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Reduction of near-inertial energy through the dependence of wind stress on the ocean-surface velocity
- Source :
- Journal of Geophysical Research: Oceans. 118:2761-2773
- Publication Year :
- 2013
- Publisher :
- American Geophysical Union (AGU), 2013.
-
Abstract
- A realistic primitive-equation model of the Southern Ocean at eddying spatial resolution is used to examine the effect of ocean-surface-velocity dependence of the wind stress on the strength of near-inertial oscillations. Accounting for the ocean-surface-velocity dependence of the wind stress leads to a large reduction of wind-induced near-inertial energy of approximately 40 percent and of wind power input into the near-inertial frequency band of approximately 20 percent. A large part of this reduction can be explained by the leading-order modification to the wind stress if the ocean-surface velocity is included. The strength of the reduction is shown to be modulated by the inverse of the ocean-surface-mixed-layer depth. We conclude that the effect of surface-velocity dependence of the wind stress should be taken into account when estimating the wind-power input into the near-inertial frequency band and when estimating near-inertial energy levels in the ocean due to wind forcing.
- Subjects :
- Wind gradient
010504 meteorology & atmospheric sciences
Wind stress
Oceanography
01 natural sciences
Wind profile power law
Log wind profile
Geochemistry and Petrology
Wind shear
Earth and Planetary Sciences (miscellaneous)
14. Life underwater
Physics::Atmospheric and Oceanic Physics
0105 earth and related environmental sciences
Wind power
010505 oceanography
business.industry
Geophysics
Thermal wind
Mechanics
Roughness length
13. Climate action
Space and Planetary Science
Physics::Space Physics
Environmental science
business
Subjects
Details
- ISSN :
- 21699275
- Volume :
- 118
- Database :
- OpenAIRE
- Journal :
- Journal of Geophysical Research: Oceans
- Accession number :
- edsair.doi...........110160f5cf7ec522640efe84f0513b70
- Full Text :
- https://doi.org/10.1002/jgrc.20198