Washenfelder, R. A.

AU - Dubé, W. P.

AU - Langford, A. O.

AU - Edwards, P. M.

AU - Zarzana, K. J.

AU - Stutz, J.

AU - Lu, K.

AU - Rohrer, F.

AU - Zhang, Y.

AU - Brown, S. S.

PY - 2016/2/11

Y1 - 2016/2/11

N2 - 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 single 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, high-reflectivity 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 (2 σ ) for retrievals of CHOCHO, HONO and NO2 are 34, 350, and 80 parts per trillion (pptv) in 5 s. The accuracy is 5.8, 9.0, and 5.0 %, limited mainly by the available absorption cross sections.

AB - 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 single 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, high-reflectivity 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 (2 σ ) for retrievals of CHOCHO, HONO and NO2 are 34, 350, and 80 parts per trillion (pptv) in 5 s. The accuracy is 5.8, 9.0, and 5.0 %, limited mainly by the available absorption cross sections.

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DO - 10.5194/amt-9-423-2016

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AN - SCOPUS:84958960895

SN - 1867-1381

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JO - Atmospheric Measurement Techniques

JF - Atmospheric Measurement Techniques

IS - 2

ER -

A broadband cavity enhanced absorption spectrometer for aircraft measurements of glyoxal, methylglyoxal, nitrous acid, nitrogen dioxide, and water vapor

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