HR: 09:30h
AN: A11C-07    [PDF]
TI: A Global Survey of the CO Emissions of Boreal Fires From MOPITT Data
AU: * Gille, J
EM: gille@ucar.edu
AF: National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000 United States
AU: * Gille, J
EM: gille@ucar.edu
AF: University of Colorado, CLAS 3300 Mitchell Lane, Boulder, CO 80301 United States
AU: Yudin, V
EM: vyudin@ucar.edu
AF: National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000 United States
AU: Lyjak, L
EM: lvl@ucar.edu
AF: National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000 United States
AU: Edwards, D
EM: edwards@ncar.ucar.edu
AF: National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000 United States
AU: Emmons, L
EM: emmons@acd.ucar.edu
AF: National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000 United States
AU: Deeter, M
EM: mnd@eos.ucar.edu
AF: National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000 United States
AU: Petron, G
EM: gap@ucar.edu
AF: National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000 United States
AU: Khattatov, B
EM: boris@ucar.edu
AF: National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000 United States
AU: Lamarque, J
EM: lamar@ucar.edu
AF: National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000 United States
AB: Retrievals of radiances obtained by the Measurements Of Pollution In The Troposphere (MOPITT) instrument on the Terra spacecraft have yielded determinations of the global distribution of CO from March 2000 to the present. These data have been used to evaluate the contributions of Boreal fires to the CO background in the Northern Hemisphere. Time series of the CO concentrations in the lower and upper troposphere over the latitude band from $40\deg$-$70\deg$N are used to show the seasonal cycle in CO mixing ratios, and the cycle in short-term variability, off the east coasts of Asia and North America. These show the largest CO concentrations in spring, as well as the strong variability of CO concentrations during episodic production from fires. The resulting CO is transported over intercontinental distances in timescales ranging upward from a week (in spring). The inter-annual variation of CO can be quantified for the 2000-2003 period. For March 2000-April 2001 the data will be compared with the results of assimilating CO retrievals into a chemistry-transport model. This illustrates the additional information that the assimilation can add at high latitudes, where the retrieved results are depend more strongly on the a priori information.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0365 Troposphere--composition and chemistry
DE: 0368 Troposphere--constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting