/[MITgcm]/manual/s_phys_pkgs/text/gridalt.tex
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revision 1.9 by molod, Wed Apr 5 23:42:27 2006 UTC revision 1.14 by jmc, Mon Aug 30 23:09:21 2010 UTC
# Line 6  Line 6 
6    
7  \subsubsection {Introduction}  \subsubsection {Introduction}
8    
9  The gridalt package is designed to allow different components of MITgcm to  The gridalt package \citep{mol:09}
10    is designed to allow different components of MITgcm to
11  be run using horizontal and/or vertical grids which are different from the main  be run using horizontal and/or vertical grids which are different from the main
12  model grid. The gridalt routines handle the definition of the all the various  model grid. The gridalt routines handle the definition of the all the various
13  alternative grid(s) and the mappings between them and the MITgcm grid.  alternative grid(s) and the mappings between them and the MITgcm grid.
# Line 43  the mapping between the two vertical coo Line 44  the mapping between the two vertical coo
44  \begin{figure}[htbp]  \begin{figure}[htbp]
45  \vspace*{-0.4in}  \vspace*{-0.4in}
46  \begin{center}  \begin{center}
47  \includegraphics[height=2.4in]{part6/vertical.eps}  \includegraphics[height=2.4in]{s_phys_pkgs/figs/vertical.eps}
48  \caption{Vertical discretization for MITgcm (dark grey lines) and for the  \caption{Vertical discretization for MITgcm (dark grey lines) and for the
49  atmospheric physics (light grey lines). In this implementation, all MITgcm level  atmospheric physics (light grey lines). In this implementation, all MITgcm level
50  interfaces must coincide with atmospheric physics level interfaces.}  interfaces must coincide with atmospheric physics level interfaces.}
# Line 68  atmosphere (the boundary layer) is retai Line 69  atmosphere (the boundary layer) is retai
69  a second set of evolution equations for the atmospheric state variables on the modified grid.  a second set of evolution equations for the atmospheric state variables on the modified grid.
70  If the equation for the evolution of $U$ on $p^*$ can be expressed as:  If the equation for the evolution of $U$ on $p^*$ can be expressed as:
71  \[  \[
72  \left . {\partial U \over {\partial t}} \right |_{p^*}^{total} =  \left . \frac{\partial U}{\partial t} \right |_{p^*}^{total} =
73  \left . {\partial U \over {\partial t}} \right |_{p^*}^{dynamics} +  \left . \frac{\partial U}{\partial t} \right |_{p^*}^{dynamics} +
74  \left . {\partial U \over {\partial t}} \right |_{p^*}^{physics}  \left . \frac{\partial U}{\partial t} \right |_{p^*}^{physics}
75  \]  \]
76  where the physics forcing terms on $p^*$ have been mapped from the modified grid, then an additional  where the physics forcing terms on $p^*$ have been mapped from the modified grid, then an additional
77  equation to govern the evolution of $U$ (for example) on the modified grid is written:  equation to govern the evolution of $U$ (for example) on the modified grid is written:
78  \[  \[
79  \left . {\partial U \over {\partial t}} \right |_{p^{*m}}^{total} =  \left . \frac{\partial U}{\partial t} \right |_{p^{*m}}^{total} =
80  \left . {\partial U \over {\partial t}} \right |_{p^{*m}}^{dynamics} +  \left . \frac{\partial U}{\partial t} \right |_{p^{*m}}^{dynamics} +
81  \left . {\partial U \over {\partial t}} \right |_{p^{*m}}^{physics} +  \left . \frac{\partial U}{\partial t} \right |_{p^{*m}}^{physics} +
82  \gamma ({\left . U \right |_{p^*}} - {\left . U \right |_{p^{*m}}})  \gamma ({\left . U \right |_{p^*}} - {\left . U \right |_{p^{*m}}})
83  \]  \]
84  where $p^{*m}$ refers to the modified higher resolution grid, and the dynamics forcing terms have  where $p^{*m}$ refers to the modified higher resolution grid, and the dynamics forcing terms have
# Line 241  C*************************************** Line 242  C***************************************
242  \subsubsection {Gridalt Diagnostics}  \subsubsection {Gridalt Diagnostics}
243  \label{sec:pkg:gridalt:diagnostics}  \label{sec:pkg:gridalt:diagnostics}
244    
245    {\footnotesize
246  \begin{verbatim}  \begin{verbatim}
247    
248  ------------------------------------------------------------------------  ------------------------------------------------------------------------
# Line 248  C*************************************** Line 250  C***************************************
250  ------------------------------------------------------------------------  ------------------------------------------------------------------------
251  DPPHYS  | 20 |SM      ML      |Pascal          |Pressure Thickness of Layers on Fizhi Grid  DPPHYS  | 20 |SM      ML      |Pascal          |Pressure Thickness of Layers on Fizhi Grid
252  \end{verbatim}  \end{verbatim}
253    }
254    
255  \subsubsection {Dos and donts}  \subsubsection {Dos and donts}
256    
257  \subsubsection {Gridalt Reference}  \subsubsection {Gridalt Reference}
258    
259    \subsubsection{Experiments and tutorials that use gridalt}
260    \label{sec:pkg:gridalt:experiments}
261    
262    \begin{itemize}
263    \item{Fizhi experiment, in fizhi-cs-32x32x10 verification directory }
264    \end{itemize}
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