YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • AMS
    • Journal of the Atmospheric Sciences
    • View Item
    •   YE&T Library
    • AMS
    • Journal of the Atmospheric Sciences
    • View Item
    • All Fields
    • Source Title
    • Year
    • Publisher
    • Title
    • Subject
    • Author
    • DOI
    • ISBN
    Advanced Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Archive

    A Particle-Surface-Area-Based Parameterization of Immersion Freezing on Desert Dust Particles

    Source: Journal of the Atmospheric Sciences:;2012:;Volume( 069 ):;issue: 010::page 3077
    Author:
    Niemand, Monika
    ,
    Möhler, Ottmar
    ,
    Vogel, Bernhard
    ,
    Vogel, Heike
    ,
    Hoose, Corinna
    ,
    Connolly, Paul
    ,
    Klein, Holger
    ,
    Bingemer, Heinz
    ,
    DeMott, Paul
    ,
    Skrotzki, Julian
    ,
    Leisner, Thomas
    DOI: 10.1175/JAS-D-11-0249.1
    Publisher: American Meteorological Society
    Abstract: n climate and weather models, the quantitative description of aerosol and cloud processes relies on simplified assumptions. This contributes major uncertainties to the prediction of global and regional climate change. Therefore, models need good parameterizations for heterogeneous ice nucleation by atmospheric aerosols. Here the authors present a new parameterization of immersion freezing on desert dust particles derived from a large number of experiments carried out at the Aerosol Interaction and Dynamics in the Atmosphere (AIDA) cloud chamber facility. The parameterization is valid in the temperature range between ?12° and ?36°C at or above water saturation and can be used in atmospheric models that include information about the dust surface area. The new parameterization was applied to calculate distribution maps of ice nuclei during a Saharan dust event based on model results from the regional-scale model Consortium for Small-Scale Modelling?Aerosols and Reactive Trace Gases (COSMO-ART). The results were then compared to measurements at the Taunus Observatory on Mount Kleiner Feldberg, Germany, and to three other parameterizations applied to the dust outbreak. The aerosol number concentration and surface area from the COSMO-ART model simulation were taken as input to different parameterizations. Although the surface area from the model agreed well with aerosol measurements during the dust event at Kleiner Feldberg, the ice nuclei (IN) number concentration calculated from the new surface-area-based parameterization was about a factor of 13 less than IN measurements during the same event. Systematic differences of more than a factor of 10 in the IN number concentration were also found among the different parameterizations. Uncertainties in the modeled and measured parameters probably both contribute to this discrepancy and should be addressed in future studies.
    • Download: (4.015Mb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      A Particle-Surface-Area-Based Parameterization of Immersion Freezing on Desert Dust Particles

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4218796
    Collections
    • Journal of the Atmospheric Sciences

    Show full item record

    contributor authorNiemand, Monika
    contributor authorMöhler, Ottmar
    contributor authorVogel, Bernhard
    contributor authorVogel, Heike
    contributor authorHoose, Corinna
    contributor authorConnolly, Paul
    contributor authorKlein, Holger
    contributor authorBingemer, Heinz
    contributor authorDeMott, Paul
    contributor authorSkrotzki, Julian
    contributor authorLeisner, Thomas
    date accessioned2017-06-09T16:54:35Z
    date available2017-06-09T16:54:35Z
    date copyright2012/10/01
    date issued2012
    identifier issn0022-4928
    identifier otherams-76358.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4218796
    description abstractn climate and weather models, the quantitative description of aerosol and cloud processes relies on simplified assumptions. This contributes major uncertainties to the prediction of global and regional climate change. Therefore, models need good parameterizations for heterogeneous ice nucleation by atmospheric aerosols. Here the authors present a new parameterization of immersion freezing on desert dust particles derived from a large number of experiments carried out at the Aerosol Interaction and Dynamics in the Atmosphere (AIDA) cloud chamber facility. The parameterization is valid in the temperature range between ?12° and ?36°C at or above water saturation and can be used in atmospheric models that include information about the dust surface area. The new parameterization was applied to calculate distribution maps of ice nuclei during a Saharan dust event based on model results from the regional-scale model Consortium for Small-Scale Modelling?Aerosols and Reactive Trace Gases (COSMO-ART). The results were then compared to measurements at the Taunus Observatory on Mount Kleiner Feldberg, Germany, and to three other parameterizations applied to the dust outbreak. The aerosol number concentration and surface area from the COSMO-ART model simulation were taken as input to different parameterizations. Although the surface area from the model agreed well with aerosol measurements during the dust event at Kleiner Feldberg, the ice nuclei (IN) number concentration calculated from the new surface-area-based parameterization was about a factor of 13 less than IN measurements during the same event. Systematic differences of more than a factor of 10 in the IN number concentration were also found among the different parameterizations. Uncertainties in the modeled and measured parameters probably both contribute to this discrepancy and should be addressed in future studies.
    publisherAmerican Meteorological Society
    titleA Particle-Surface-Area-Based Parameterization of Immersion Freezing on Desert Dust Particles
    typeJournal Paper
    journal volume69
    journal issue10
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/JAS-D-11-0249.1
    journal fristpage3077
    journal lastpage3092
    treeJournal of the Atmospheric Sciences:;2012:;Volume( 069 ):;issue: 010
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian