HR: 1340h
AN: A23C-0828    [Abstracts]
TI: Regional and global CO and aerosol correlations: An integrated approach of surface, satellite, and aircraft measurements and model simulations
AU: * Bian, H
EM: bian@code916.gsfc.nasa.gov
AF: The Goddard Earth Sciences and Technology Center/University of Maryland, Baltimore County, Goddard Space Flight Center, NASA, Greenbelt, MD 20771 United States
AU: Duncan, B
EM: duncan@code916.gsfc.nasa.gov
AF: The Goddard Earth Sciences and Technology Center/University of Maryland, Baltimore County, Goddard Space Flight Center, NASA, Greenbelt, MD 20771 United States
AU: Chin, M
EM: chin@code916.gsfc.nasa.gov
AF: Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771 United States
AU: Kasibhatla, P
EM: psk9@ozone.env.duke.edu
AF: Nicholas School of the Environment and Earth Sciences, Duke University, Durham, NC 27708 United States
AB: We investigate regional and global CO and fine mode aerosol correlations by combining GOCART model simulations with various measurements from surface (CMDL /CO and AERONET / aerosol), satellite (MOPITT / CO and MODIS / aerosol), and aircraft. CO mixing ratios and aerosol concentrations are examined using surface and aircraft measurements on several representative regions. Satellite observations provide the comparisons of CO column and aerosol fine model AOD at global scale. Numerical model simulation allows us to compare CO and aerosol properties without temporal and spatial limitations and with the capability to trace emissions by isolating different sources. Our zonal mean comparisons support the previous findings that the variations of CO and aerosol properties are out of phase by several months over northern hemisphere middle latitudes where anthropogenic emissions dominate. Over the biomass burning regions, such as southern hemisphere (SH) extra-tropics, the concentration and column properties of CO and aerosol show more agreement. Long-term transport and local chemistry drive the biggest phase shift of CO and aerosol properties over remote SH ocean regions. There are much more complicated relationships of CO and aerosol properties over stations and small regions due to emission, transport, and local chemistry.
DE: 1600 GLOBAL CHANGE (New category)
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0345 Pollution--urban and regional (0305)
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting