Tropospheric Chemistry: Instruments

SO2 instrument on aircraft

SO2 instrument installed in rack on NOAA WP-3D aircraft.

Sulfur dioxide (SO2)

Principle of the Measurement

Pulsed ultraviolent fluorescence

Species Measured


Time Response / Detection Limit

0.5 Hz / 0.5 ppbv


Thermo Electron Corporation (TECO)

Field Projects

  • SOS 1999
  • TexAQS 2000
  • ITCT 2002
  • ICARTT 2004
  • MILAGRO 2006
  • TexAQS 2006
  • ARCPAC 2008
  • Erie Tower 2008
  • CalNex 2010
  • SENEX 2013


John Holloway

Key Publications

Ryerson, T. B., M. P. Buhr, G. J. Frost, P. D. Goldan, J. S. Holloway, G. Hübler, B. T. Jobson, W. C. Kuster, S. A. McKeen, D. D. Parrish, J. M. Roberts, D. T. Sueper, M. Trainer, J. Williams, F. C. Fehsenfeld, Emissions lifetimes and ozone formation in power plant plumes, Journal of Geophysical Research, 103(D17), 22569-22583, doi:10.1029/98JD01620, 1998.