Title: Extended primitive equations in isentropic coordinates

Abstract: The primitive equations for atmospheric motion in isentropic coordinates were extended to
include an implicit dependence on water vapor content. In tropical regions where there is
abundance of water vapor, the additional horizontal forces arising from this new
perspective were found to be comparable to those in the traditional set of equations.
This finding seems to suggest an additional mechanism by which moisture gradients drive
the tropical atmospheric motion quite apart from the effect of moisture convergence and
latent heat release by condensation. We recommend the use of this extended set of
isentropic equations for quantitatively accurate and theoretically consistent global
isentropic analysis.

Speaker's website: http://www.ntu.edu.sg/home/kohty/spms/index.htm