/[MITgcm]/manual/s_examples/global_oce_latlon/climatalogical_ogcm.tex
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revision 1.8 by cnh, Thu Feb 28 19:32:19 2002 UTC revision 1.10 by adcroft, Wed Nov 20 14:09:32 2002 UTC
# Line 2  Line 2 
2  % $Name$  % $Name$
3    
4  \section{Global Ocean Simulation at 4$^\circ$ Resolution}  \section{Global Ocean Simulation at 4$^\circ$ Resolution}
5    \label{www:tutorials}
6  \label{sect:eg-global}  \label{sect:eg-global}
7    
8  \bodytext{bgcolor="#FFFFFFFF"}  \bodytext{bgcolor="#FFFFFFFF"}
# Line 29  can be integrated forward for thousands Line 30  can be integrated forward for thousands
30  processor desktop computer.  processor desktop computer.
31  \\  \\
32  \subsection{Overview}  \subsection{Overview}
33    \label{www:tutorials}
34    
35  The model is forced with climatological wind stress data and surface  The model is forced with climatological wind stress data and surface
36  flux data from DaSilva \cite{DaSilva94}. Climatological data  flux data from DaSilva \cite{DaSilva94}. Climatological data
# Line 86  simulation are described in the experime Line 88  simulation are described in the experime
88    
89    
90  \subsection{Discrete Numerical Configuration}  \subsection{Discrete Numerical Configuration}
91    \label{www:tutorials}
92    
93    
94   The model is configured in hydrostatic form.  The domain is discretised with   The model is configured in hydrostatic form.  The domain is discretised with
# Line 203  elevation $\eta$ and the hydrostatic pre Line 206  elevation $\eta$ and the hydrostatic pre
206  \\  \\
207    
208  \subsubsection{Numerical Stability Criteria}  \subsubsection{Numerical Stability Criteria}
209    \label{www:tutorials}
210    
211  The Laplacian dissipation coefficient, $A_{h}$, is set to $5 \times 10^5 m s^{-1}$.  The Laplacian dissipation coefficient, $A_{h}$, is set to $5 \times 10^5 m s^{-1}$.
212  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},
213  \begin{eqnarray}  \begin{eqnarray}
214  \label{EQ:eg-global-munk_layer}  \label{EQ:eg-global-munk_layer}
215  M_{w} = \pi ( \frac { A_{h} }{ \beta } )^{\frac{1}{3}}  && M_{w} = \pi ( \frac { A_{h} }{ \beta } )^{\frac{1}{3}}
216  \end{eqnarray}  \end{eqnarray}
217    
218  \noindent  of $\approx 600$km. This is greater than the model  \noindent  of $\approx 600$km. This is greater than the model
# Line 222  $\delta t_{v}=40~{\rm minutes}$ for mome Line 226  $\delta t_{v}=40~{\rm minutes}$ for mome
226  parameter to the horizontal Laplacian friction \cite{adcroft:95}  parameter to the horizontal Laplacian friction \cite{adcroft:95}
227  \begin{eqnarray}  \begin{eqnarray}
228  \label{EQ:eg-global-laplacian_stability}  \label{EQ:eg-global-laplacian_stability}
229  S_{l} = 4 \frac{A_{h} \delta t_{v}}{{\Delta x}^2}  && S_{l} = 4 \frac{A_{h} \delta t_{v}}{{\Delta x}^2}
230  \end{eqnarray}  \end{eqnarray}
231    
232  \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 299  S_{c} = \frac{c_{g} \delta t_{v}}{ \Delt Line 303  S_{c} = \frac{c_{g} \delta t_{v}}{ \Delt
303  stability limit of 0.5.  stability limit of 0.5.
304        
305  \subsection{Experiment Configuration}  \subsection{Experiment Configuration}
306    \label{www:tutorials}
307  \label{SEC:eg-global-clim_ocn_examp_exp_config}  \label{SEC:eg-global-clim_ocn_examp_exp_config}
308    
309  The model configuration for this experiment resides under the  The model configuration for this experiment resides under the
# Line 325  experiments. Below we describe the custo Line 330  experiments. Below we describe the custo
330  to these files associated with this experiment.  to these files associated with this experiment.
331    
332  \subsubsection{Driving Datasets}  \subsubsection{Driving Datasets}
333    \label{www:tutorials}
334    
335  Figures (\ref{FIG:sim_config_tclim}-\ref{FIG:sim_config_empmr}) show the  Figures (\ref{FIG:sim_config_tclim}-\ref{FIG:sim_config_empmr}) show the
336  relaxation temperature ($\theta^{\ast}$) and salinity ($S^{\ast}$) fields,  relaxation temperature ($\theta^{\ast}$) and salinity ($S^{\ast}$) fields,
# Line 337  domain. Line 343  domain.
343    
344    
345  \subsubsection{File {\it input/data}}  \subsubsection{File {\it input/data}}
346    \label{www:tutorials}
347    
348  This file, reproduced completely below, specifies the main parameters  This file, reproduced completely below, specifies the main parameters
349  for the experiment. The parameters that are significant for this configuration  for the experiment. The parameters that are significant for this configuration
# Line 626  notes. Line 633  notes.
633  \end{small}  \end{small}
634    
635  \subsubsection{File {\it input/data.pkg}}  \subsubsection{File {\it input/data.pkg}}
636    \label{www:tutorials}
637    
638  This file uses standard default values and does not contain  This file uses standard default values and does not contain
639  customisations for this experiment.  customisations for this experiment.
640    
641  \subsubsection{File {\it input/eedata}}  \subsubsection{File {\it input/eedata}}
642    \label{www:tutorials}
643    
644  This file uses standard default values and does not contain  This file uses standard default values and does not contain
645  customisations for this experiment.  customisations for this experiment.
646    
647  \subsubsection{File {\it input/windx.sin\_y}}  \subsubsection{File {\it input/windx.sin\_y}}
648    \label{www:tutorials}
649    
650  The {\it input/windx.sin\_y} file specifies a two-dimensional ($x,y$)  The {\it input/windx.sin\_y} file specifies a two-dimensional ($x,y$)
651  map of wind stress ,$\tau_{x}$, values. The units used are $Nm^{-2}$.  map of wind stress ,$\tau_{x}$, values. The units used are $Nm^{-2}$.
# Line 646  in MITgcm. The included matlab program { Line 656  in MITgcm. The included matlab program {
656  code for creating the {\it input/windx.sin\_y} file.  code for creating the {\it input/windx.sin\_y} file.
657    
658  \subsubsection{File {\it input/topog.box}}  \subsubsection{File {\it input/topog.box}}
659    \label{www:tutorials}
660    
661    
662  The {\it input/topog.box} file specifies a two-dimensional ($x,y$)  The {\it input/topog.box} file specifies a two-dimensional ($x,y$)
# Line 657  The included matlab program {\it input/g Line 668  The included matlab program {\it input/g
668  code for creating the {\it input/topog.box} file.  code for creating the {\it input/topog.box} file.
669    
670  \subsubsection{File {\it code/SIZE.h}}  \subsubsection{File {\it code/SIZE.h}}
671    \label{www:tutorials}
672    
673  Two lines are customized in this file for the current experiment  Two lines are customized in this file for the current experiment
674    
# Line 683  the vertical domain extent in grid point Line 695  the vertical domain extent in grid point
695  \end{small}  \end{small}
696    
697  \subsubsection{File {\it code/CPP\_OPTIONS.h}}  \subsubsection{File {\it code/CPP\_OPTIONS.h}}
698    \label{www:tutorials}
699    
700  This file uses standard default values and does not contain  This file uses standard default values and does not contain
701  customisations for this experiment.  customisations for this experiment.
702    
703    
704  \subsubsection{File {\it code/CPP\_EEOPTIONS.h}}  \subsubsection{File {\it code/CPP\_EEOPTIONS.h}}
705    \label{www:tutorials}
706    
707  This file uses standard default values and does not contain  This file uses standard default values and does not contain
708  customisations for this experiment.  customisations for this experiment.
709    
710  \subsubsection{Other Files }  \subsubsection{Other Files }
711    \label{www:tutorials}
712    
713  Other files relevant to this experiment are  Other files relevant to this experiment are
714  \begin{itemize}  \begin{itemize}
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