Statistics – Computation
Scientific paper
Nov 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3222805k&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 22, CiteID L22805
Statistics
Computation
2
Biogeosciences: Modeling, Atmospheric Processes: Acoustic-Gravity Waves, Atmospheric Processes: Stratosphere/Troposphere Interactions, Atmospheric Processes: General Circulation (1223), Atmospheric Processes: Convective Processes
Scientific paper
We extend the Chun-Baik parameterization of convectively forced stationary gravity-wave drag by adding a set of discrete nonzero phase speeds to incorporate the effects of nonstationary gravity waves. The extended scheme is computationally very efficient in comparison with full spectral parameterizations and eliminates the need to specify the wave source information at the interface level. We validate the extended parameterization against an explicit simulation of convection over a tropical ocean. The distribution of the cloud-top momentum flux for a typical range of phase speeds is roughly similar to those from more refined studies. It is shown that nonstationary waves should be included to reproduce the vertical variation of explicitly simulated momentum flux.
Chun Hye-Yeong
Kim Young-Joon
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