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    A One-Dimensional Model Describing Aerosol Formation and Evolution in the Stratosphere: II. Sensitivity Studies and Comparison with Observations

    Source: Journal of the Atmospheric Sciences:;1979:;Volume( 036 ):;issue: 004::page 718
    Author:
    Toon, Owen B.
    ,
    Turco, R. P.
    ,
    Hamill, P.
    ,
    Kiang, C. S.
    ,
    Whitten, R. C.
    DOI: 10.1175/1520-0469(1979)036<0718:AODMDA>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: We have performed sensitivity tests on a one-dimensional physical-chemical model of the unperturbed stratospheric aerosols and have compared model calculations with observations. The sensitivity tests and comparisons with observations suggest that coagulation controls the particle number mixing ratio, although the number of condensation nuclei at the tropopause and the diffusion coefficient at high altitudes are also important. The sulfate mass and large particle number (r > 0.15 µm) mixing ratios are controlled by growth, sedimentation, evaporation at high altitudes and washout below the tropopause. The sulfur gas source strength and the aerosol residence time are much more important than the supply of condensation nuclei in establishing mass and large particle concentrations. The particle size is also controlled mainly by gas supply and residence time. OCS diffusion (not SO2diffusion) dominates the production of stratospheric H2SO4 particles during unperturbed times, although direct injection of SO2 into the stratosphere could be significant if it normally occurs regularly by some transport mechanism. We suggest a number of in-situ observations of the aerosols and laboratory measurements of aerosol parameters that can provide further information about the physics and chemistry of the stratosphere and the aerosols found there.
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      A One-Dimensional Model Describing Aerosol Formation and Evolution in the Stratosphere: II. Sensitivity Studies and Comparison with Observations

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4153609
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    • Journal of the Atmospheric Sciences

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    contributor authorToon, Owen B.
    contributor authorTurco, R. P.
    contributor authorHamill, P.
    contributor authorKiang, C. S.
    contributor authorWhitten, R. C.
    date accessioned2017-06-09T14:20:44Z
    date available2017-06-09T14:20:44Z
    date copyright1979/04/01
    date issued1979
    identifier issn0022-4928
    identifier otherams-17688.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4153609
    description abstractWe have performed sensitivity tests on a one-dimensional physical-chemical model of the unperturbed stratospheric aerosols and have compared model calculations with observations. The sensitivity tests and comparisons with observations suggest that coagulation controls the particle number mixing ratio, although the number of condensation nuclei at the tropopause and the diffusion coefficient at high altitudes are also important. The sulfate mass and large particle number (r > 0.15 µm) mixing ratios are controlled by growth, sedimentation, evaporation at high altitudes and washout below the tropopause. The sulfur gas source strength and the aerosol residence time are much more important than the supply of condensation nuclei in establishing mass and large particle concentrations. The particle size is also controlled mainly by gas supply and residence time. OCS diffusion (not SO2diffusion) dominates the production of stratospheric H2SO4 particles during unperturbed times, although direct injection of SO2 into the stratosphere could be significant if it normally occurs regularly by some transport mechanism. We suggest a number of in-situ observations of the aerosols and laboratory measurements of aerosol parameters that can provide further information about the physics and chemistry of the stratosphere and the aerosols found there.
    publisherAmerican Meteorological Society
    titleA One-Dimensional Model Describing Aerosol Formation and Evolution in the Stratosphere: II. Sensitivity Studies and Comparison with Observations
    typeJournal Paper
    journal volume36
    journal issue4
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/1520-0469(1979)036<0718:AODMDA>2.0.CO;2
    journal fristpage718
    journal lastpage736
    treeJournal of the Atmospheric Sciences:;1979:;Volume( 036 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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