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J. C. Alpert and S. K. Avery

OCTOBER 19~3 J.C. ALPERT, M. A. GELLER AND S. K. AVERY 2467'The Response of Stationary Planetary Waves to Tropospheric Forcing~ J. C. ALPERT AND M. A. GELLERLaboratory for Planetary Atmospheres, NASA/Goddard Space Flight Center, Greenbelt, MD 20771 S. K. AVERY2Department of Electrical Engineering, University of Illinois, Urbana 61801(Manuscript received 2 February 1983, in final

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James R. Holton

I DECEMBER 1984 NOTES AND CORRESPONDENCE 3427NOTES AND CORRESPONDENCEThe Generation of Mesospheric Planetary Waves by Zonally Asymmetric Gravity Wave Breaking~ JAMES R. HOLTON Department of.4tmospheric Sciences, University of Washington, Seattle WA 98195 2 June 1984 and 17 September 1984 ABSTRACT A semi-spectral numerical model is used to

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Ruhua Zhang, Wenshou Tian, Jiankai Zhang, Jinlong Huang, Fei Xie, and Mian Xu

stratosphere ( Matsuno 1970 ; Baldwin et al. 1994 ), they are closely connected to the upward fluxes of tropospheric planetary waves (e.g., Nakagawa and Yamazaki 2006 ; Garfinkel et al. 2010 ; Zhang et al. 2016 ). For example, the tropospheric blockings can impact the upward fluxes of planetary waves and further influence the development of stratospheric NAM events (e.g., Martius et al. 2009 ; Castanheira and Barriopedro 2010 ; Davini et al. 2014 ; Huang et al. 2017 , 2018 ). Other factors, such

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Christopher C. Walker and Gudrun Magnusdottir

1. Introduction This paper investigates whether nonlinear planetary wave reflection plays a role in establishing longitudinal asymmetries in the time-mean circulation of the wintertime extratropical troposphere. It has long been known that longitudinal asymmetries are produced by planetary waves excited by the earth's topography and by quasi-stationary longitudinal variations in heating ( Charney and Eliassen 1949 ; Smagorinsky 1953 ). As shown in Charney and Eliassen (1949) and in a number

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J. F. Scinocca and P. H. Haynes

1. Introduction There is strong evidence that much of the planetary wave activity observed in the wintertime stratosphere is excited in the troposphere (e.g., Randel 1987 and references therein). The most obvious tropospheric sources of planetary waves are associated with geographical asymmetries such as topography and spatially inhomogeneous heating (primarily due to land–sea contrasts). Stationary planetary wave patterns in the wintertime stratosphere are primarily due to these geographical

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Walter A. Robinson

15 DECEMBER 1986 WALTER A. ROBINSON 3109The Behavior of Planetary Wave 2 in Preconditioned Zonal Flows WALTER A. ROBINSONDepartment of Atmospheric Sciences, University of Washington, Seattle, WA 98195(Manuscript received 19 March 1986, in final form 14 July 1986)ABSTRACT The response of linear planetary wave 2 to changes in the isentropic zonally symmetric distribution of potentialvorticity (PV) is investigated

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John H. E. Clark and Thomas G. Rogers

2232 JOURNAL OF THE ATMOSPHERIC SCIENCES VOLVME35The Transport of Conservative Trace Gases by Planetary Waves JOHN H. ]~. CLARK AND THOMAS G. ROtERSDepartment of Meteorology, The Pennsylvania S~a~ University, University Park 16802(Manuscript received 25 April 1978, in final form 22 August 1978)ABSTRACT An analytical model for the horizontal and vertical transport of a conservative trace gas by a

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John R. Albers, George N. Kiladis, Thomas Birner, and Juliana Dias

–tropical teleconnection pattern and are part of a subclass of planetary waveguides discussed in previous studies (e.g., Hoskins and Ambrizzi 1993 ). As Rossby waves propagate along the Pacific and Atlantic waveguides, they eventually grow in amplitude and break ( Scott and Cammas 2002 ; Abatzoglou and Magnusdottir 2006 ; Hitchman and Huesmann 2007 ). As the waves break, large intrusions of high-PV air extend equatorward and downward from the lower stratosphere into the upper troposphere, while low-PV tropospheric

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Richard S. Lindzen

394 JOURNAL OF THE ATMOSPHERIC SCIENCES Vo~.~J~m27Internal ]Equatorial Planetary-Scale Waves in Shear Flow R~CaAaD S. Lnvoz~Dept. of the Geophydza~ Sciences, The University of Chicago(Manuscript received 19 October 1969)ABSTRACT The theory of internal equatorial planetary-scale waves as developed by Matsuno and by Lindzen isextended to include the effects of shear in the basic state. By means of a

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Lucy J. Campbell and Theodore G. Shepherd

1. Introduction The quasi-biennial oscillation (QBO) is an oscillation between easterly and westerly zonal winds that is observed in the equatorial stratosphere. It is known to result from momentum transfer via upward-propagating atmospheric waves. Atmospheric general circulation models (GCMs) are able to resolve the planetary-scale equatorial waves (Kelvin waves and mixed Rossby–gravity waves), and the role that these waves play in driving the QBO is well known. In general, GCMs have

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