HR: 14:15h
AN: B42B-03    [PDF]
TI: Airborne Flask Measurements of O$_{2}$/N$_{2}$, Ar/N$_{2}$, CO$_{2}$ and Other Species During COBRA-NA 2003
AU: * Graven, H D
EM: hgraven@ucsd.edu
AF: Scripps Institution of Oceanography, 9500 Gilman Dr. UCSD MC 0244, La Jolla, CA 92093-0244 United States
AU: Stephens, B B
EM: stephens@ucar.edu
AF: National Center for Atmospheric Research, Atmospheric Technology Division P.O. Box 3000, 1850 Table Mesa Dr., Boulder, CO 80307-3000 United States
AU: Miller, J B
EM: john.b.miller@noaa.gov
AF: NOAA/CMDL, R/CMDL1 325 Broadway, Boulder, CO 80305 United States
AU: Keeling, R F
EM: rkeeling@ucsd.edu
AF: Scripps Institution of Oceanography, 9500 Gilman Dr. UCSD MC 0244, La Jolla, CA 92093-0244 United States
AU: Gerbig, C
EM: gerbig@fas.harvard.edu
AF: Harvard University, 29 Oxford St., Cambridge, MA 02138 United States
AU: Lin, J C
EM: johnlin@fas.harvard.edu
AF: Harvard University, 29 Oxford St., Cambridge, MA 02138 United States
AU: Wofsy, S C
EM: wofsy@fas.harvard.edu
AF: Harvard University, 29 Oxford St., Cambridge, MA 02138 United States
AB: We present measurements of O$_{2}$/N$_{2}$, Ar/N$_{2}$, CO$_{2}$, CH$_{4}$, CO, N$_{2}$O, H$_{2}$, SF$_{6}$, and $\delta$$^{13}$C and $\delta$$^{18}$O of CO$_{2}$ in airborne flask samples collected during the CO$_{2}$ Budget and Regional Airborne Study, which was conducted in North America over late May and June 2003 to develop methods of observing and modeling large scale fluxes of CO$_{2}$ and other atmospheric gases. Performed on the University of North Dakota Cessna Citation II, the campaign consisted of two circuits around North America, including regional flights over Harvard Forest, ARM-CART, and coastal areas of Northern California, Maine and Texas. The data from 350 sampled flasks will be interpreted for regional-scale surface fluxes of these species and as tracers to separate terrestrial, industrial, biomass-burning and oceanic contributions to variations and fluxes of CO$_{2}$ and CO. In addition, the understanding of vertical and horizontal transport and mixing of various flux signals that is enabled by our measurements is critical to scaling-up surface and airborne CO$_{2}$ flux measurements to basin scale.
DE: 0315 Biosphere/atmosphere interactions
DE: 0365 Troposphere--composition and chemistry
DE: 0368 Troposphere--constituent transport and chemistry
SC: Biogeosciences [B]
MN: 2003 Fall Meeting