Academic literature on the topic 'McWilliams parameterization'

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Journal articles on the topic "McWilliams parameterization"

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Gent, Peter R. "The Gent–McWilliams parameterization: 20/20 hindsight." Ocean Modelling 39, no. 1-2 (2011): 2–9. http://dx.doi.org/10.1016/j.ocemod.2010.08.002.

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Grooms, Ian. "A Gaussian-product stochastic Gent–McWilliams parameterization." Ocean Modelling 106 (October 2016): 27–43. http://dx.doi.org/10.1016/j.ocemod.2016.09.005.

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Smith, Richard D., and Peter R. Gent. "Anisotropic Gent–McWilliams Parameterization for Ocean Models." Journal of Physical Oceanography 34, no. 11 (2004): 2541–64. http://dx.doi.org/10.1175/jpo2613.1.

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Abstract An anisotropic generalization of the Gent–McWilliams (GM) parameterization is presented for eddy-induced tracer transport and diffusion in ocean models, and it is implemented in an ocean general circulation model using a functional formalism to derive the spatial discretization. This complements the anisotropic viscosity parameterization recently developed by Smith and McWilliams. The anisotropic GM operator is potentially useful in both coarse- and high-resolution ocean models, and in this study the focus is on its application in high-resolution eddying solutions, for which it provid
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Cessi, Paola. "An Energy-Constrained Parameterization of Eddy Buoyancy Flux." Journal of Physical Oceanography 38, no. 8 (2008): 1807–19. http://dx.doi.org/10.1175/2007jpo3812.1.

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Abstract A parameterization for eddy buoyancy fluxes for use in coarse-grid models is developed and tested against eddy-resolving simulations. The development is based on the assumption that the eddies are adiabatic (except near the surface) and the observation that the flux of buoyancy is affected by barotropic, depth-independent eddies. Like the previous parameterizations of Gent and McWilliams (GM) and Visbeck et al. (VMHS), the horizontal flux of a tracer is proportional to the local large-scale horizontal gradient of the tracer through a transfer coefficient assumed to be given by the pro
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Ivchenko, V. O., S. Danilov, and J. Schröter. "Comparison of the Effect of Parameterized Eddy Fluxes of Thickness and Potential Vorticity." Journal of Physical Oceanography 44, no. 9 (2014): 2470–84. http://dx.doi.org/10.1175/jpo-d-13-0267.1.

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Abstract Parameterization of mesoscale eddies is an important problem of modern ocean dynamics and modeling. The most widely used scheme is the so-called Gent–McWilliams parameterization, which describes the eddy-induced transport of tracers, including temperature, density, and isopycnal thickness (TH). An alternative scheme, proposed by Green and Welander, deals with parameterizing eddy fluxes of potential vorticity (PV). Many recent studies propose using it, for it includes the effect of eddy Reynolds stresses that may influence mean flows. These two schemes are compared in the simplest conf
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Marshall, David P., and Alberto C. Naveira Garabato. "A Conjecture on the Role of Bottom-Enhanced Diapycnal Mixing in the Parameterization of Geostrophic Eddies." Journal of Physical Oceanography 38, no. 7 (2008): 1607–13. http://dx.doi.org/10.1175/2007jpo3619.1.

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Abstract The parameterization of geostrophic eddies represents a large sink of energy in most ocean models, yet the ultimate fate of this eddy energy in the ocean remains unclear. The authors conjecture that a significant fraction of the eddy energy may be transferred to internal lee waves and oscillations over rough bottom topography, leading to bottom-enhanced diapycnal mixing. A range of circumstantial evidence in support of this conjecture is presented and discussed. The authors further propose a modification to the Gent and McWilliams eddy parameterization to account for the bottom-enhanc
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Gent, Peter R., and Gokhan Danabasoglu. "Response to Increasing Southern Hemisphere Winds in CCSM4." Journal of Climate 24, no. 19 (2011): 4992–98. http://dx.doi.org/10.1175/jcli-d-10-05011.1.

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Results from two perturbation experiments using the Community Climate System Model version 4 where the Southern Hemisphere zonal wind stress is increased are described. It is shown that the ocean response is in accord with experiments using much-higher-resolution ocean models that do not use an eddy parameterization. The key to obtaining an appropriate response in the coarse-resolution climate model is to specify a variable coefficient in the Gent and McWilliams eddy parameterization, rather than a constant value. This result contrasts with several recent papers that have suggested that coarse
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Jansen, Malte F. "A note on: “A Gaussian-product stochastic Gent–McWilliams parameterization”." Ocean Modelling 110 (February 2017): 49–51. http://dx.doi.org/10.1016/j.ocemod.2016.12.005.

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Grooms, Ian, and William Kleiber. "Diagnosing, modeling, and testing a multiplicative stochastic Gent-McWilliams parameterization." Ocean Modelling 133 (January 2019): 1–10. http://dx.doi.org/10.1016/j.ocemod.2018.10.009.

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Fan, Yalin, and Stephen M. Griffies. "Impacts of Parameterized Langmuir Turbulence and Nonbreaking Wave Mixing in Global Climate Simulations." Journal of Climate 27, no. 12 (2014): 4752–75. http://dx.doi.org/10.1175/jcli-d-13-00583.1.

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Abstract The impacts of parameterized upper-ocean wave mixing on global climate simulations are assessed through modification to Large et al.’s K-profile ocean boundary layer parameterization (KPP) in a coupled atmosphere–ocean–wave global climate model. The authors consider three parameterizations and focus on impacts to high-latitude ocean mixed layer depths and related ocean diagnostics. The McWilliams and Sullivan parameterization (MS2000) adds a Langmuir turbulence enhancement to the nonlocal component of KPP. It is found that the Langmuir turbulence–induced mixing provided by this parame
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Dissertations / Theses on the topic "McWilliams parameterization"

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Adim, Mahieddine. "Modèles continûment stratifiés et systèmes multi-couches pour les écoulements géophysiques." Electronic Thesis or Diss., Université de Rennes (2023-....), 2024. http://www.theses.fr/2024URENS026.

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Dans cette thèse, nous établissons rigoureusement des ponts entre les écoulements continument stratifiés et les écoulements multi-couches. Dans une première partie, nous considérons le système de Saint-Venant multi-couches avec un terme supplémentaire diffusif qui a un effet régularisant, dont la motivation provient des travaux des océanographes Gent & McWilliams sur le mélange isopycnal et la diffusivité des tourbillons, et qui pourrait être interprété comme un terme de turbulence. En exploitant la structure de ce système, nous obtenons un dictionnaire qui nous permet d'interpréter ce sys
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