Tropospheric Chemistry: Instruments

Aircraft Instruments

Abbreviation	Full name	Species Measured	Method	Personnel
AFSR	Actinic Flux SpectroRadiometer	Photolysis rates for many species	Measures solar radiation using spectroradiometers	Harald Stark
ARNOLD	Atmospheric Ring-down Nitrogen Oxide Laser Detector	NO3, N2O5, NO2, NO, O3	Cavity Ring Down Spectroscopy	Steve Brown, Bill Dubé
CO	Carbon Monoxide	CO	Vacuum UV resonance fluorescence	John Holloway
CO2	Carbon Dioxide	CO2	Absorption of infrared light	Tom Ryerson, Jeff Peischl
CO2 / CH4	Carbon Dioxide and Methane	CO2 and CH4	Wavelength-scanned cavity ring down	Tom Ryerson, Jeff Peischl
HNO3	Nitric Acid	HNO3	Chemical ionization mass spectrometery using SiF5- as reagent ion	Andy Neuman
NH3	Ammonia	NH3	Chemical Ionization Mass Spectrometry (CIMS) using protonated acetone dimer ((C3H6O)H+(C3H6O)) ion chemistry	John Nowak
NO/NO2/NOy/O3	Nitrogen Oxides and Ozone	NO, NO2, NOy, O3	Chemical reactions that produce near-infrared light	Tom Ryerson, Ilana Pollack, Jeff Peischl
PANs	Peroxyacyl Nitrates		Chemical ionization mass spectrometry using I^– as reagent ion	Jim Roberts
SO2	Sulfur Dioxide	SO2	Pulsed UV fluorescence	John Holloway
VOCs (various instruments)	Volatile organic compounds	Alkanes, Alkenes, Alkynes, Aromatics, Biogenic VOCs (isoprene, monoterpenes), Alcohols, Ketones, Aldehydes, Nitriles, Dimethyl sulfide, Halocarbons, Alkyl nitrates	Proton-Transfer-Reaction Mass Spectrometery, Proton-Transfer-Ion-Trap Mass Spectrometry, Chemical Ionization Mass Spectrometry	Joost deGouw, Carsten Warneke

Abbreviation	Full name	Method	Personnel
Acids	Acid CIMS	Negative Ion Proton Transfer Chemical Ionization Mass Spectrometer	Jim Roberts
CO	Mobile Atmosphere-Biosphere Environmental Laboratory Carbon monoxide	Vacuum-UV resonance fluorescence	Brian Lerner
CO2	Mobile Atmosphere-Biosphere Environmental Laboratory Carbon dioxide	Non-dispersive IR absorbance	Brian Lerner
j-values	Mobile Atmosphere-Biosphere Environmental Laboratory Photolysis rates	Filter radiometry	Brian Lerner
IBBCEAS	Incoherent Broadband Cavity Enhanced Absorption Spectroscopy	Glyoxal, HONO using differential optical absorption spectrospectry and cavity ring-down spectroscopy	Rebecca Washenfelder, Cora Young, Steve Brown
NOx	Mobile Atmosphere-Biosphere Environmental Laboratory Nitric oxides	Photolysis/chemiluminescence	Brian Lerner
NOy	Total reactive nitrogen oxides	Au tube/chemiluminescence	Eric Williams
O3	Ozone	UV absorbance	Eric Williams
O3	Ozone	NO chemiluminescence	Eric Williams
NOxCaRD	Nitrogen Oxides by Cavity Ring Down	NO, NO2 measured by diode laser cavity ring-down	Nick Wagner, Brian Lerner, Eric Williams, Steve Brown
PANs	Peroxyacyl nitric anhydrides	Chemical ionization mass spectrometry	Jim Roberts
RONALD	Reactive Oxides of Nitrogen	NO3, N2O5 measured by Cavity Ring Down Spectroscopy	Nick Wagner, Steve Brown
SO2	Sulfur dioxide	Pulsed UV fluorescence	Eric Williams
VOCs GCMS	Volatile Organic Compounds	speciation with a gas chromatogram	Jessica Gilman
VOCs GC/PITMS	Volatile Organic Compounds	proton-transfer ion trap-mass spectrometry	Carsten Warneke