Realistic semiannual oscillation simulated in a middle atmosphere general circulation model

Authors
Medvedev, AS Klaassen, GP
Citation
As. Medvedev et Gp. Klaassen, Realistic semiannual oscillation simulated in a middle atmosphere general circulation model, GEOPHYS R L, 28(4), 2001, pp. 733-736
Citations number
21
Categorie Soggetti
Earth Sciences
Journal title
GEOPHYSICAL RESEARCH LETTERS
ISSN journal
00948276 → ACNP
Volume
28
Issue
4
Year of publication
2001
Pages
733 - 736
Database
ISI
SICI code
0094-8276(20010215)28:4<733:RSOSIA>2.0.ZU;2-U
Abstract
Although several general circulation modelling studies have presented simul ations containing a tropical middle atmosphere semiannual oscillation (6 mo nth period), none so far have been able to reproduce the observed amplitude and vertical structure extending into the mesosphere. Here we present simu lations 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 observat ions.