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\section[Customizing MITgcm]{Doing it yourself: customizing the model configuration} |
\section[Customizing MITgcm]{Doing it yourself: customizing the model configuration} |
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\label{sect:customize} |
\label{sec:customize} |
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\begin{rawhtml} |
\begin{rawhtml} |
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<!-- CMIREDIR:customizing_mitgcm: --> |
<!-- CMIREDIR:customizing_mitgcm: --> |
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\end{rawhtml} |
\end{rawhtml} |
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for the packages are located in the package descriptions), their meaning, |
for the packages are located in the package descriptions), their meaning, |
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and their default values: |
and their default values: |
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{\footnotesize \begin{verbatim} |
\input{s_getstarted/text/main-parms.tex} |
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\end{verbatim} } |
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In what follows the parameters are grouped into categories related to |
In what follows the parameters are grouped into categories related to |
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the computational domain, the equations solved in the model, and the |
the computational domain, the equations solved in the model, and the |
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through the logical variables \textbf{usingCartesianGrid}, |
through the logical variables \textbf{usingCartesianGrid}, |
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\textbf{usingSphericalPolarGrid}, and \textbf{usingCurvilinearGrid}. |
\textbf{usingSphericalPolarGrid}, and \textbf{usingCurvilinearGrid}. |
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In the case of spherical and curvilinear grids, the southern |
In the case of spherical and curvilinear grids, the southern |
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boundary is defined through the variable \textbf{phiMin} which |
boundary is defined through the variable \textbf{ygOrigin} which |
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corresponds to the latitude of the southern most cell face (in |
corresponds to the latitude of the southern most cell face (in |
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degrees). The resolution along the x and y directions is controlled |
degrees). The resolution along the x and y directions is controlled |
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by the 1D arrays \textbf{delx} and \textbf{dely} (in meters in the |
by the 1D arrays \textbf{delx} and \textbf{dely} (in meters in the |
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\begin{description} |
\begin{description} |
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\item[initialization] \ |
\item[initialization] \ |
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The velocity components are initialized to 0 unless the simulation |
The initial horizontal velocity components can be specified from |
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is starting from a pickup file (see section on simulation control |
binary files \textbf{uVelInitFile} and \textbf{vVelInitFile}. |
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parameters). |
These files should contain 3D data ordered in an (x,y,r) fashion with |
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k=1 as the first vertical level (surface level). |
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If no file names are provided, the velocity is initialised to zero. |
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The initial vertical velocity is always derived from the horizontal velocity |
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using the continuity equation, even in the case of non-hydrostatic simulation |
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(see, e.g.: {\it tutorial\_deep\_convection/input/data}). |
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In the case of a restart (from the end of a previous simulation), |
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the velocity field is read from a pickup file |
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(see section on simulation control parameters) |
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and the initial velocity files are ignored. |
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\item[forcing] \ |
\item[forcing] \ |
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