Realistic semiannual oscillation simulated in a middle atmosphere general circulation model

Details Realistic semiannual oscillation simulated in a middle atmosphere general circulation model Realistic semiannual oscillation simulated in a middle atmosphere general circulation model

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28..733m&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 4, p. 733-736

Physics

14

Atmospheric Composition And Structure: Middle Atmosphere-Energy Deposition, Meteorology And Atmospheric Dynamics: Mesospheric Dynamics, Meteorology And Atmospheric Dynamics: Middle Atmosphere Dynamics, Planetology: Fluid Planets: Atmospheres-Structure And Dynamics

Scientific paper

Although several general circulation modelling studies have presented simulations containing a tropical middle atmosphere semiannual oscillation (6 month period), none so far have been able to reproduce the observed amplitude and vertical structure extending into the mesosphere. Here we present simulations with the Canadian Middle Atmosphere Model which utilize a nonlinear broad-spectrum gravity-wave parameterization [Medvedev and Klaassen, 1995, 2000] and exhibit a semiannual oscillation in good agreement with observations.

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