HR: 13:40h
AN: A13I-01 INVITED    [Abstracts]
TI: Top-down constraints of volatile organic compound (VOC) emissions
AU: * Karl, T
EM: tomkarl@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Dr, Boulder, CO 80301,
AU: Guenther, A
EM: guenther@ucar.edu
AF: National Center for Atmospheric Research, 1850 Table Mesa Dr, Boulder, CO 80301,
AU: Jobson, T
AF: Washington State University, PO Box 642910, Pullman, WA 99164-2910, United States
AU: Velasco, E
AF: Washington State University, PO Box 642910, Pullman, WA 99164-2910, United States
AU: Lamb, B
AF: Washington State University, PO Box 642910, Pullman, WA 99164-2910, United States
AB: The ability to measure volatile organic compound (VOC) fluxes on tower and airborne platforms is assessed. Airborne flux measurements are compared with anthropogenic emission estimates for the Mexico City Basin. We have tested the feasibility of airborne flux measurements to investigate area sources over regional urban footprints, such as encountered in many Mega-cities, where bottom-up emission estimates are particularly uncertain. We demonstrate that these measurements could provide a useful top-down constraint on bottom-up emission estimates. Complementary to ground based flux measurements, airborne flux measurements could also play a key role in reducing uncertainties when mapping biogenic VOC emission models on to different land-cover databases in the future.
DE: 0315 Biosphere/atmosphere interactions (0426, 1610)
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting