HR: 1340h
AN: A33E-1652    [Abstracts]
TI: Space Observations Reveal Biogenic Aerosols Dominate in Southeastern US
AU: * Koven, C D
EM: charlie@atmos.berkeley.edu
AF: University of California, Berkeley, 301 McCone Hall, Berkeley, CA 94720-4767, United States
AU: Goldstein, A H
EM: ahg@nature.berkeley.edu
AF: University of California, Berkeley, 301 McCone Hall, Berkeley, CA 94720-4767, United States
AU: Heald, C L
EM: heald@atmos.berkeley.edu
AF: University of California, Berkeley, 301 McCone Hall, Berkeley, CA 94720-4767, United States
AU: Fung, I I
EM: ifung@berkeley.edu
AF: University of California, Berkeley, 301 McCone Hall, Berkeley, CA 94720-4767, United States
AB: Space-based remote sensing of aerosols over North America show a pattern indicative of emission sources in addition to known industrial emissions. In particular, the spatial and temporal distribution of aerosols over the southeastern United States matches the spatial and seasonal distribution of biogenic volatile organic compound (BVOC) emissions, varies with surface temperature consistent with origins from oxidation of BVOCs, and dominates over summertime anthropogenic aerosol sources in the region. The observed aerosol optical thickness implies that this secondary aerosol source is climatically relevant with significant potential for a negative climate feedback as BVOC emissions increase with temperature.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0315 Biosphere/atmosphere interactions (0426, 1610)
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 3309 Climatology (1616, 1620, 3305, 4215, 8408)
DE: 3360 Remote sensing
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting