NHSE Software Catalog

PrimEqModel

url

ftp://perelandra.cms.udel.edu/models/PrimEqModel/peqmod.sh.Z

author

R. Saravana / svn@amtp.cam.ac.uk

abstract

Implementation of a very simple 3-dimensional
primitive equation model, using pressure coordinates as described by Lorenz
(1960). The advantage of using pressure coordinates is that the equations of
motion take on a particularly simple form. The main disadvantage is that we
cannot easily apply a realistic boundary condition at the lower boundary,
i.e., it is not really possible to include the effects of surface topography.
The model we are about to describe assumes that the planetary surface is
essentially smooth, and that there is sufficient drag acting near the lower
boundary to make the details of the lower boundary condition quite
unimportant. This model would not be suitable for ``realistic'' simulation of
the Earth's climate (especially in the troposphere), but could be quite useful
for mechanistic models of isolated phenomena, and for studying idealized
planetary atmospheres.

reference

ftp://perelandra.cms.udel.edu/models/PrimEqModel/report.ps.Z

reference

ftp://perelandra.cms.udel.edu/models/PrimEqModel/report.ps.Z

contact

R. Saravana / svn@amtp.cam.ac.uk

keywords

pressure coordinates; primitive equation model;
application program; atmospheric dynamics

application

atmospheric primitive equation model on a sphere

comments

Distributed free for
research purposes. The software comes with absolutely no warranties
whatsoever. This software may be freely copied, and may also be modified,
provided the modified software continues to be freely available under the
same terms. This software may not be used for any commercial purpose.