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        Numerical Study on the Effect of Air-Sea-Land Interaction on the Atmospheric Boundary Layer in Coastal Area

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        Author
        Yang, Zixuan
        Calderer, Antoni
        He, Sida
        Sotiropoulos, Fotis
        Doyle, James D.
        Flagg, David D.
        MacMahan, Jamie
        Wang, Qing
        Haus, Brian K.
        Graber, Hans C.
        Shen, Lian
        Date
        2018
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        Abstract
        We have performed large-eddy simulations (LES) to study the effect of complex land topography on the atmospheric boundary layer (ABL) in coastal areas. The areas under investigation are located at three beaches in Monterey Bay, CA, USA. The sharp-interface immersed boundary method is employed to resolve the land topography down to grid scale. We have considered real-time and what-if cases. In the real-time cases, measurement data and realistic land topographies are directly incorporated. In the what-if cases, the effects of different scenarios of wind speed, wind direction, and terrain pattern on the momentum flux at the beach are studied. The LES results are compared with simulations using the Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS) and field measurement data. We find that the land topography imposes a critical influence on the ABL in the coastal area. The momentum fluxes obtained from our LES agree with measurement data. Our results indicate the importance of capturing the effects of land topographies in simulations.
        Description
        The article of record as published may be found at http://www.mdpi.com/2073-4433/9/2/51
        Rights
        This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
        URI
        http://hdl.handle.net/10945/57869
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          Fetch-limited wind wave generation on the continental shelf 

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