PUBLIC INTERFACE ~ PUBLIC ROUTINES ~ NAMELIST

Module ocean_nphysics_util_new_mod

Contact:  Tim Leslie
Reviewers:  Stephen M. Griffies
Change History: WebCVS Log

OVERVIEW

Utilities for neutral physics modules.

Utilities for neutral physics modules.

OTHER MODULES USED

       constants_mod
    diag_manager_mod
             fms_mod
             mpp_mod
     mpp_domains_mod
   ocean_domains_mod
ocean_parameters_mod
     ocean_types_mod

PUBLIC INTERFACE

stencil_centre_to_vert:
stencil_centre_to_vert:
stencil_centre_to_horiz:
vert_smooth:
horz_smooth:
compute_rossby_radius:
check_init:

PUBLIC ROUTINES

  1. stencil_centre_to_vert

    DESCRIPTION
    Initialise the grid indices and constants.


  2. stencil_centre_to_vert

    DESCRIPTION
    Take an array defined over the 4 quadrants centred on a tracer cell and shift them vertically to the four quadrants spanning the bottom cell face. The top and bottom half cells are set to zero. _____________ _____________ | : | | : | | 0,0 : 1,0 | | : | | : ! | : | |-----T-----| ==> |-----T-----| | : ! | : | | 0,1 : 1,1 ! | 0,0 : 1,0 | |_____:_____| |_____:_____| | : | | 0,1 : 1,1 | | : | |-----o-----| | : | | : | |_____:_____|


  3. stencil_centre_to_horiz

    DESCRIPTION
    Take an array defined over the 4 quadrants centred on a tracer cell and shift them horizontally to the four quadrants spanning the right hand cell face. _____________ _________________________ | : | | : | : | | 0,0 : 1,0 | | : 0,0 | 1,0 : | | : ! | : | : | |-----T-----| ==> |-----T-----|-----o-----| | : ! | : | : | | 0,1 : 1,1 ! | : 0,1 | 1,1 : | |_____:_____| |_____:_____|_____:_____|


  4. vert_smooth

    DESCRIPTION
    Apply a vertical smoothing using a weighted 3 point stencil. 1 Stencil weights : 2 1 Smoothing is applied to all points in the column which admit the full stencil (so vertical boundaries are not modified). The smoothing is applied multiple times, controlled by the namelist parameter num_121_passes.


  5. horz_smooth

    DESCRIPTION
    Apply a horizontal smoothing using a weighted five point stencil. 1 Stencil weights : 1 4 1 1 Only active cells, as defined by the tmask, are used in the calculation. Operates over the COMP domain.


  6. compute_rossby_radius

    DESCRIPTION
    Subroutine computes the first baroclinic Rossby radius of deformation. Employ WKB approach described by Chelton et al. In particular, use formulae (2.2), (2.3a) and (2.3b) from their paper.


  7. check_init

    DESCRIPTION
    Helper function to ensure the module is initialised when calling the module's functions.


NAMELIST

&ocean_nphysics_util_new_nml

num_121_passes
For number of 1-2-1 passes through to smooth drhodz or eady_rate in vertical. Default num_121_passes=1.
[integer]

REFERENCES

  1. D.B. Chelton, R.A. deSzoeke, M.G. Schlax, K.E. Naggar, N. Siwertz Geographical Variability of the First Baroclinic Rossby Radius of Deformation Journal of Physical Oceanography (1998) vol 28 pages 433-460
  2. K. Eden and R. Greatbatch, 2008: Towards a mesoscale eddy closure, Ocean Modelling, vol. 20, pages 223-239
  3. S.M. Griffies "Elements of MOM (2012) (EoM)"
  4. S.M. Griffies Fundamentals of Ocean Climate Models (2004) Princeton University Press

NOTES


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