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Teses / dissertações sobre o tema "Rossby waves"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 25 de julho de 2025

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1

Cotto, Amaryllis. "Intermittently Forced Vortex Rossby Waves." FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/553.

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Wavelike spiral asymmetries are an intriguing aspect of Tropical Cyclone dynamics. Previous work hypothesized that some of them are Vortex Rossby Waves propagating on the radial gradient of mean–flow relative vorticity. In the Intermittently Forced Vortex Rossby Wave theory, intermittent convection near the eyewall wind maximum excites them so that they propagate wave energy outward and converge angular momentum inward. The waves’ energy is absorbed as the perturbation vorticity becomes filamented near the outer critical radii where their Doppler–shifted frequencies and radial group velocities

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2

Proehl, Jeffrey A. "Equatorial wave-mean flow interaction : the long Rossby waves /." Thesis, Connect to this title online; UW restricted, 1988. http://hdl.handle.net/1773/10960.

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3

Murphy, Darryl Guy. "Rossby waves in the Southern Ocean." Thesis, University of Exeter, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303178.

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4

Wood, R. G. "Rossby waves in mid-latitude oceans." Thesis, University of Essex, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379474.

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5

Kovalam, Sujata. "MF radar observations of tides and planetary waves." Title page, contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phk878.pdf.

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Copies of previously published articles inserted. Bibliography: p. 185-200. Data obtained from six radar stations covering a wide latitude range has been used to determine the global distribution of planetary waves and tides. In the process a number of data analyses techniques were considered for their characterisation.

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6

Fyfe, John. "A barotropic stability study of free and forced planetary waves /." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75433.

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The stability of free and forced planetary waves in a $ beta$-channel is investigated with a barotropic model. The forced waves at equilibrium result from a constant mean-zonal wind interacting with a finite-amplitude topography.<br>The frequencies of all infinitesimal perturbations to the equilibrium flows are determined numerically as a function of the flow parameters. The results are interpreted using a truncated spectral model and related to those of previous studies with infinite $ beta$-planes. In contrast to some earlier analytical studies we find that unstable long waves $(L sb{x}$ $>$

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7

Giannitsis, Constantine 1971. "Non-linear saturation of vertically propagating Rossby waves." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/53043.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, February 2001.<br>Includes bibliographical references (p. 203-208).<br>Linear quasi-geostrophic theory predicts an exponential amplitude increase with height for Rossby waves propagating vertically through a stratified atmosphere, as a result of wave activity density conservation. At the same time layer-wise conservation of potential enstrophy constrains wave amplitudes, given the limited amount of potential enstrophy available in the initial mean flow. A break down of linear theory is t

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8

Ash, Ellis R. "Rossby waves and mean currents in the Southern Ocean." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/11542.

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Dynamics in the Southern Ocean are dominated by the Antarctic Circumpolar Current (ACC), and this large eastward current has an important influence on the earth's climate. Output from the last six years of the Fine Resolution Antarctic Model, where the mean flow is known, is used to develop techniques for quantifying Rossby waves and eddy activity. Some eastward jets in the mean flow are found to act as waveguides for Rossby waves. Phase speeds are found to increase linearly with frequency, but do not vary with the strength of mean flow. The reason for this is demonstrated using the dispersion

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9

Yang, Gui-Ying. "Propagation of nonstationary Rossby waves and extratropical-tropical interaction." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.646005.

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The propagation of Rossby waves with positive and negative frequency, corresponding to eastward and westward phase speeds respectively, is investigated. The techniques used are theoretical analysis, ray tracing, and initial value problems in barotropic and baroclinic numerical models. It is found that the characteristics of positive and negative frequency Rossby waves can differ significantly from each other andfrom those of stationary, zero frequency Rossby waves. However, general deductions from studies of stationary Rossby waves are still found to be valid. Using an analytic Gill-type model

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10

Jonsson, Eskil. "Modelling the Formation and Propagation of Orographic Rossby Waves." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-325188.

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Orographic Rossby waves are the main mechanism by which the jet streams meander aroundthe Earth and have possibly far-reaching impacts on weather and climate (chapter 1). Hence,they are of particular importance to study and this project should serve as a starting point inwhat to consider when trying to model these waves. For example, we have to account forpressure gradients, Coriolis effect, orography, potential vorticity conservation and also Earth’scurvature at this scale. These are covered in detail in ch. 2 and adapted to the Shallow WaterEquations. In addition, some entry-level numerical

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11

Rivest, Chantal. "Topographically forced waves in a time-dependent flow." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63184.

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12

Choboter, Paul F. "Forced Rossby waves in a zero absolute vorticity gradient environment." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ37107.pdf.

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13

Kessler, William S. "Observations of long Rossby waves in the northern tropical Pacific /." Thesis, Connect to this title online; UW restricted, 1989. http://hdl.handle.net/1773/10971.

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14

Harlander, Uwe. "Asymptotic and numerical solutions of trapped Rossby waves in high-latitude shear flows with boundaries." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-214605.

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We consider the amplitudes of coastally trapped Rossby waves in a high-latitude shear flow on a modified ß-plane, where also the effect of the sphericity of the earth (c5-effect) is taken into account. We present a particular analytical solution and also asymptotic and numerical solutions. We find that the asymptotic WKB solutions are accurate compared to the numerical results. We show that the o-effect is most important for shorter waves and leads to an enhanced selection of trapped Rossby wave modes<br>Wir betrachten die Amplituden von küstennah gefangenen Rossby-Wellen in einer Scherströmun

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15

Fröhlich, Kristina, Alexander Pogoreltsev, and Christoph Jacobi. "Tides, Rossby and Kelvin waves simulated with the COMMA-LIM Model." Universitätsbibliothek Leipzig, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-217759.

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A 48-layer version of the COMMA-LIM (Cologne Model of the Middle Atmosphere – Leipzig Institute for Meteorology) three-dimensional global mechanistic model of the Earth\'s atmosphere from 0 km to 135 km with logarithmic pressure height coordinates was developed. The model is capable of reproducing the global structures and propagation of different planetary waves in the middle atmosphere. The contribution of gravity waves, tides, Rossby and Kelvin waves into the zonally averaged momentum budget of the mesosphere / lower thermosphere region has been investigated<br>Eine neue Version des COMMA-L

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16

Fröhlich, Kristina, Alexander Pogoreltsev, and Christoph Jacobi. "Tides, Rossby and Kelvin waves simulated with the COMMA-LIM Model." Wissenschaftliche Mitteilungen des Leipziger Instituts für Meteorologie ; 30 = Meteorologische Arbeiten aus Leipzig ; 8 (2003), S. 149-156, 2003. https://ul.qucosa.de/id/qucosa%3A15248.

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A 48-layer version of the COMMA-LIM (Cologne Model of the Middle Atmosphere – Leipzig Institute for Meteorology) three-dimensional global mechanistic model of the Earth\''s atmosphere from 0 km to 135 km with logarithmic pressure height coordinates was developed. The model is capable of reproducing the global structures and propagation of different planetary waves in the middle atmosphere. The contribution of gravity waves, tides, Rossby and Kelvin waves into the zonally averaged momentum budget of the mesosphere / lower thermosphere region has been investigated.<br>Eine neue Version des COMMA

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17

Ravia, Roni. "Excitation and dispersion of a Rossby wave train on the polar jet by an extra-tropical transition of a hurricane." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101167.

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The enhanced potential vorticity gradients along the polar jet serve as a wave guide for trapped Rossby waves. These tropopause level, synoptic scale Rossby waves are of primary importance for weather development at the surface. In particular, extreme weather events have been linked to the existence of overlying upper level meridionally elongated filaments of stratospheric (high potential vorticity) air which form during the breaking of these waves. Motivated by the desire to understand the conditions under which these waves are formed and to improve their predictability, the current thesis di

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18

Chen, Shuiming. "Vertical structure of mesoscale ocean currents in the Indian Ocean observation, numerical modeling and theory /." Thesis, University of Hawaii at Manoa, 2003. http://proquest.umi.com/pqdweb?index=0&did=765960941&SrchMode=2&sid=8&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1209408688&clientId=23440.

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19

Delk, Tracey Lee. "Intraseasonal, large-scale circulations and tropical cylcome activity over the Western North Pacific during Boreal summer /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FDelk.pdf.

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Thesis (M.S. in Meteorology and Physical Oceanography)--Naval Postgraduate School, June 2004.<br>Thesis advisor(s): Patrick Harr. Includes bibliographical references (p. 73-75). Also available online.

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20

Harlander, Uwe. "Some simple solutions of trapped Rossby waves in zonal barotropic multiple-jet flows." Universitätsbibliothek Leipzig, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-215362.

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This study concerns on trapped Rossby waves and local Rossby wave packets in zonal basic flows with two or more prominent extreme values (so called multiple-jet flows). For simplicity, most of the calculations are performed on the f-plane, but an extension to the ß-plane is also discussed. Under the assumption that the basic fiow is a solution to a special type of second order ordinary differential equation, we show that then the amplitudes of stationary trapped Rossby waves are solutions to an equation of the same type. We investigate the occurrence of trapped modal waves as well as the rays

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21

Boss, Emmanuel. "Dynamics of potential vorticity fronts /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/11031.

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22

Ménard, Richard. "Saturation d'ondes de gravité et balance non-linéaire." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65947.

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23

Crick, Andrew Paul Richard. "Rossby waves on shear flows and the noiseless generation of small scales." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598147.

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The framework of normal modes of a stable flow in a channel is reviewed: two kinds of modes, regular and singular, are found. This framework is then used to study an initial-value problem, with initial conditions consisting of super-positions of singular modes. Theoretical predictions are made concerning the excitation of regular modes in certain special cases. Chapter 3 describes numerical simulations of the relevant equations, which are shown to be in agreement with our predictions. In chapter 4 we review previous studies of non linear critical layers, in particular the asymptotic Stewartso

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24

Nikulin, Grigory. "Impact of Rossby waves on ozone distribution and dynamics of the stratosphere and troposphere." Doctoral thesis, Kiruna : Swedish institute of Space Physics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-596.

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25

Harlander, Uwe. "Asymptotic and numerical solutions of trapped Rossby waves in high-latitude shear flows with boundaries." Wissenschaftliche Mitteilungen des Leipziger Instituts für Meteorologie ; 12 = Meteorologische Arbeiten aus Leipzig ; 4 (1999), S. 170-176, 1999. https://ul.qucosa.de/id/qucosa%3A15132.

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We consider the amplitudes of coastally trapped Rossby waves in a high-latitude shear flow on a modified ß-plane, where also the effect of the sphericity of the earth (c5-effect) is taken into account. We present a particular analytical solution and also asymptotic and numerical solutions. We find that the asymptotic WKB solutions are accurate compared to the numerical results. We show that the o-effect is most important for shorter waves and leads to an enhanced selection of trapped Rossby wave modes.<br>Wir betrachten die Amplituden von küstennah gefangenen Rossby-Wellen in einer Scherströmu

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26

Hughes, Christopher William. "The effect of topography on ocean flow." Thesis, University of Oxford, 1992. http://ora.ox.ac.uk/objects/uuid:37b3f6b2-ce5f-45b3-b2ed-3325518b06bb.

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The rôle which topography plays in constraining ocean flow is investigated in several ways, mostly aimed at application to the Southern Ocean where topography is known to be important. The physics of topographic Rossby waves is discussed in some depth and a description of ocean flow in terms of a sum of topographic normal modes is developed. It is shown that the apparent incompleteness of topographic modes can often be circumvented by including a function which absorbs the nett input of potential vorticity. Some subtle problems with this description are dealt with, and a calculation of topogra

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27

Harlander, Uwe. "Some simple solutions of trapped Rossby waves in zonal barotropic multiple-jet flows." Wissenschaftliche Mitteilungen des Leipziger Instituts für Meteorologie ; 17 = Meteorologische Arbeiten aus Leipzig ; 5 (2000), S. 44-60, 2000. https://ul.qucosa.de/id/qucosa%3A15148.

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This study concerns on trapped Rossby waves and local Rossby wave packets in zonal basic flows with two or more prominent extreme values (so called multiple-jet flows). For simplicity, most of the calculations are performed on the f-plane, but an extension to the ß-plane is also discussed. Under the assumption that the basic fiow is a solution to a special type of second order ordinary differential equation, we show that then the amplitudes of stationary trapped Rossby waves are solutions to an equation of the same type. We investigate the occurrence of trapped modal waves as well as the rays

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28

Ishihara, Takashi, та Yukio Kaneda. "Frequency shifts of Rossby waves in the inertial subranges of β-plane turbulence". American Institute of Physics, 2001. http://hdl.handle.net/2237/7082.

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29

Bergman, Michael I. (Michael Ira). "Magnetohydrodynamics of the Earth's core : 1) steady, rotating magnetoconvection 2) magnetic Rossby waves." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/51501.

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30

Watanabe, Wandrey de Bortoli. "Propagação de ondas de Rossby em dois modelos quase-geostróficos." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/21/21135/tde-05092016-162955/.

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As ondas de Rossby são o mecanismo de ajuste às perturbações de grande escala dos fluidos geofísicos. Elas podem ser geradas localmente, forçadas pelo rotacional da tensão de cisalhamento do vento, ou remotamente, devido às perturbações na altura da picnoclina na borda leste. Medidas altimétricas da anomalia da altura do mar tem fornecido evidências robustas da existência destas ondas. Estudos recentes mostram que vórtices não lineares de mesoescala são responsáveis por uma grande parte da variabilidade dos registros altimétricos, tendo sido observados propagando juntamente com as ondas de Ros

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31

Richet, Oceane Tess. "Impact of ocean waves on deep waters mixing and large-scale circulation." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLX104/document.

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Les différents projets présentés dans cette thèse contribuent à la compréhension de plusieurs aspects clés de la circulation océanique. Le premier aspect que nous étudions porte sur les processus physiques à l'origine du mélange lié à la marée; deux processus ont été mis en évidence. Depuis la latitude critique vers l'équateur, la marée interne transfert son énergie à des ondes plus petite échelle via des instabilités triadiques résonnantes impliquant les ondes proche inertielles. Depuis la latitude critique vers le pôle, les ondes de marée interne continuent de transférer leur énergie à des o

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32

Corry, R. A. "Modelling the seasonal variation of the Florida current." Thesis, University of Oxford, 1985. http://ora.ox.ac.uk/objects/uuid:644edc47-15b5-491f-a2a3-a2c25c864791.

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The linear response of a two layer ocean model to a periodic wind stress curl in the presence of bottom topography has been investigated. For periods much less than the time taken for the wind generated baroclinic Rossby waves to pass over the topography (i.e. 'short' periods), the ocean response is primarily that for a homogeneous ocean and thus strongly modified by topography. For periods much longer than this time (i.e. 'long' periods), the Rossby waves compensate for the effect of topography and the non-topographic Sverdrup balance holds. For the Atlantic at 25°N, the long period limit is

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33

Delk, Tracey Lee. "Intraseasonal, large-scale circulations and tropical cyclcone activity over the Western North Pacific during Boreal summer." Thesis, Monterey, California. Naval Postgraduate School, 2004. http://hdl.handle.net/10945/1168.

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Approved for public release; distribution is unlimited.<br>Large-scale circulations in the 15-25 day period over the western North Pacific during northern summer were determined using the leading modes of a Singular Value Decomposition of 850 hPa winds and outgoing longwave radiation. Composites were constructed to define the wave patterns' structural characteristics. Their evolution is characterized by alternating cyclonic and anticyclonic equatorial anomalies that are linked to anomalous convective activity. Mid-latitude perturbations appear to contribute to the growth of new equatorial dist

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34

Khanyile, Bhekumuzi Sfundo. "An investigation of the atmospheric wave dynamics in the polar region using ground based instruments." Thesis, University of Fort Hare, 2011. http://hdl.handle.net/10353/447.

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Abstract This study presents the characteristics of small-scale gravity waves in the mesosphere region as derived from the imaging riometer data at high altitude (~90 km) over SANAE (72˚S, 3˚W). Wavelet analysis and FFT (Fast Fourier transform) have been applied to extract short period gravity wave parameters for the year 2000. The horizontal wavelength, phase speed and observed period of gravity waves are typically 10-100 km, 5-60 m.s-1 and 3-60 minutes, respectively. The horizontal propagation direction is north-eastward throughout the year. This could probably be due to selective filtering

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35

Krieger, Sebastian. "Estudo da variabilidade na distribuição espectral das ondas de Rossby baroclínicas no Altântico e em particular na região do arquipélago de Abrolhos." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/21/21132/tde-30062009-151822/.

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Um conjunto de 15 anos de dados de anomalia da altura da superfície do mar (h) dos altímetros TOPEX/Poseidon e Jason-1 interpolado por um método de médias ponderadas pelos coeficientes de autocorrelação é utilizado para verificar as variações espectrais de ondas de Rossby do primeiro modo baroclínico no Oceano Atlântico. O método de interpolação é inovador e foi desenvolvido especificamente para esta finalidade. Médias, tendência e climatologias mensais são calculadas para todo o globo. As tendências globais mostram regiões com tendência de aumento do nível do mar que podem superar a marca de

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36

Wilford, Graeme W. "The numerical solution of atmospheric models describing the interactions of inertio-gravity and Rossby waves." Thesis, University of Surrey, 1996. http://epubs.surrey.ac.uk/843580/.

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This thesis documents three years of work involved in the numerical solution of atmospheric wave models. Derivation of these models is established whilst introducing the basic physical laws governing fluid motion. Numerical techniques axe investigated with particular reference to the solution of parabolic and elliptic partial differential equations. Parallel computer systems are discussed and basic concepts introduced with the emphasis placed on distributed virtual parallelism. The role of inertio-gravity waves under the influence of cyclonic Rossby waves is investigated with respect to the pr

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37

Nakamura, Mototaka. "Characteristics of potential vorticity mixing by breaking Rossby waves in the vicinity of a jet." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/11730.

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Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1995.<br>Includes bibliographical references (p. 248-253).<br>by Mototaka Nakamura.<br>Sc.D.

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38

Atherton, Juli. "Linear and nonlinear Rossby waves in basins both with and without a thin meridional barrier." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/53129.

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Thesis (S.M.)--Joint Program in Physical Oceanography (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2002.<br>Includes bibliographical references (leaf 119).<br>The linear and nonlinear Rossby wave solutions are examined in homogeneous square basins on the [beta]-plane both with and without a thin meridional barrier. In the presence of the meridional barrier the basin is almost partitioned into two; only two small gaps of equal width, d, to the north and south of the barrier allow communication between

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39

Wiegand, Lars. "Equatorwards-breaking Rossby waves in the North Atlantic storm track : forecast quality, predictability and dynamics." Thesis, University of Leeds, 2011. http://etheses.whiterose.ac.uk/3359/.

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Upper-level disturbances (ULDs) penetrating from the extratropics into low lati- tudes are a frequent feature of the synoptic-scale circulation over the North Atlantic and can be involved in significant weather events such as heavy precipitation over the western and northern parts of Africa, or Saharan dust outbreaks. The present project is the first to systematically explore the huge dynamical information content of long-term data from the European Centre for Medium-Range Weather Forecasts operational ensemble prediction system (EPS) and from the recently established THORPEX Interactive Grand

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40

Phillips, A. "Dynamics of the Antarctic mesosphere and lower thermosphere /." Title page, contents and abstract only, 1989. http://web4.library.adelaide.edu.au/theses/09PH/09php5583.pdf.

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Thesis (Ph. D.)--University of Adelaide, Mawson Institute for Antarctic Research, 1990.<br>Copies of author's previously published articles inserted. Includes bibliographical references (leaves 219-226).

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41

Yamashita, Márcio Katsumi. "Análise da influência vertical de ondas de Rossby longas no Atlântico Sul." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/21/21135/tde-11122012-160207/.

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Ondas de Rossby longas são ondas de larga escala que se propagam para o oeste com escala espacial de algumas centenas a vários milhares de quilômetros e desempenham um papel crítico na regulação da circulação do oceano. Sua propagação promove deslocamentos verticais da termoclina, muitas vezes da ordem de dezenas de metros, e causa variações de altura da superfície do mar que podem ser observadas através de dados de satélites altimétricos. A hipótese deste estudo é que existe uma fração significativa da variabilidade da velocidade geostrófica na superfície, associada a sinais propagantes para

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42

Cardona, Orozco Yuley Mildrey. "Enhanced vertical mixing within mesoscale eddies due to high frequency winds in the south China sea." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44917.

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The South China Sea is a marginal basin with a complex circulation influenced by the East Asian Monsoon, river discharge and intricate bathymetry. As a result, both the mesoscale eddy field and the near-inertial energy distribution display large spatial variability and they strongly influence the oceanic transport and mixing. With an ensemble of numerical integrations using a regional ocean model, this work investigates how the temporal resolution of the atmospheric forcing fields modifies the horizontal and vertical velocity patterns and impacts the transport properties in the basin. The res

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Montezuma, Patrick Degret de. "Caracterização do acoplamento físico-biológico causado por ondas de Rossby baroclínicas." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/21/21132/tde-24092009-162736/.

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Ondas de Rossby do primeiro modo baroclínico em médias latitudes foram observadas em dados de anomalia da altura da superfície do mar dos radares altimétrico TOPEX/Jason-1 na última década. Entretanto, sinais similares são observados em dados de concentração de clorofila a obtidos através de dados na faixa espectral visível através do sensor SeaWiFs. Anomalias na concentração de clorofila que se propagam para oeste com períodos e comprimentos de onda característicos de ondas de Rossby, indicam que estas ondas induzem parte da variabilidade da produtividade primária em oceano aberto. O foco des

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Reason, Christopher James Charles. "Generation of annual period Rossby waves in the South Atlantic Ocean by the wind stress curl." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26030.

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A theoretical study is presented of generation of first mode annual period baroclinic Rossby waves by the observed wind stress curl in the South Atlantic and South West Indian Oceans. The forcing wind field for the area 15 S to 51 S, 45 W to 41 E was obtained from an harmonic analysis at the annual period of the monthly mean wind stress curl values derived from Hellerman and Rosenstein's 1983 data. The annual harmonic of the wind stress curl was then used to drive a linear, reduced gravity model of the South Atlantic and South West Indian Oceans bounded by the latitudes 15 S and 51 S and by l

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McCrystall, Michelle Roisin. "The impact of tropical sea surface temperature perturbations on atmospheric circulation over north Canada and Greenland." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/276908.

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Identifying the drivers of Arctic climate variability is essential for understanding the recent rapid changes in local climate and determining the mechanisms that cause them. Remote tropical sea surface temperatures (SST) have been identified in previous studies as having contributed to the recent positive trends in surface temperature and geopotential height at 200 hPa over north Canada and Greenland (1979-2012) through poleward propagating Rossby waves. However, the source and direction of wave propagation on to north Canada and Greenland (NCG) differs across climate datasets indicating that

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Norton, Andrew David. "Analysis of Ionospheric Data Sets to Identify Periodic Signatures Matching Atmospheric Planetary Waves." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/101791.

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Atmospheric planetary waves play a role in introducing variability to the low-latitude ionosphere. To better understand this coupling, this study investigates times when oscillations seen in both atmospheric planetary waves and ionospheric data-sets have similar periodicity. The planetary wave data-set used are temperature observations made by Sounding of the Atmosphere using Broadband Emission Radiometry (SABER). These highlight periods during which 2-Day westward propagating wave-number 3 waves are evident in the mesosphere and lower thermosphere. The ionospheric data-set is Total Electron C

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Osychny, Vladimir. "Analysis of the Gulf Stream path and Rossby waves in the North Atlantic based on satellite data /." View online ; access limited to URI, 2006. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3248239.

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Oliveira, Fabricio Sanguinetti Cruz de. "Sinais propagantes para oeste no oceano Atlântico: vórtices ou ondas de Rossby?" Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/21/21132/tde-19102010-164840/.

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A maior parte do sinal propagante para oeste nos oceanos é explicada pelas ondas de Rossby baroclínicas. Porém, vórtices de mesoescala podem interferir na identificação dessas ondas. A maior adversidade em se distinguir o sinal dessas feições é que os vórtices parecem propagar-se com uma velocidade aproximada à velocidade de fase das ondas. Um dos objetivos do presente trabalho é caracterizar os sinais propagantes para oeste em termos da sua velocidade de fase no Atlântico. A análise se baseia em de dados das anomalias da altura da superfície do mar (ASM) e da temperatura de superfície do mar

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Baldasso, Patricia. "Análise comparativa da dinâmica das ondas de Rossby a partir de anomalias da altura da superfície do mar obtidas por satélite e modelos numéricos." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/21/21135/tde-12052016-112017/.

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Dados de altura da superfície do mar medidos a partir de satélites altimétricos e saídas de dois modelos de circulação geral dos oceanos (OGCM for the Earth Simulator - OFES e Community Earth System Model - CESM) foram utilizados com o objetivo de verificar se modelos numéricos climáticos reproduzem ondas de Rossby de forma similar à observada em dados altimétricos no Atlântico Sul. Os modelos diferem quanto à forçante, o modelo OFES é forçado com dados do NECP-NCAR enquanto que o modelo CESM é acoplado com modelo atmosférico, de gelo e terrestre. Uma vez que essas ondas dependem da estrutura

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Zhang, Zheen [Verfasser]. "Regionalization of a Global Climate Change Scenario for the Bay of Bengal under Special Consideration of Rossby Waves and Coastal Kelvin Waves : Regionalisierung eines globalen Klimawandel-Szenarios für den Golf von Bengalen unter spezieller Berücksichtigung von Rossby- und Küsten-Kelvinwellen / Zheen Zhang." Hamburg : Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky, 2020. http://d-nb.info/1221084194/34.

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