Definition of the control model and perturbed models

description of the control model

  • model number: 0
    • A model with 27 levels in the vertical (hybrid),
    • Fixed parameter for Gravity Wave Drag (8.0e-6),
    • Force-Restore type of land surface processes,
    • Sundqvist type of condensation,
    • Kuo-type of convection (Kuo 1974),
    • shallow convection simulated,
    • semi-lagrangian scheme using 3 time levels,
    • These are the same schemes as those used by CMC's deterministic global model.

    description of the 8 perturbed SEF models

  • model number: 1
    • A model with 27 levels in the vertical (hybrid),
    • Fixed parameter for Gravity Wave Drag (1.2e-5),
    • ISBA type of land surface processes (Noilhan & Planton),
    • Sundqvist type of condensation,
    • Kuo-type of convection (Kuo 1974),
    • shallow convection simulated,
    • semi-lagrangian scheme using 3 time levels.
  • model number: 2
    • A model with 27 levels in the vertical (hybrid),
    • Fixed parameter for Gravity Wave Drag (1.2e-5),
    • Force-Restore type of land surface processes,
    • Sundqvist type of condensation,
    • Relaxed Arakawa-Schubert (Moorthi & Suarez),
    • shallow convection explicit,
    • semi-lagrangian scheme using 3 time levels.
  • model number: 3
    • A model with 27 levels in the vertical (hybrid),
    • Fixed parameter for Gravity Wave Drag (4.0e-6),
    • Force-Restore type of land surface processes,
    • Sundqvist type of condensation,
    • Kuo-type of convection (Kuo 1974),
    • shallow convection simulated,
    • semi-lagrangian scheme using 3 time levels.
  • model number: 4
    • A model with 27 levels in the vertical (hybrid),
    • Fixed parameter for Gravity Wave Drag (4.0e-6),
    • ISBA type of land surface processes (Noilhan & Planton),
    • Sundqvist type of condensation,
    • Relaxed Arakawa-Schubert (Moorthi & Suarez),
    • shallow convection explicit,
    • semi-lagrangian scheme using 3 time levels.
  • model number: 5
    • A model with 27 levels in the vertical (hybrid),
    • Fixed parameter for Gravity Wave Drag (1.2e-5),
    • Force-Restore type of land surface processes,
    • Sundqvist type of condensation,
    • Relaxed Arakawa-Schubert (Moorthi & Suarez),
    • shallow convection explicit,
    • semi-lagrangian scheme using 2 time levels.
  • model number: 6
    • A model with 27 levels in the vertical (hybrid),
    • Fixed parameter for Gravity Wave Drag (1.2e-5),
    • ISBA type of land surface processes (Noilhan & Planton),
    • Sundqvist type of condensation,
    • Kuo-type of convection (Kuo 1974),
    • shallow convection simulated,
    • semi-lagrangian scheme using 2 time levels.
  • model number: 7
    • A model with 27 levels in the vertical (hybrid),
    • Fixed parameter for Gravity Wave Drag (4.0e-6),
    • ISBA type of land surface processes (Noilhan & Planton),
    • Sundqvist type of condensation,
    • Relaxed Arakawa-Schubert (Moorthi & Suarez),
    • shallow convection explicit,
    • semi-lagrangian scheme using 2 time levels.
  • model number: 8
    • A model with 27 levels in the vertical (hybrid),
    • Fixed parameter for Gravity Wave Drag (4.0e-6),
    • Force-Restore type of land surface processes,
    • Sundqvist type of condensation,
    • Kuo-type of convection (Kuo 1974),
    • shallow convection explicit,
    • semi-lagrangian scheme using 2 time levels.

    description of the 8 perturbed GEM models

  • model number: 9
    • A model with 28 levels in the vertical,
    • Fixed parameter for Gravity Wave Drag (8.0e-6),
    • Force-Restore type of land surface processes,
    • Sundqvist type of condensation,
    • Kuosym type of convection (Wagneur 1991),
    • shallow convection explicit,
    • semi-lagrangian scheme using 2 time levels.
  • model number: 10
    • A model with 28 levels in the vertical,
    • Fixed parameter for Gravity Wave Drag (8.0e-6),
    • ISBA type of land surface processes (Noilhan & Planton),
    • Sundqvist type of condensation,
    • Relaxed Arakawa-Schubert (Moorthi & Suarez),
    • shallow convection simulated,
    • semi-lagrangian scheme using 2 time levels.
  • model number: 11
    • A model with 28 levels in the vertical,
    • Fixed parameter for Gravity Wave Drag (8.0e-6),
    • Force-Restore type of land surface processes,
    • Sundqvist type of condensation,
    • Relaxed Arakawa-Schubert (Moorthi & Suarez),
    • shallow convection simulated,
    • semi-lagrangian scheme using 2 time levels.
  • model number: 12
    • A model with 28 levels in the vertical,
    • Fixed parameter for Gravity Wave Drag (8.0e-6),
    • ISBA type of land surface processes (Noilhan & Planton),
    • Sundqvist type of condensation,
    • Kuosym type of convection (Wagneur 1991),
    • shallow convection explicit,
    • semi-lagrangian scheme using 2 time levels.
  • model number: 13
    • A model with 28 levels in the vertical,
    • Fixed parameter for Gravity Wave Drag (8.0e-6),
    • Force-Restore type of land surface processes,
    • Sundqvist type of condensation,
    • Kuosym type of convection (Wagneur 1991),
    • shallow convection explicit,
    • semi-lagrangian scheme using 2 time levels.
  • model number: 14
    • A model with 28 levels in the vertical,
    • Fixed parameter for Gravity Wave Drag (8.0e-6),
    • Sundqvist type of condensation,
    • ISBA type of land surface processes (Noilhan & Planton),
    • Kuosym type of convection (Wagneur 1991),
    • shallow convection simulated,
    • semi-lagrangian scheme using 2 time levels.
  • model number: 15
    • A model with 28 levels in the vertical,
    • Fixed parameter for Gravity Wave Drag (8.0e-6),
    • ISBA type of land surface processes (Noilhan & Planton),
    • Sundqvist type of condensation,
    • Kuosym type of convection (Wagneur 1991),
    • shallow convection explicit,
    • semi-lagrangian scheme using 2 time levels.
  • model number: 16
    • A model with 28 levels in the vertical,
    • Fixed parameter for Gravity Wave Drag (8.0e-6),
    • Force-Restore type of land surface processes,
    • Sundqvist type of condensation,
    • Kuo Convection and Sundqvist condensation,
    • shallow convection explicit,
    • semi-lagrangian scheme using 2 time levels.
    Please send an email to production-info@cmc.ec.gc.ca if you require more information

    Created: 2002-12-31
    Modified: 2004-07-13
    Reviewed: 2002-12-31
    URL of this page: http://weather.ec.gc.ca/ensemble/verifs/model_e.html

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