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    The Red Sea: An Arena for Wind-Wave Modeling in Enclosed Seas

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    Name:
    SabiqueLangodanThesis.pdf
    Size:
    28.16Mb
    Format:
    PDF
    Description:
    Sabique Final Dissertation
    Download
    Type
    Dissertation
    Authors
    Langodan, Sabique cc
    Advisors
    Hoteit, Ibrahim cc
    Committee members
    Jones, Burton cc
    Knio, Omar cc
    Cavaleri, Luigi
    Program
    Earth Science and Engineering
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2016-12
    Embargo End Date
    2017-12-11
    Permanent link to this record
    http://hdl.handle.net/10754/622003
    
    Metadata
    Show full item record
    Access Restrictions
    At the time of archiving, the student author of this dissertation opted to temporarily restrict access to it. The full text of this dissertation became available to the public after the expiration of the embargo on 2017-12-11.
    Abstract
    Wind and waves play a major role in important ocean dynamical processes, such as the exchange of heat, momentum and gases between atmosphere and ocean, that greatly contributes to the earth climate and marine lives. Knowledge on wind and wave weather and climate is crucial for a wide range of applications, including oceanographic studies, maritime activities and ocean engineering. Despite being one of the important world shipping routes, the wind-wave characteristics in the Red Sea are yet to be fully explored. Because of the scarcity of waves data in the Red Sea, numerical models become crucial and provide very powerful tools to extrapolate wind and wave data in space, and backward and forward in time. Unlike open oceans, enclosed basins wave have different characteristics, mainly because of their local generation processes. The complex orography on both sides of the Red Sea makes the local wind, and consequently wave, modeling very challenging. This thesis considers the modeling of wind-wave characteristics in the Red Sea, including their climate variability and trends using state-of-the-art numerical models and all available observations. Different approaches are investigated to model and understand the general and unusual wind and wave conditions in the basin using standard global meteorological products and customised regional wind and wave models. After studying and identifying the main characteristics of the wind-wave variability in the Red Sea, we demonstrate the importance of generating accurate atmospheric forcing through data assimilation for reliable wave simulations. In particular, we show that the state-of-the-art physical formulation of wave models is not suitable to model the unique situation of the two opposing wind-waves systems in the Red Sea Convergence Zone, and propose and successfully test a modification to the input and white-capping source functions to address this problem. We further investigate the climate variability and trends of wind and waves in the Red Sea using high-resolution wind and wave reanalyses that have been generated as part of this thesis. An innovative spectral partition technique is first applied to distinguish the dominant wave systems. Our analysis demonstrates that winds, and consequently waves, exhibit a decreasing trend in the Red Sea. This is mainly attributed to a remarkable weakening of the winds protruding from the Mediterranean Sea. We also use these highresolution reanalyses to assess the potential for harvesting wind and wave energy from the Red Sea.
    Citation
    Langodan, S. (2016). The Red Sea: An Arena for Wind-Wave Modeling in Enclosed Seas. KAUST Research Repository. https://doi.org/10.25781/KAUST-96411
    DOI
    10.25781/KAUST-96411
    ae974a485f413a2113503eed53cd6c53
    10.25781/KAUST-96411
    Scopus Count
    Collections
    Dissertations; Dissertations; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program

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