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Rahul B. Mahajan and Gregory J. Hakim

1. Introduction Stability theories have traditionally been applied to midlatitudinal atmospheric shear flows to understand extratropical cyclogenesis and forecast errors. In both cases, the interest lies mainly in the growth rate of the disturbances rather than in the propagation rate. Nevertheless, investigation of the structure of analysis and forecast errors in the Pacific jet shows that, on average, the speed of the peak of the error packet is close to the speed of the mean jet-level zonal

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David J. Lorenz

1. Introduction This is the second paper of a three part series on the use of Rossby wave chromatography (RWC; Held and Phillips 1987 ) to understand the variability of the midlatitude jet and its response to external forcing. In the first paper in this series, we describe our implementation of RWC in a linearized nondivergent barotropic model and compare the RWC model to the results from a full general circulation model (GCM; Lorenz 2014a, manuscript submitted to J. Atmos. Sci. , hereafter L

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B. Kärcher, Th Peter, U. M. Biermann, and U. Schumann

3066 JOURNAL OF THE ATMOSPHERIC SCIENCES VOL. 53, No. 21The Initial Composition of Jet Condensation Trails B. K~RCHERLehrstuhl fiir Biokl~mtologie und lmm~ssionsforschung, Universitiit Mtinchen, Freising-Weihenstephan, Germany PETER AND U. M. Brag_MANNMPl flir Chemie, Mainz, Germany U. SCHUMANNDLR !nstitut ft~r Physik der Atrnosphdlre, Oberpfaffenhofen, Germany

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G. P. Williams

1. Introduction We continue the presentation begun in Williams (1996 , hereafter Part I) and extended in Williams (2002 , hereafter Part II) of solutions to a primitive equation model that examine dynamical processes thought to be relevant to the global circulations of the Jovian atmospheres. Here, the main concern is with generating the multiple jet streams and an equatorial superrotation of the form and scale seen on Jupiter and Saturn. In addressing this problem, we again explore the

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Yi Dai, Sharanya J. Majumdar, and David S. Nolan

and its environmental flow. A numerical modeling study by Shi et al. (1990) revealed that the simulated outflow layer was dominated by a narrow outflow jet, which itself was surrounded by secondary circulations. They also found that adding a forcing that accelerates the outflow within 500 km radially might intensify the TC, while accelerating the outflow outside of 500 km will weaken it. More recently, Rappin et al. (2011) argued that the weak inertial stability in the outflow layer was more

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Elizabeth A. Barnes and Dennis L. Hartmann

1. Introduction The eddy-driven jet and its variability exist within the region between the pole and the Hadley-driven subtropical jet. While the leading mode of variability of the eddy-driven jet is often associated with a meridional shifting of the zonal-mean zonal winds, Eichelberger and Hartmann (2007) showed in a simple general circulation model that in the presence of a strong subtropical jet, the leading mode describes a pulsing of the eddy-driven jet. As the eddy-driven jet nears the

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G. Mastrantonio, F. Einaudi, D. Fua, and D. P. Lalas

1730 JOURNAL OF THE ATMOSPHERIC SCIENCES VOLU~33Generation of Gravity Waves by Jet Streo_ms in the Atmosphere G. MASTRANTONIO~, F. EINAUDIa AND ~D. FUAlCooperative Institule for Research in Environmental Sciences, University of Colorado/NOAA, Boulder 80309D. P. LnLASs Department of Mechanical Engineering ,~dences, Wayne State Unieersity, Detroit, Mi~h. 4~JOJ (Manuscript received 25 Eebmary 1976

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M. J. Bell and A. A. White

15SEPTEMBER 1988 M.J. BELL AND A. A. WHITE 2571The Stability of Internal Baroclinic Jets: Some Analytical Results M. J. BELL AND A. A. WHITEMeteorological O.l~ce, London Road, Bracknell, Berkshire, United Kingdom(Manuscript received 29 September 1987, in final form 6 March 1988)ABSTRACT The stability of internal baroclinic jets to quasi-geostrophic, normal mode perturbations is studied. Someimportant

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Kunio M. Sayanagi, Raúl Morales-Juberías, and Andrew P. Ingersoll

1. Introduction The Voyager observations of Saturn revealed a wavy dark streak meandering in the light-colored band in the visible wavelengths around the 47°N planetographic latitude that completely encircled the planet ( Smith et al. 1982 ). This feature has since been termed the Ribbon, and its location coincides with the peak of an eastward zonal jet. The feature is sandwiched between cloud patterns that exhibit streaks suggesting their motions to be cyclonic to the north and anticyclonic to

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Hisashi Nakamura

2310 JOURNAL OF THE ATMOSPHERIC SCIENCES VOL. 50, NO. 14Horizontal Divergence Associated with Zonally Isolated Jet Streams* HISASHI NAKAMURAJoint Institute for the Study of the Atmosphere and Ocean. University of Washington, Seattle, Washington20 April 1992 and 20 October 1992ABSTRACT Horizontal divergence in the upper troposphere associated with zonally isolated jet streams in the climatologicalmean

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