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An intercomparison and evaluation of aircraft-derived and simulated CO from seven chemical transport models during the TRACE-P experiment

Kiley, C M and Fuelberg, H E and Palmer, P I and Allen, D J and Carmichael, G R and Jacob, D J and Mari, C and Pierce, R B and Pickering, K E and Tang, Y H and Wild, O and Fairlie, T D and Logan, J A and Sachse, G W and Shaack, T K and Streets, D G (2003) An intercomparison and evaluation of aircraft-derived and simulated CO from seven chemical transport models during the TRACE-P experiment. Journal of Geophysical Research: Atmospheres, 108 (D21). -. ISSN 0747-7309

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    Abstract

    Four global scale and three regional scale chemical transport models are intercompared and evaluated during NASA's Transport and Chemical Evolution over the Pacific (TRACE-P) experiment. Model simulated and measured CO are statistically analyzed along aircraft flight tracks. Results for the combination of 11 flights show an overall negative bias in simulated CO. Biases are most pronounced during large CO events. Statistical agreements vary greatly among the individual flights. Those flights with the greatest range of CO values tend to be the worst simulated. However, for each given flight, the models generally provide similar relative results. The models exhibit difficulties simulating intense CO plumes. CO error is found to be greatest in the lower troposphere. Convective mass flux is shown to be very important, particularly near emissions source regions. Occasionally meteorological lift associated with excessive model-calculated mass fluxes leads to an overestimation of middle and upper tropospheric mixing ratios. Planetary Boundary Layer (PBL) depth is found to play an important role in simulating intense CO plumes. PBL depth is shown to cap plumes, confining heavy pollution to the very lowest levels.

    Item Type: Article
    Journal or Publication Title: Journal of Geophysical Research: Atmospheres
    Uncontrolled Keywords: GENERAL-CIRCULATION MODEL ; TROPICAL SOUTH ATLANTIC ; ISENTROPIC-SIGMA MODEL ; ATMOSPHERIC CHEMISTRY ; DEPOSITION ; OZONE ; ASIA ; EMISSIONS ; AEROSOLS ; BIOMASS
    Subjects:
    Departments: Faculty of Science and Technology > Lancaster Environment Centre
    ID Code: 49588
    Deposited By: ep_importer_pure
    Deposited On: 07 Sep 2011 14:12
    Refereed?: Yes
    Published?: Published
    Last Modified: 17 Sep 2013 08:27
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/49588

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