rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: An
    title: Observational Study of the Impact of Gustiness on Air-Sea Momentum Fluxes and Waves Using a Novel Gustiness Metric
  name:
    name part: Lyu, Meng
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: Potter, Henry
    role:
      role term: thesis advisor.
  name:
    name part: Texas A&M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2023
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: As an integral component of the Earth system, the exchange of momentum at air-sea interface plays an important role in connecting the ocean and atmosphere. Thus, the parameterization for air-sea fluxes is essential for accurate global ocean circulation, wave growth, and climate and weather (long/short scale) models. It will be shown that gustiness (the fluctuation of wind speed and direction) enhances the momentum flux and waves. Hence, we will capture the characteristics of gustiness and quantify its impacts on momentum flux which is essential for the development of robust climate and weather models. Two unique, high quality observational data sets are used to explore the spatial and temporal variability of gustiness, to characterize its form, and quantify its impact on the air-sea boundary. The first data set was collected during the Impact of Typhoons on the Ocean in the Pacific (ITOP) experiment, which includes concurrent measurements of high-frequency wind vector, waves, and bulk met-ocean parameters. We define a new gustiness index which considers the influences of changing wind speed and direction both, and show that gusty runs have significant anisotropic characteristics, which lead to strengthened turbulence and alter the spectral properties of turbulence. The second data set was collected during the Coupled Air-Sea Processes and Electromagnetic ducting Research (CASPER) experiment. Here, an array of anemometers between 3 and 16 m is used to study the vertical variability of gustiness. We demonstrate that vertical component of wind speed has more energy under gusty conditions which increases with height. We also show that the dynamical mechanism of gustiness is related to an increase in energy. This energy originates in low frequencies and cascades to the wave scales and contributes to the momentum flux. Additional flux is shown to come from a higher height, which is consumed rapidly by sea friction. Finally, using both ITOP and CASPER data, the impact of g…
  note: by Meng Lyu.
  note: "Major Subject: Oceanography"
  note: Includes vita.
  note: Doctor of Philosophy Texas A&M University 2022 https://hdl.handle.net/1969.1/198151
  note: Includes bibliographical references.
  note: Text (Dissertation)
  subject:
    topic: Major Oceanography
  subject:
    topic: Air-sea Momentum Flux
  subject:
    topic: Gustiness
  identifier: https://hdl.handle.net/1969.1/198151
  record info:
    record content source: TXA
    record creation date: 240828
    record change date: 20240829173519.6
    record identifier: in00005468684
    language of cataloging:
      language term: eng