/[MITgcm]/manual/s_phys_pkgs/text/gridalt.tex
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revision 1.13 by jmc, Fri Aug 27 13:15:37 2010 UTC revision 1.14 by jmc, Mon Aug 30 23:09:21 2010 UTC
# Line 69  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

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