/[MITgcm]/manual/s_examples/global_oce_latlon/climatalogical_ogcm.tex
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revision 1.9 by adcroft, Thu May 16 15:54:37 2002 UTC revision 1.14 by molod, Tue Jun 27 19:08:22 2006 UTC
# Line 1  Line 1 
1  % $Header$  % $Header$
2  % $Name$  % $Name$
3    
4  \section{Global Ocean Simulation at 4$^\circ$ Resolution}  \section[Global Ocean MITgcm Exmaple]{Global Ocean Simulation at $4^\circ$ Resolution}
5  \label{www:tutorials}  \label{www:tutorials}
6  \label{sect:eg-global}  \label{sect:eg-global}
7    \begin{rawhtml}
8    <!-- CMIREDIR:eg-global: -->
9    \end{rawhtml}
10    
11  \bodytext{bgcolor="#FFFFFFFF"}  \bodytext{bgcolor="#FFFFFFFF"}
12    
# Line 22  This example experiment demonstrates usi Line 25  This example experiment demonstrates usi
25  the planetary ocean circulation. The simulation is configured  the planetary ocean circulation. The simulation is configured
26  with realistic geography and bathymetry on a  with realistic geography and bathymetry on a
27  $4^{\circ} \times 4^{\circ}$ spherical polar grid.  $4^{\circ} \times 4^{\circ}$ spherical polar grid.
28    The files for this experiment are in the verification directory
29    under tutorial\_global\_oce\_latlon.
30  Twenty levels are used in the vertical, ranging in thickness  Twenty levels are used in the vertical, ranging in thickness
31  from $50\,{\rm m}$ at the surface to $815\,{\rm m}$ at depth,  from $50\,{\rm m}$ at the surface to $815\,{\rm m}$ at depth,
32  giving a maximum model depth of $6\,{\rm km}$.  giving a maximum model depth of $6\,{\rm km}$.
# Line 212  The Laplacian dissipation coefficient, $ Line 217  The Laplacian dissipation coefficient, $
217  This value is chosen to yield a Munk layer width \cite{adcroft:95},  This value is chosen to yield a Munk layer width \cite{adcroft:95},
218  \begin{eqnarray}  \begin{eqnarray}
219  \label{EQ:eg-global-munk_layer}  \label{EQ:eg-global-munk_layer}
220  M_{w} = \pi ( \frac { A_{h} }{ \beta } )^{\frac{1}{3}}  && M_{w} = \pi ( \frac { A_{h} }{ \beta } )^{\frac{1}{3}}
221  \end{eqnarray}  \end{eqnarray}
222    
223  \noindent  of $\approx 600$km. This is greater than the model  \noindent  of $\approx 600$km. This is greater than the model
# Line 226  $\delta t_{v}=40~{\rm minutes}$ for mome Line 231  $\delta t_{v}=40~{\rm minutes}$ for mome
231  parameter to the horizontal Laplacian friction \cite{adcroft:95}  parameter to the horizontal Laplacian friction \cite{adcroft:95}
232  \begin{eqnarray}  \begin{eqnarray}
233  \label{EQ:eg-global-laplacian_stability}  \label{EQ:eg-global-laplacian_stability}
234  S_{l} = 4 \frac{A_{h} \delta t_{v}}{{\Delta x}^2}  && S_{l} = 4 \frac{A_{h} \delta t_{v}}{{\Delta x}^2}
235  \end{eqnarray}  \end{eqnarray}
236    
237  \noindent evaluates to 0.16 at a latitude of $\phi=80^{\circ}$, which is below the  \noindent evaluates to 0.16 at a latitude of $\phi=80^{\circ}$, which is below the
# Line 355  are Line 360  are
360  \begin{verbatim} tRef= 16.0 , 15.2 , 14.5 , 13.9 , 13.3 ,  \end{verbatim}  \begin{verbatim} tRef= 16.0 , 15.2 , 14.5 , 13.9 , 13.3 ,  \end{verbatim}
361  $\cdots$ \\  $\cdots$ \\
362  set reference values for potential  set reference values for potential
363  temperature and salinity at each model level in units of $^{\circ}$C and  temperature and salinity at each model level in units of $^{\circ}\mathrm{C}$ and
364  ${\rm ppt}$. The entries are ordered from surface to depth.  ${\rm ppt}$. The entries are ordered from surface to depth.
365  Density is calculated from anomalies at each level evaluated  Density is calculated from anomalies at each level evaluated
366  with respect to the reference values set here.\\  with respect to the reference values set here.\\
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