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Tropospheric Chemistry: Instruments

Aircraft Instruments

Abbreviation

Full name

Species Measured

Method

Personnel

ACES

Airborne Cavity Enhanced Spectrometer

glyoxal (CHOCHO), nitrous acid (HONO), nitrogen dioxide (NO2)

Cavity enhanced absorption spectroscopy

Kyung-Eun Min, Bill Dubé, Steve Brown

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

Jeff Peischl, Tom Ryerson

CO2 / CH4

Carbon Dioxide and Methane

CO2 and CH4

Wavelength-scanned cavity ring down

Jeff Peischl, Tom Ryerson

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

Ilana Pollack, Jeff Peischl, Tom Ryerson

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, Laser Photo-Acoustic Spectroscopy, Chemical Ionization Mass Spectrometry

Joost deGouw, Carsten Warneke


Ship/Ground-based Instruments

Abbreviation

Full name

Method

Personnel

Acid CIMS

Acid Chemical Ionization Mass Spectrometer

Negative Ion Proton Transfer Chemical Ionization Mass Spectrometer

Jim Roberts

ACES

Airborne Cavity Enhanced Spectrometer

Glyoxal, HONO, NO2 using cavity enhanced absorption spectroscopy

Kyung-Eun Min, Bill Dubé, Steve Brown

BBCES

Broadband Cavity Enhanced Spectrometer

Aerosol extinction in the ultraviolet spectral region

Rebecca Washenfelder, Steve Brown

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

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, O3, NOy measured by diode laser cavity ring down

Rob Wild, Bill Dubé, 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 (various instruments)

Volatile Organic Compounds

Proton-Transfer-Reaction Mass Spectrometery, Proton-Transfer-Ion-Trap Mass Spectrometry, Laser Photo-Acoustic Spectroscopy, Chemical Ionization Mass Spectrometry

Joost deGouw, Carsten Warneke