HR: 1330h
AN: A32A-0115    [PDF]
TI: Virtual Disjunct Eddy Covariance Flux Measurements of Biogenic Volatile Organic Compounds from Ponderosa and Loblolly Pine Forests using Proton Transfer Reaction Mass Spectrometry
AU: * Jardine, K J
EM: kolby.jardine@sdsmt.edu
AF: South Dakota School of Mines and Technology, 501 East Saint Joseph Street, Rapid City, SD 57701 United States
AU: Baker, B
EM: brad.baker@sdsmt.edu
AF: South Dakota School of Mines and Technology, 501 East Saint Joseph Street, Rapid City, SD 57701 United States
AB: Biogenic emissions of trace organic compounds into the atmosphere impact the levels of oxidants such as ozone and hydroxyl radicals and effects secondary organic aerosol formation. In an attempt to quantify these emissions, we used the virtual disjunct eddy covariance method and a Proton Transfer Reaction Mass Spectrometer (PTR-MS) during two summer 2003 field campaigns to measure the flux of several biogenic volatile organic compounds (VOCs). The first campaign was part of the CELTIC study in a North Carolina Loblolly pine plantation (Duke Forest) designed to study Chemical Emission, Loss, Transformation, and Interactions within Canopies. The second campaign was at the Black Hills Ameriflux Tower near Rapid City, South Dakota. Significant fluxes of acetaldehyde, isoprene, acetone, methanol, methylbutenol, and monoterpenes were measured and a comparison between isoprene flux measurements from the PTR-MS and a Fast Isoprene System was performed. Compound identities were verified using gas chromatography with a PTR-MS as the detector.
UR: http://acd.ucar.edu/~cstroud/CELTIC/
DE: 0315 Biosphere/atmosphere interactions
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting