| 219 |
|
|
| 220 |
\begin{itemize} |
\begin{itemize} |
| 221 |
|
|
| 222 |
\item Line 7, \begin{verbatim} viscAh=4.E2, \end{verbatim} this line sets |
\item Line X, \begin{verbatim} viscAh=5.0E-6, \end{verbatim} this line sets |
| 223 |
the Laplacian friction coefficient to $400 m^2s^{-1}$ |
the Laplacian friction coefficient to $0.000006 m^2s^{-1}$, which is ususally |
| 224 |
|
low because of the small scale, presumably.... qqq |
| 225 |
|
|
| 226 |
|
\item Line X, \begin{verbatim}f0=0.5 , \end{verbatim} this line sets the |
| 227 |
|
coriolis term, and represents a tank spinning at qqq |
| 228 |
\item Line 10, \begin{verbatim} beta=1.E-11, \end{verbatim} this line sets |
\item Line 10, \begin{verbatim} beta=1.E-11, \end{verbatim} this line sets |
| 229 |
$\beta$ (the gradient of the coriolis parameter, $f$) to $10^{-11} s^{-1}m^{-1}$ |
$\beta$ (the gradient of the coriolis parameter, $f$) to $10^{-11} s^{-1}m^{-1}$ |
| 230 |
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|
| 231 |
\item Lines 15 and 16 |
\item Lines 15 and 16 |
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\begin{verbatim} |
\begin{verbatim} |
| 233 |
rigidLid=.FALSE., |
rigidLid=.TRUE., |
| 234 |
implicitFreeSurface=.TRUE., |
implicitFreeSurface=.FALSE., |
| 235 |
\end{verbatim} |
\end{verbatim} |
| 236 |
these lines suppress the rigid lid formulation of the surface |
|
| 237 |
|
these lines do the opposite of the following: |
| 238 |
|
suppress the rigid lid formulation of the surface |
| 239 |
pressure inverter and activate the implicit free surface form |
pressure inverter and activate the implicit free surface form |
| 240 |
of the pressure inverter. |
of the pressure inverter. |
| 241 |
|
|
| 247 |
and implicitly suppresses searching for checkpoint files associated |
and implicitly suppresses searching for checkpoint files associated |
| 248 |
with restarting an numerical integration from a previously saved state. |
with restarting an numerical integration from a previously saved state. |
| 249 |
|
|
|
\item Line 29, |
|
|
\begin{verbatim} |
|
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endTime=12000, |
|
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\end{verbatim} |
|
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this line indicates that the experiment should start finish at $t=12000s$. |
|
|
A restart file will be written at this time that will enable the |
|
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simulation to be continued from this point. |
|
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|
| 250 |
\item Line 30, |
\item Line 30, |
| 251 |
\begin{verbatim} |
\begin{verbatim} |
| 252 |
deltaTmom=1200, |
deltaT=0.1, |
| 253 |
\end{verbatim} |
\end{verbatim} |
| 254 |
This line sets the momentum equation timestep to $1200s$. |
This line sets the integration timestep to $0.1s$. This is an unsually |
| 255 |
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small value among the examples due to the small physical scale of the |
| 256 |
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experiment. |
| 257 |
|
|
| 258 |
\item Line 39, |
\item Line 39, |
| 259 |
\begin{verbatim} |
\begin{verbatim} |
| 260 |
usingCartesianGrid=.TRUE., |
usingCylindricalGrid=.TRUE., |
| 261 |
\end{verbatim} |
\end{verbatim} |
| 262 |
This line requests that the simulation be performed in a |
This line requests that the simulation be performed in a |
| 263 |
Cartesian coordinate system. |
Cartesian coordinate system. |
| 334 |
This file uses standard default values and does not contain |
This file uses standard default values and does not contain |
| 335 |
customizations for this experiment. |
customizations for this experiment. |
| 336 |
|
|
| 337 |
\subsubsection{File {\it input/windx.sin\_y}} |
\subsubsection{File {\it input/thetaPol.bin}} |
| 338 |
\label{www:tutorials} |
\label{www:tutorials} |
| 339 |
|
|
| 340 |
The {\it input/windx.sin\_y} file specifies a two-dimensional ($x,y$) |
The {\it input/thetaPol.bin} file specifies a three-dimensional ($x,y,z$) |
| 341 |
map of wind stress ,$\tau_{x}$, values. The units used are $Nm^{-2}$. |
map of initial values of $\theta$ in degrees Celsius. |
|
Although $\tau_{x}$ is only a function of $y$n in this experiment |
|
|
this file must still define a complete two-dimensional map in order |
|
|
to be compatible with the standard code for loading forcing fields |
|
|
in MITgcm. The included matlab program {\it input/gendata.m} gives a complete |
|
|
code for creating the {\it input/windx.sin\_y} file. |
|
| 342 |
|
|
| 343 |
\subsubsection{File {\it input/topog.box}} |
\subsubsection{File {\it input/bathyPol.bin}} |
| 344 |
\label{www:tutorials} |
\label{www:tutorials} |
| 345 |
|
|
| 346 |
|
|
| 347 |
The {\it input/topog.box} file specifies a two-dimensional ($x,y$) |
The {\it input/bathyPol.bin} file specifies a two-dimensional ($x,y$) |
| 348 |
map of depth values. For this experiment values are either |
map of depth values. For this experiment values are either |
| 349 |
$0m$ or {\bf -delZ}m, corresponding respectively to a wall or to deep |
$0m$ or {\bf -delZ}m, corresponding respectively to outside or inside of |
| 350 |
ocean. The file contains a raw binary stream of data that is enumerated |
the tank. The file contains a raw binary stream of data that is enumerated |
| 351 |
in the same way as standard MITgcm two-dimensional, horizontal arrays. |
in the same way as standard MITgcm two-dimensional, horizontal arrays. |
|
The included matlab program {\it input/gendata.m} gives a complete |
|
|
code for creating the {\it input/topog.box} file. |
|
| 352 |
|
|
| 353 |
\subsubsection{File {\it code/SIZE.h}} |
\subsubsection{File {\it code/SIZE.h}} |
| 354 |
\label{www:tutorials} |
\label{www:tutorials} |
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