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MITgcm has a number of novel aspects:
 it can be used to study both atmospheric and oceanic phenomena; one
hydrodynamical kernel is used to drive forward both atmospheric and oceanic
models  see fig 1.1
Figure 1.1:
MITgcm has a single dynamical kernel that can drive forward
either oceanic or atmospheric simulations.

 it has a nonhydrostatic capability and so can be used to study both
smallscale and large scale processes  see fig 1.2
Figure 1.2:
MITgcm has nonhydrostatic capabilities, allowing
the model to address a wide range of phenomenon  from convection
on the left, all the way through to global circulation patterns on the
right.

 finite volume techniques are employed yielding an intuitive
discretization and support for the treatment of irregular geometries using
orthogonal curvilinear grids and shaved cells  see fig 1.3
Figure 1.3:
Finite volume techniques (bottom panel) are user, permitting
a treatment of topography that rivals (terrain following)
coordinates.

 tangent linear and adjoint counterparts are automatically maintained
along with the forward model, permitting sensitivity and optimization
studies.
 the model is developed to perform efficiently on a wide variety of
computational platforms.
Key publications reporting on and charting the development of the model are
[30,39,38,5,40,6,9,37]:
Hill, C. and J. Marshall, (1995)
Application of a Parallel NavierStokes Model to Ocean Circulation in
Parallel Computational Fluid Dynamics
In Proceedings of Parallel Computational Fluid Dynamics: Implementations
and Results Using Parallel Computers, 545552.
Elsevier Science B.V.: New York
Marshall, J., C. Hill, L. Perelman, and A. Adcroft, (1997)
Hydrostatic, quasihydrostatic, and nonhydrostatic ocean modeling
J. Geophysical Res., 102(C3), 57335752.
Marshall, J., A. Adcroft, C. Hill, L. Perelman, and C. Heisey, (1997)
A finitevolume, incompressible Navier Stokes model for studies of the ocean
on parallel computers,
J. Geophysical Res., 102(C3), 57535766.
Adcroft, A.J., Hill, C.N. and J. Marshall, (1997)
Representation of topography by shaved cells in a height coordinate ocean
model
Mon Wea Rev, vol 125, 22932315
Marshall, J., Jones, H. and C. Hill, (1998)
Efficient ocean modeling using nonhydrostatic algorithms
Journal of Marine Systems, 18, 115134
Adcroft, A., Hill C. and J. Marshall: (1999)
A new treatment of the Coriolis terms in Cgrid models at both high and low
resolutions,
Mon. Wea. Rev. Vol 127, pages 19281936
Hill, C, Adcroft,A., Jamous,D., and J. Marshall, (1999)
A Strategy for Terascale Climate Modeling.
In Proceedings of the Eighth ECMWF Workshop on the Use of Parallel Processors
in Meteorology, pages 406425
World Scientific Publishing Co: UK
Marotzke, J, Giering,R., Zhang, K.Q., Stammer,D., Hill,C., and T.Lee, (1999)
Construction of the adjoint MIT ocean general circulation model and
application to Atlantic heat transport variability
J. Geophysical Res., 104(C12), 29,52929,547.
We begin by briefly showing some of the results of the model in action to
give a feel for the wide range of problems that can be addressed using it.
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Copyright © 2002
Massachusetts Institute of Technology 

