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    High-Resolution GEM-LAM Application in Marine Fog Prediction: Evaluation and Diagnosis

    Source: Weather and Forecasting:;2009:;volume( 025 ):;issue: 002::page 727
    Author:
    Yang, Duo
    ,
    Ritchie, Harold
    ,
    Desjardins, Serge
    ,
    Pearson, Garry
    ,
    MacAfee, Allan
    ,
    Gultepe, Ismail
    DOI: 10.1175/2009WAF2222337.1
    Publisher: American Meteorological Society
    Abstract: A three-level nested rendering of a high-resolution limited-area model version of the Global Environment Multiscale configuration (GEM-LAM), running quasi-operationally at the Canadian Meteorological Centre, is evaluated for its capabilities in marine fog prediction. The model shows a general underestimation of the cloud water content at lower levels that is utilized as one of the proxies for fog and/or low stratus. A warm and dry tendency also appears at the lowest layer (a few hundreds of meters above the surface) of the vertical profiles and at screen level. The condensation scheme directly generates/dissipates the cloud water content (or fog) while boundary layer processes [such as moist turbulent kinetic energy (MoisTKE)] vertically redistribute it. However, the results presented here emphasize the significance of the accurate initial and vertical velocity fields, as well as the interactions between the condensation scheme and the radiation scheme that interacts fully with clouds. These conclusions suggest that a delicate balance among the different physical processes and dynamics is needed for a successful fog forecast.
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      High-Resolution GEM-LAM Application in Marine Fog Prediction: Evaluation and Diagnosis

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4211504
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    • Weather and Forecasting

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    contributor authorYang, Duo
    contributor authorRitchie, Harold
    contributor authorDesjardins, Serge
    contributor authorPearson, Garry
    contributor authorMacAfee, Allan
    contributor authorGultepe, Ismail
    date accessioned2017-06-09T16:32:57Z
    date available2017-06-09T16:32:57Z
    date copyright2010/04/01
    date issued2009
    identifier issn0882-8156
    identifier otherams-69796.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4211504
    description abstractA three-level nested rendering of a high-resolution limited-area model version of the Global Environment Multiscale configuration (GEM-LAM), running quasi-operationally at the Canadian Meteorological Centre, is evaluated for its capabilities in marine fog prediction. The model shows a general underestimation of the cloud water content at lower levels that is utilized as one of the proxies for fog and/or low stratus. A warm and dry tendency also appears at the lowest layer (a few hundreds of meters above the surface) of the vertical profiles and at screen level. The condensation scheme directly generates/dissipates the cloud water content (or fog) while boundary layer processes [such as moist turbulent kinetic energy (MoisTKE)] vertically redistribute it. However, the results presented here emphasize the significance of the accurate initial and vertical velocity fields, as well as the interactions between the condensation scheme and the radiation scheme that interacts fully with clouds. These conclusions suggest that a delicate balance among the different physical processes and dynamics is needed for a successful fog forecast.
    publisherAmerican Meteorological Society
    titleHigh-Resolution GEM-LAM Application in Marine Fog Prediction: Evaluation and Diagnosis
    typeJournal Paper
    journal volume25
    journal issue2
    journal titleWeather and Forecasting
    identifier doi10.1175/2009WAF2222337.1
    journal fristpage727
    journal lastpage748
    treeWeather and Forecasting:;2009:;volume( 025 ):;issue: 002
    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
    yabeshDSpacePersian