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Pablo Zurita-Gotor and Isaac M. Held

controlled by the large-scale parameters of the breaking Kelvin wave. We believe that this KR instability will prove to be a robust and centrally important component of planetary atmospheres with O (1) thermal Rossby numbers. Whether this coupled wave instability mechanism also operates in moist atmospheres in the terrestrial regime, especially as the atmosphere warms, with the slowing of eastward wave propagation through convective coupling allowing the KR instability to form with smaller thermal

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Hitoshi Mukougawa, Shunsuke Noguchi, Yuhji Kuroda, Ryo Mizuta, and Kunihiko Kodera

1. Introduction Recently, Kodera et al. (2008) revealed observational evidence of downward-propagating planetary waves from the stratosphere into the troposphere just after a stratospheric sudden warming (SSW) event in early March 2007. Based on a detailed analysis of the three-dimensional propagation of the planetary-scale wave packet, they showed that the wave packet incoming from the troposphere over Eurasia gradually deflects eastward and then propagates downward into the troposphere over

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Ben-Da Lin

1206 3OURNAL OF THE ATMOSPHERIC SCIENCES VOLUME39The Behavior of Winter Stationary Planetary Waves Forced by Topography and Diabatic Heating~ BEN-DA LIN2Department of Atmospheric Sciences, University of Washington, Seattle 98195(Manuscript received 13 October 1981, in final form 25 February 1982)ABSTRACT A primitive equation linear wave model is developed to examine the

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Ping Chen and Walter A. Robinson

1078 JOURNAL OF THE ATMOSPHERIC. SCIENCES VOL. 48, NO. 8The Effects of Transience on the ProPagation of Stratospheric Planetary Waves PING CHEN AND WALTER A. ROBINSONDepartment of Atmospheric Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois(Manuscript received 1 May 1990, in final form 15 November 1990)ABSTRACT The propagation of planetary.scale Rossby waves in the

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Christian Hauck and Volkmar Wirth

1. Introduction Linear quasigeostrophic theory on a hemisphere has sucessfully been applied to describe the vertical and meridional propagation of quasistationary planetary waves in the stratosphere (e.g., Matsuno 1970 , 1971 ; Karoly and Hoskins 1982 ; Wirth 1991 ; Braesicke 1994 ). The model was first formulated by Matsuno (1970) . Given a zonal mean basic state and some forcing at the tropopause level, Matsuno’s model yields the wave structure throughout the stratosphere. Overall, the

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Y. Hayashi and D. G. Golder

2068 JOURNAL OF THE ATMOSPHERIC SCIENCES VOt~UM~35The Generation of Equatorial Transient Planetary Waves: ControlExperiments with a GFDL General Circulation Model Y. HAY^sin ^sD D. G. G~nDX~ Geophysical Fluid Dynamics Laboratory, NOAA, Princeton University, Princeton, NJ 08540 (Manuscript received 1 May 1978, in final form 21 July 1978)ABSTRACT In order to study the generation of transient

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John R. Albers and Terrence R. Nathan

example, several authors (e.g., Coy et al. 1997 ; Newman et al. 2001 ; Hu and Tung 2003 ) have suggested a positive dynamical feedback mechanism in which observed high-latitude NH late winter and early spring cooling due to ozone loss strengthens the polar vortex. The strengthened polar vortex reduces the vertical propagation of planetary waves ( Charney and Drazin 1961 ), resulting in further cooling and thus further strengthening of the vortex. This view is supported by chemistry–coupled climate

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Mark R. Schoeberl and Marvin A. Geller

Auaus~r1977 MARK R. SCHOEBERL AND MARVIN A. GELLER 1235A Calculation of the Structure of Stationary Planetary Waves in Winter MARK R. SCHOEBERLt Aeronomy Laboratory, University of Illinois at Urbana-Champaign, Urbana 61801 MARW~ A. G~n~2A eronomy Laboratory and Laboratory for Atmospheric Research, Univ~sity of Illinois at Urbana-Champaign, Urbana 61801(Manuscript

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Y. Hayashi and D. G. Golder

VOL. 37, NO. 4 JOURNAL OF THE ATMOSPHERIC SCIENCES APRIL 1980The Seasonal Variation of Tropical Transient Planetary Waves Appearing in a GFDL General Circulation Model Y. HAYASHI AND D. G. GOLDERGeophysical Fiuid Dynamics Laboratory/NOAA, Princeton University, Princeton, NJ 08540(Manuscript received 28 February 1979, in final form 28 November 1979) ABSTRACT The seasonal variation of tropical transient

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Shyh-Chin Chen and Kevin E. Trenberth

15FEBRUARY 1988 SHYH-CHIN CHEN AND KEVIN E. TRENBERTH 657Orographically Forced Planetary Waves in the Northern Hemisphere Winter:Steady State Model with Wave-Coupled Lower Boundary Formulation SHYH-CHIN CHENDepartment of Atmospheric Sciences, University of lllinois, Urbana, Illinois KEVIN E. TRENBERTHNational Center for Atmospheric Research,* Boulder, Colorado(Manuscript received 25

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