HR: 14:25h
AN: A53C-04    [Abstracts]
TI: Long-range transport of pollution as seen in EOS MLS upper tropospheric observations
AU: * Li, Q
EM: Qinbin.Li@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr. M/S 183-501, Pasadena, CA 91109 United States
AU: Filipiak, M
EM: mjf@met.ed.ac.uk
AF: University of Edinburgh, Crew Building, West Mains Rd., Edinburgh, EH9 3JZ United Kingdom
AU: Richards, N
EM: Nigel.Richards@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr. M/S 183-501, Pasadena, CA 91109 United States
AU: Jiang, J
EM: jonathan@mls.jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr. M/S 183-501, Pasadena, CA 91109 United States
AU: Waters, J
EM: joe@mls.jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr. M/S 183-501, Pasadena, CA 91109 United States
AB: Upper tropospheric observations of carbon monoxide (CO) and ozone (O3) from the EOS MLS onboard Aura are examined for long-range transport of pollution in the upper troposphere. MLS retrievals of CO and O3 from August 2004-August 2005 are analyzed and compared with results from the GEOS-Chem global 3D chemical transport model driven by assimilated meteorology. We focus our analysis on the seasonal variability of long-range pollution transport in the upper troposphere, with particuar attention to convective outflow of anthropogenic and biomass burning emissions. Deep convective regions are identified with outgoing longwave radiation (OLR) and convective cloud top pressures. Isentropic trajectories are used to better understand the main transport pathways. We also examine the CO-O3 correlation to estimate O3 production efficiency and to separate out stratospheric influence.Additionally, we compare the seasonal distributions of upper tropospheric CO and cloud ice water content(IWC) measured by MLS to gain insights into the potential impact of convective pollution on high (cirrus) clouds.
DE: 0322 Constituent sources and sinks
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005