The Fidelity of Ocean Models With Explicit Eddies (Chapter 17)

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Current practices within the oceanographic community have been reviewed with regard to the use of metrics to assess the realism of the upper-ocean circulation, ventilation processes diagnosed by time-evolving mixed layer depth and mode water formation, and eddy heat fluxes in large-scale fine resolution ocean model simulations. We have striven to understand the fidelity of these simulations in the context of their potential use in future fine-resolution coupled climate system studies. A variety of methodologies are used to assess the veracity of the numerical simulations. Sea surface height variability and the location of western boundary current paths from altimetry have ... continued below

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PDF-file: 25 pages; size: 5.2 Mbytes

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McClean, J.; Jayne, S.; Maltrud, M. & Ivanova, D. August 1, 2007.

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Description

Current practices within the oceanographic community have been reviewed with regard to the use of metrics to assess the realism of the upper-ocean circulation, ventilation processes diagnosed by time-evolving mixed layer depth and mode water formation, and eddy heat fluxes in large-scale fine resolution ocean model simulations. We have striven to understand the fidelity of these simulations in the context of their potential use in future fine-resolution coupled climate system studies. A variety of methodologies are used to assess the veracity of the numerical simulations. Sea surface height variability and the location of western boundary current paths from altimetry have been used routinely as basic indicators of fine-resolution model performance. Drifters and floats have also been used to provide pseudo-Eulerian measures of the mean and variability of surface and sub-surface flows, while statistical comparisons of observed and simulated means have been carried out using James tests. Probability density functions have been used to assess the Gaussian nature of the observed and simulated flows. Length and time scales have been calculated in both Eulerian and Lagrangian frameworks from altimetry and drifters, respectively. Concise measures of multiple model performance have been obtained from Taylor diagrams. The time-evolution of the mixed layer depth at monitoring stations has been compared with simulated time series. Finally, eddy heat fluxes are compared to climatological inferences.

Physical Description

PDF-file: 25 pages; size: 5.2 Mbytes

Source

  • Ocean Modeling in an Eddying Regime (Geophysical Monograph Series, Volume 177, 350pp, hardbound,ISBN 978-0-87590-442-9), The Fidelity of Ocean Models With Explicit Eddies (Chapter 17), American Geophysical Union, Washington DC, 2008, Ch.17, p1-15

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  • Report No.: UCRL-BOOK-233828
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 940898
  • Archival Resource Key: ark:/67531/metadc902859

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  • August 1, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Oct. 6, 2016, 1:31 p.m.

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McClean, J.; Jayne, S.; Maltrud, M. & Ivanova, D. The Fidelity of Ocean Models With Explicit Eddies (Chapter 17), book, August 1, 2007; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc902859/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.