Tropospheric Chemistry: Instruments

ARNOLD on aircraft

ARNOLD deployed on NOAA WP-3D aircraft

ARNOLD (Atmospheric Ring-down Nitrogen Oxide Laser Detector)

Principle of the Measurement

Diode laser cavity ring down spectroscopy

Species Measured

NO3, NO5, NO2, NO, O3 (NOy under development)

Time Response / Detection Limit

1 second / 0.5 pptv NO3, 1 pptv N2O5, 50 pptv NO2

Field Projects

  • ICARTT 2004
  • Mesa 2005
  • TexAQS 2006
  • NO3/N2O5 Comp Julich 2007
  • Erie 2007
  • ICEALOT 2008
  • ACCRONIM 2009
  • CalNex 2010
  • NACHTT 2011
  • UBWOS 2012, 2013, 2014
  • SENEX 2013
  • Hong Kong 2013
  • FRAPPE 2014
  • WINTER 2015


Zach Decker, Steve Brown

Key Publications

Wagner, N. L., W. P. Dubé, R. A. Washenfelder, C. J. Young, I. B. Pollack, T. B. Ryerson, and S. S. Brown, Diode laser-based cavity ring-down instrument for NO3, N2O5, NO, NO2 and O3 from aircraft, Atmos. Meas. Tech., doi:10.5194/amt-4-1227-2011, 2011.

Fuchs, H., W. P. Dubé, S. J. Ciciora, and S. S. Brown, Determination of Inlet Transmission and Conversion Efficiencies for in Situ Measurements of the Nocturnal Nitrogen Oxides, NO3, N2O5 and NO2, via Pulsed Cavity Ring-Down Spectroscopy, Anal. Chem., doi:10.1021/ac8007253, 2008.

Dubé, W. P., S. S. Brown, H. D. Osthoff, M. R. Nunley, S. J. Ciciora, M. W. Paris, R. J. McLaughlin, and A. R. Ravishankara, Aircraft instrument for simultaneous, in-situ measurements of NO3 and N2O5 via cavity ring-down spectroscopy, Rev. Sci. Instr., doi:10.1063/1061.2176058, 2006.