Modeling the high-frequency barotropic response of the ocean to atmospheric disturbances: Sensitivity to forcing, topography, and friction

Naoki Hirose, Ichiro Fukumori, Victor Zlotnicki, Rui M. Ponte

    Research output: Contribution to journalArticle

    54 Citations (Scopus)

    Abstract

    This study examines high-frequency sea level variations forced by changes in surface atmospheric pressure and wind and their sensitivity to different forcing mechanisms, bottom topography resolution, and amount of friction in a barotropic ocean model. Optimal model performance, defined in terms of the explained variance in satellite altimeter and bottom pressure data, is found when using relatively strong friction, equivalent to a damping timescale of only a few days over the deep ocean, and topography with minimal smoothing. Spatial variations of the optimal friction parameter seem to reflect the roughness of bottom topography. The model demonstrates skill in simulating the wind-driven response as well as the nonequilibrium response to atmospheric pressure variations.

    Original languageEnglish
    Article number2000JC000763
    Pages (from-to)30987-30995
    Number of pages9
    JournalJournal of Geophysical Research: Oceans
    Volume106
    Issue numberC12
    Publication statusPublished - Dec 15 2001

    Fingerprint

    atmospheric disturbances
    friction
    Topography
    Frequency response
    topography
    oceans
    disturbances
    bottom topography
    atmospheric pressure
    Friction
    disturbance
    Atmospheric pressure
    sensitivity
    ocean
    modeling
    bottom pressure
    altimeters
    ocean models
    Aneroid altimeters
    Sea level

    All Science Journal Classification (ASJC) codes

    • Geophysics
    • Oceanography
    • Forestry
    • Aquatic Science
    • Ecology
    • Condensed Matter Physics
    • Water Science and Technology
    • Soil Science
    • Geochemistry and Petrology
    • Earth-Surface Processes
    • Physical and Theoretical Chemistry
    • Polymers and Plastics
    • Atmospheric Science
    • Earth and Planetary Sciences (miscellaneous)
    • Space and Planetary Science
    • Materials Chemistry
    • Palaeontology

    Cite this

    Modeling the high-frequency barotropic response of the ocean to atmospheric disturbances : Sensitivity to forcing, topography, and friction. / Hirose, Naoki; Fukumori, Ichiro; Zlotnicki, Victor; Ponte, Rui M.

    In: Journal of Geophysical Research: Oceans, Vol. 106, No. C12, 2000JC000763, 15.12.2001, p. 30987-30995.

    Research output: Contribution to journalArticle

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