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    WRF Hindcasts of Cold Front Passages over the ARM Eastern North Atlantic Site: A Sensitivity Study

    Source: Monthly Weather Review:;2018:;volume 146:;issue 008::page 2417
    Author:
    Lamraoui, Fayçal
    ,
    Booth, James F.
    ,
    Naud, Catherine M.
    DOI: 10.1175/MWR-D-17-0281.1
    Publisher: American Meteorological Society
    Abstract: AbstractThe present study explores the ability of the Weather Research and Forecasting (WRF) Model to accurately reproduce the passage of extratropical cold fronts at the DOE ARM eastern North Atlantic (ENA) observation site on the Azores. An analysis of three case studies is performed in which the impact of the WRF domain size, position of the model boundary relative to the ENA site, grid spacing, and spectral nudging conditions are explored. The results from these case studies indicate that model biases in the timing and duration of cold front passages change with the distance between the model domain boundary and the ENA site. For these three cases, if the western model boundary is farther than 1500 km from the site, the front becomes too meridional and fails to reach the site, making 1000 or 1500 km the optimal distances. In contrast, integrations with small distances (e.g., 500 km) between the site and domain boundaries have inadequate spatial spinup (i.e., the domain is too small for the model to properly stabilize). For all three cases, regardless of domain size, the model has biases in its upper-level circulation that impact the position and timing of the front. However, this issue is most serious for 4000-km2 domains and larger. For these domains, prolonged spectral nudging can correct cold front biases. As such, this analysis provides a framework to optimize the WRF Model configuration necessary for a realistic hindcast of a cold front passage at a fixed location centered in a domain as large as computationally possible.
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      WRF Hindcasts of Cold Front Passages over the ARM Eastern North Atlantic Site: A Sensitivity Study

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    contributor authorLamraoui, Fayçal
    contributor authorBooth, James F.
    contributor authorNaud, Catherine M.
    date accessioned2019-09-19T10:04:28Z
    date available2019-09-19T10:04:28Z
    date copyright6/7/2018 12:00:00 AM
    date issued2018
    identifier othermwr-d-17-0281.1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4261240
    description abstractAbstractThe present study explores the ability of the Weather Research and Forecasting (WRF) Model to accurately reproduce the passage of extratropical cold fronts at the DOE ARM eastern North Atlantic (ENA) observation site on the Azores. An analysis of three case studies is performed in which the impact of the WRF domain size, position of the model boundary relative to the ENA site, grid spacing, and spectral nudging conditions are explored. The results from these case studies indicate that model biases in the timing and duration of cold front passages change with the distance between the model domain boundary and the ENA site. For these three cases, if the western model boundary is farther than 1500 km from the site, the front becomes too meridional and fails to reach the site, making 1000 or 1500 km the optimal distances. In contrast, integrations with small distances (e.g., 500 km) between the site and domain boundaries have inadequate spatial spinup (i.e., the domain is too small for the model to properly stabilize). For all three cases, regardless of domain size, the model has biases in its upper-level circulation that impact the position and timing of the front. However, this issue is most serious for 4000-km2 domains and larger. For these domains, prolonged spectral nudging can correct cold front biases. As such, this analysis provides a framework to optimize the WRF Model configuration necessary for a realistic hindcast of a cold front passage at a fixed location centered in a domain as large as computationally possible.
    publisherAmerican Meteorological Society
    titleWRF Hindcasts of Cold Front Passages over the ARM Eastern North Atlantic Site: A Sensitivity Study
    typeJournal Paper
    journal volume146
    journal issue8
    journal titleMonthly Weather Review
    identifier doi10.1175/MWR-D-17-0281.1
    journal fristpage2417
    journal lastpage2432
    treeMonthly Weather Review:;2018:;volume 146:;issue 008
    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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