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    Mesoscale Model Simulations of Three Heavy Precipitation Events in the Western Mediterranean Region

    Source: Monthly Weather Review:;1998:;volume( 126 ):;issue: 007::page 1859
    Author:
    Romero, Romualdo
    ,
    Ramis, Clemente
    ,
    Alonso, Sergio
    ,
    Doswell, Charles A.
    ,
    Stensrud, David J.
    DOI: 10.1175/1520-0493(1998)126<1859:MMSOTH>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A mesoscale numerical model with parameterized moist convection is applied to three cases involving heavy rainfall in the western Mediterranean region. Forecast precipitation fields, although not perfect when compared to the observations of rainfall, appear to have sufficient information to be considered useful forecasting guidance. The results illustrate that a good simulation for this type of event in a region with complex topography is strongly dependent on a good initialization and prediction of the low-level flow and water vapor distribution. For two of the cases that have a marked synoptic-scale contribution, the simulations give reasonably accurate predictions of the precipitation distribution, although the amounts are generally underestimated. The third case exhibits relatively subtle synoptic-scale forcing and is dominated by isolated convective storms (mostly over the sea) that also produced severe thunderstorms (including tornadoes), and the prediction of precipitation is not as promising. Overall, the results are encouraging in terms of potential application of mesoscale models operationally in the western Mediterranean region. Additional experiments beyond the ?control? simulations have been performed to isolate the influence of orography and water vapor flux from the Mediterranean Sea on the model simulations. This factor separation indicates that both effects can be important contributors to a successful forecast. Suggestions are offered for future efforts in pursuing the application of mesoscale models to this forecast problem.
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      Mesoscale Model Simulations of Three Heavy Precipitation Events in the Western Mediterranean Region

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4204118
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    • Monthly Weather Review

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    contributor authorRomero, Romualdo
    contributor authorRamis, Clemente
    contributor authorAlonso, Sergio
    contributor authorDoswell, Charles A.
    contributor authorStensrud, David J.
    date accessioned2017-06-09T16:12:01Z
    date available2017-06-09T16:12:01Z
    date copyright1998/07/01
    date issued1998
    identifier issn0027-0644
    identifier otherams-63147.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4204118
    description abstractA mesoscale numerical model with parameterized moist convection is applied to three cases involving heavy rainfall in the western Mediterranean region. Forecast precipitation fields, although not perfect when compared to the observations of rainfall, appear to have sufficient information to be considered useful forecasting guidance. The results illustrate that a good simulation for this type of event in a region with complex topography is strongly dependent on a good initialization and prediction of the low-level flow and water vapor distribution. For two of the cases that have a marked synoptic-scale contribution, the simulations give reasonably accurate predictions of the precipitation distribution, although the amounts are generally underestimated. The third case exhibits relatively subtle synoptic-scale forcing and is dominated by isolated convective storms (mostly over the sea) that also produced severe thunderstorms (including tornadoes), and the prediction of precipitation is not as promising. Overall, the results are encouraging in terms of potential application of mesoscale models operationally in the western Mediterranean region. Additional experiments beyond the ?control? simulations have been performed to isolate the influence of orography and water vapor flux from the Mediterranean Sea on the model simulations. This factor separation indicates that both effects can be important contributors to a successful forecast. Suggestions are offered for future efforts in pursuing the application of mesoscale models to this forecast problem.
    publisherAmerican Meteorological Society
    titleMesoscale Model Simulations of Three Heavy Precipitation Events in the Western Mediterranean Region
    typeJournal Paper
    journal volume126
    journal issue7
    journal titleMonthly Weather Review
    identifier doi10.1175/1520-0493(1998)126<1859:MMSOTH>2.0.CO;2
    journal fristpage1859
    journal lastpage1881
    treeMonthly Weather Review:;1998:;volume( 126 ):;issue: 007
    contenttypeFulltext
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