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Next: 3.14.2 Forcing Up: 3.14 Held-Suarez Atmosphere MITgcm Previous: 3.14 Held-Suarez Atmosphere MITgcm Contents 3.14.1 OverviewThis example demonstrates using the MITgcm to simulate the planetary atmospheric circulation, with flat orography and simplified forcing. In particular, only dry air processes are considered and radiation effects are represented by a simple newtownien cooling, Thus this example does not rely on any particular atmospheric physics package. This kind of simplified atmospheric simulation has been widely used in GFD-type experiments and in intercomparison projects of AGCM dynamical cores [Held and Suarez, 1994].
The horizontal grid is obtain from the projection of a uniform gridded cube
to the sphere. Each of the 6 faces has the same resolution, with
The use of the
At this resolution, the configuration can be integrated forward
for many years on a single processor desktop computer.
Next: 3.14.2 Forcing Up: 3.14 Held-Suarez Atmosphere MITgcm Previous: 3.14 Held-Suarez Atmosphere MITgcm Contents mitgcm-support@mitgcm.org
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grid points. The equator line coincide with a grid line
and crosses, right in the midle, 4 of the 6 faces, leaving 2 faces
for the Northern and Southern polar regions.
This curvilinear grid requires the use of the 2nd generation exchange
topology (pkg/exch2) to connect tile and face edges,
but without any limitation on the number of processors.
coordinate with 20 equally spaced levels
(
, from
to 0
at the
top of the atmosphere) follows the choice of 
) coincide exactly.
No viscosity and zero diffusion are used here, but
a 
order 
