HR: 14:55h
AN: A22E-05    [PDF]
TI: The Need for Closer Integration of Measurements and Models - Results from Modeling Aerosols in the East Asia Outflow
AU: * Carmichael, G R
EM: gcarmich@engineering.uiowa.edu
AF: Center for Global and Regional Environmental Research, University of Iowa, Iowa City, IA 52242 United States
AU: Tang, Y
EM: ytang@cgrer.uiowa.edu
AF: Center for Global and Regional Environmental Research, University of Iowa, Iowa City, IA 52242 United States
AU: Seinfeld, J H
EM: seinfeld@caltech.edu
AF: Department of Chemical Engineering, California Institute of Technology, Pasadena, CA 91125 United States
AU: Dabdub, D
EM: ddabdub@uci.edu
AF: Department of Mechanical and Aerospace Engineering, University of California at Irvine, Irvine, CA 92697 United States
AU: Weber, R J
EM: tweber@eas.gatech.edu
AF: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332 United States
AU: Huebert, B
EM: huebert@hawaii.edu
AF: School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI 96822 United States
AU: Clarke, A D
EM: tclarke@soest.hawaii.edu
AF: School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI 96822 United States
AU: Guazzotti, S A
EM: serad@chem.ucsd.edu
AF: Department of Chemistry and Biochemistry, University of California at San Diego, San Diego, CA 92093 United States
AU: Prather, K A
EM: kprather@ucsd.edu
AF: Department of Chemistry and Biochemistry, University of California at San Diego, San Diego, CA 92093 United States
AU: Sodeman, D A
EM: dsodeman@chem.ucsd.edu
AF: Department of Chemistry and Biochemistry, University of California at San Diego, San Diego, CA 92093 United States
AU: Uno, I
EM: iuno@riam.kyushu-u.ac.jp
AF: Research Institute for Applied Mechanics, Kyushu University, Fukuoka, 816-8580 Japan
AU: Woo, J
EM: woojh21@cgrer.uiowa.edu
AF: Center for Global and Regional Environmental Research, University of Iowa, Iowa City, IA 52242 United States
AU: Streets, D G
EM: dstreets@anl.gov
AF: Decision and Information Sciences Division, Argonne National Laboratory, Argonne, IL 60439 United States
AU: Quinn, P
EM: quinn@pmel.noaa.gov
AF: NOAA Pacific Marine Environmental Laboratory, 7600 Sand Point Way NE, Seattle, WA 98195 United States
AU: Johnson, J E
EM: johnson@pmel.noaa.gov
AF: NOAA Pacific Marine Environmental Laboratory, 7600 Sand Point Way NE, Seattle, WA 98195 United States
AU: Song, C
EM: cs222@mail.gatech.edu
AF: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332 United States
AU: Anderson, T L
EM: tadand@atmos.washington.edu
AF: Department of Atmospheric Science, University of Washington, Seattle, WA 98195 United States
AU: Sandu, A
EM: asandu@mtu.edu
AF: Department of Computer Science, Michigan Technological University, Houghton, MI 49931 United States
AU: Talbot, R W
EM: robert.talbot@unh.edu
AF: Department of Computer Science, Michigan Technological University, Houghton, MI 49931 United States
AU: Dibb, J E
EM: jack.dibb@unh.edu
AF: Department of Earth Sciences, University of New Hampshire, Durham, NH 03824 United States
AB: East Asia outflow contains primary aerosols arising from diverse sources including: wind-blown mineral dust, biomass/biofuel burning, sea salt spray, and combustion and construction. The outflow also contains large amounts of secondary particles (e.g., sulfate, nitrate and ammonium), which are produced from processes involving gas-phase pollutants emitted in East Asia. The TRACE-P and ACE-ASIA experiments have produced a comprehensive observation-based characterization of the aerosol and their precursors in East Asia. A three-dimensional regional scale model that incorporated an on-line, size-resolved, aerosol thermodynamics model (SCAPE-II) was used (STEM-2K3) was used to study the aerosol ion distributions, and factors that influence the composition-size relationships, in the East Asia outflow during the TRACE-P and ACE-ASIA periods. Results from the model were compared with various observations, and used to study how the aerosol composition changed as air masses travel off the continent and out over the western Pacific. The results presented in this paper indicate that present day models have substantial interpretive and diagnostic capabilities. However the results also point out that improvement in our predictive capability will require substantial reductions in uncertainties, and that closer integration of models and measurements is clearly needed. These issues will be the focus of this paper.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0322 Constituent sources and sinks
DE: 0365 Troposphere--composition and chemistry
DE: 0368 Troposphere--constituent transport and chemistry
DE: 3337 Numerical modeling and data assimilation
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting