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Dissertations / Theses on the topic 'Intraseasonal Oscillation in Atmosphere'

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Published: 6 September 2023

Last updated: 31 July 2025

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1

Teng, Haiyan. "Interannual variations of the boreal summer intraseasonal oscillation." Thesis, University of Hawaii at Manoa, 2003. http://proquest.umi.com/pqdweb?index=0&did=765086511&SrchMode=2&sid=2&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1233255418&clientId=23440.

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2

Burton, Kenneth R. "Influence of Antarctic oscillation on intraseasonal variability of large-scale circulations over the Western North Pacific /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Mar%5FBurton.pdf.

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3

Burton, Kenneth R. Jr. "Influence of Antarctic oscillation on intraseasonal variability of large-scale circulations over the Western North Pacific." Thesis, Monterey California. Naval Postgraduate School, 2005. http://hdl.handle.net/10945/2310.

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Approved for public release, distribution is unlimited<br>This study examines Southern Hemisphere mid-latitude wave variations connected to the Antarctic Oscillation (AAO) to establish connections with the 15- to 25-day wave activity in the western North Pacific monsoon trough region. The AAO index defined from the leading empirical orthogonal functions of 700 hPa height anomalies led to seven distinct circulation patterns that vary in conjunction with the 15- to 25-day monsoon trough mode. For nearly one half of the significant events the onset of 15- to 25-day monsoon trough convective activ

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4

McDaniel, Brent. "Intraseasonal Dynamical Evolution of the Northern Annular Mode." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6965.

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Recent observational and modeling studies indicate a robust dynamical coupling between the stratosphere and troposphere during boreal winter. This coupling occurs in association with the Northern Annular Mode (NAM), which itself accounts for a significant fraction of the variability of the extratropical circulation. While monthly NAM dynamics have been studied previously, the mechanisms that give rise to NAM variability on short intraseasonal timescale are still unclear. We perform regression analyses, case studies, and composites based on periods of dynamical growth/decay to investigate th

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5

Agudelo, Paula A. "Role of Local Thermodynamic Coupling in the Life Cycle of the Intraseasonal Oscillation in the Indo-Pacific Warm Pool." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19834.

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Intraseasonal oscillations (ISOs) are important elements of the tropical climate with time-scales of 20-80 day. The ISO is poorly simulated and predicted by numerical models. This work presents a joint diagnostic and modeling study of the ISO that examines the hypothesis that local coupling between the ocean and the atmosphere is essential to the existence and evolution of the ISO in the Indo-Pacific warm pool region. Low-level moistening during the transition phase preconditions the atmosphere for deep convection. The vertical structure of ISO from the ECMWF coupled model during different ph

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6

Zuluaga-Arias, Manuel D. "Spatial and temporal distribution of latent heating in the South Asian monsoon region." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31753.

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Thesis (M. S.)--Earth and Atmospheric Sciences, Georgia Institute of Technology, 2010.<br>Committee Chair: Peter J. Webster; Committee Member: Judith A. Curry; Committee Member: Robert X. Black. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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7

Matthews, Adrian John. "The intraseasonal oscillation." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358464.

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8

Hoyos, Carlos D. "Intraseasonal Variability: Processes, Predictability and Prospects for Prediction." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-04102006-135125/.

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Thesis (Ph. D.)--Earth and Atmospheric Sciences, Georgia Institute of Technology, 2006.<br>Dr. Peter J. Webster, Committee Chair ; Dr. Judith A. Curry, Committee Member ; Dr. Robert Dickinson, Committee Member ; Dr. Robert X. Black, Committee Member ; Dr. Predrag Cvitanovic, Committee Member.

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9

Charlesworth, Oliver. "Intraseasonal European climate variability and interactions with the Madden-Julian Oscillation." Thesis, University of East Anglia, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.490613.

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The seasonally-varying interaction between the Madden-Julian Oscillation (MJO) and .the northern extratropics, specifically the North Atlantic and Europe region, on intraseasonal timescales is studied. When the MJO is observed using composite and Monte-Carlo significance testing, a direct response to the tropical dynamics is found over the North Atlantic and Europe. When the MJO convection is active over the Indian Ocean, significant anticyclonic anomalies at the 95% confidence level are frequently found over the UK and eastern North Atlantic region. Approximately 10 to 20 days later, when the

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10

Valad?o, Cati Elisa de Avila. "Impacts of the Madden-Julian oscillation on intraseasonal precipitation over northeast Brazil." Universidade Federal do Rio Grande do Norte, 2015. http://repositorio.ufrn.br/handle/123456789/20695.

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11

Drbohlav, Hae-Kyung Lee. "Mechanism of the intraseasonal oscillation in the South Asian summer monsoon region." Thesis, University of Hawaii at Manoa, 2002. http://proquest.umi.com/pqdweb?index=0&did=765064431&SrchMode=1&sid=1&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1209149181&clientId=23440.

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12

Ruth, Sarah L. "The quasi-biennial oscillation in the middle atmosphere." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303598.

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13

Batstone, Crispian Peter. "Ocean-atmosphere interactions within the Madden-Julian Oscillation." Thesis, University of East Anglia, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398818.

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14

Fraza, Erik. "The Global 3-Dimensional Structure of the Pacific Decadal Oscillation." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1281395658.

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15

Klingaman, Nicholas Pappas. "The intraseasonal oscillation of the Indian summer monsoon : air-sea interactions and the potential for predictability." Thesis, University of Reading, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501512.

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Summer monsoon rainfall accounts for at least 80% of the annual-total precipitation in many Indian states. Intraseasonal variations (ISV) in rainfall produce floods and droughts that can devastate agriculture. ISVs are dominated by a 30-50 day northward-propagating oscillation (NPISO) between the eastern equatorial Indian Ocean (EEqIO) and India. This thesis evaluates the hypothesis that atmosphere-ocean interactions are critical to the NPISO's period, intensity, and propagation. Two simple NPISO indices are created from lag correlations in outgoing longwave radiation between the oscillation's

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16

Hood, Lon L. "QBO/solar modulation of the boreal winter Madden-Julian oscillation: A prediction for the coming solar minimum." AMER GEOPHYSICAL UNION, 2017. http://hdl.handle.net/10150/624342.

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The Madden-Julian oscillation (MJO), also known as the 30-60day oscillation, is the strongest of the intraseasonal climate oscillations in the tropics and has significant derivative effects on extratropical circulation and intraseasonal climate. It has recently been shown that the stratospheric quasi-biennial oscillation (QBO) modulates the amplitude of the boreal winter MJO such that MJO amplitudes are larger on average during the easterly phase (QBOE) than during the westerly phase (QBOW). A major possible mechanism is the decrease in static stability in the lowermost stratosphere under QBOE

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17

Youderian, Bria Danielle. "Influence of the Atlantic Multidecadal and the Pacific Decadal Oscillations on Hemispheric Air Temperature and Cloud Cover." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250099376.

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18

Maloney, Eric Daniel. "Frictional convergence and the Madden-Julian oscillation /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/10049.

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19

Agard, John Vincent. "A global and tropical quasi-decadal oscillation of the atmosphere and Ocean." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/114373.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 72-75).<br>An oscillatory, quasi-periodic signal with a period of around 10 years was found in radiosonde- and satellite-measured datasets of lower stratospheric temperature. Power spectrum analysis and Fourier decomposition were used to characterize the temporal and vertical manifestations of the signal, while EOF analyses were used to analyze its spatial characteristics. The oscillation was

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20

Donald, Alexis. "The application of the real-time multivariate Madden-Julian Oscillation Index to intraseasonal rainfall forecasting in the mid-latitudes." University of Southern Queensland, Faculty of Sciences, 2004. http://eprints.usq.edu.au/archive/00001423/.

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The Madden-Julian Oscillation is a tropical atmospheric phenomenon detected as anomalies in zonal winds, convection and cloudiness. This perturbation has a definitive timescale of about thirty to sixty days, allowing its signal to be extracted from background data. The Madden-Julian Oscillation originates over the western Indian Ocean and generates a convective region which moves east along the equatorial region. This perturbation is thought to contribute to the timing and intensity of the eastern hemisphere monsoons, the El Niño/ Southern Oscillation and tropical storms and cyclones. The curr

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21

Lavender, Sally L. "Modelling the intraseasonal variability of the West African monsoon : influence of the Madden-Julian oscillation and regional soil moisture anomalies." Thesis, University of East Anglia, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504848.

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The mechanisms controlling the intraseasonal variability of the West African monsoon (WAM) are investigated. Knowledge of these mechanisms will help to improve forecasting capabilities over the West African region. There are two dominant modes of variability, one within the 25-60-day band and one with an average period of 15 days. Observations show that the 25-60-day variability in rainfall over West Africa is influenced by the Madden-Julian oscillation (MJO). A number of mechanisms have been suggested. However, previous observational studies are not able to easily distinguish between cause an

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22

Quilfen, Yves. "Variations interannuelles de l'atmosphere atlantique tropicale et interactions avec l'ocean." Paris 6, 1987. http://www.theses.fr/1987PA066592.

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La variabilite interannuelle du systeme couple ocean-atmosphere dans l'ocean atlantique tropical est etudiee a l'aide de donnees historiques. Les fichiers de donnees couvrent l'atlantique entre 30 non=n et 20 non=s, de 1964 a 1979. Les differentes echelles de temps et d'espace sont determinees par l'intermediaire de l'analyse en composantes principales des fichiers de pression atmospherique au niveau de la mer, de temperature de surface de la mer et de tension du vent. Un signal basse frequence est associe a la variabilite atmospherique dans la zone equatoriale. Il fait partie des variations d

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23

施錦杯 and Kam-pui Sze. "Effects of the interaction of atmosphere and ocean on humanactivities." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31254378.

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24

Semedo, Alvaro A. M. "The North Atlantic oscillation influence on the wave regime in Portugal : an extreme wave event analysis /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Mar%5FSemedo.pdf.

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25

Sze, Kam-pui. "Effects of the interaction of atmosphere and ocean on human activities /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21301414.

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26

Marshall, Samuel David. "Sloping convection : an experimental investigation in a baroclinic annulus with topography." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:ca9cfaf5-49e8-4e30-b93a-65c27d1c8a15.

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This thesis documents a collection of experimental investigations in which a differentially-heated annulus was used to investigate the effects of topography on the atmospheric and oceanic circulation. To this end a number of experiments were devised, each using a different topographic base to study a different aspect of the impact of topography, motivated by the most notable outstanding questions found in a review of the literature, namely exploring the effects of topographic resonance, blocking via partial barriers, and azimuthally differential-heating via thermal topography. First of all, wh

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27

Li, Wei 1982. "The variability of North American winter surface temperature and its relation to the sea surface temperature /." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101604.

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The first two empirical orthogonal functions of the winter (DJF) surface air temperature (SAT) over North America are associated with the North Atlantic Oscillation (NAO) and the Pacific/North American (PNA) pattern in the NCEP reanalysis. Lagged correlations between the North American SAT structures and the sea surface temperature (SST) were computed. There is a small lag between the tri-pole SST anomaly pattern of the North Atlantic Ocean and the first SAT mode. The second SAT mode lags the eastern Tropical Pacific SST anomaly by two months, associated with ENSO through the winter. A similar

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28

Boschat, Ghyslaine. "Variabilité interannuelle et prévisibilité du système Mousson Indienne d'Eté - Oscillation Australe El Niño." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2012. http://tel.archives-ouvertes.fr/tel-00789861.

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La Mousson Indienne d'été (ISM) et l'Oscillation Australe El Niño (ENSO) sont parmi les phénomènes climatiques les plus énergétiques et importants de la planète. Bien qu'ils soient localisés dans la région tropicale Indo-Pacifique, ces deux phénomènes peuvent avoir des répercussions climatiques à l'échelle globale via les téléconnections atmosphériques. Cette thèse vise à améliorer notre compréhension et la prévisibilité interannuelle d'ENSO et de l'ISM, en analysant leurs téléconnections grandes échelles, et en déterminant le rôle, dans cette prévisibilité, des modes majeurs de variabilité in

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29

Chen, Ying-quei. "Pedictability of ENSO : optimal error growth and forecast skill /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/10023.

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30

Jacobi, Christoph. "Possible signal of tropospheric circulation patterns in middle atmosphere dynamics, Collm (51.3°N, 13°E) mesosphere lower thermosphere winds: 1979 - 2008." Universität Leipzig, 2009. https://ul.qucosa.de/id/qucosa%3A16368.

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Time series of monthly mean Collm mesosphere/lower thermosphere winds 1979 - 2008 are analyses with respect to a possible correlation with North Atlantic Oscillation (NAO) and Southern Oscillation (SO) indices. There is a positive correlation with both indices until the middle 1990s, but later the correlation decreases or even reverses. Owing to the coupling of the SO with the NAO the change of correlation occurs broadly at the same time. The change of correlation is probably connected with changes of the middle atmosphere mean dynamics.<br>Zeitreihen von Monatsmittelwerten des Windes in der M

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31

Melaragno, Scott Andrew. "The Global Three-Dimensional Structure for the Developmental Phase of ENSO." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1281658857.

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32

SOUSA, Edicarlos Pereira de. "Padrões climáticos de eventos extremos de chuva utilizando análise multivariada e de ondeletas no Estado de Minas Gerais." Universidade Federal de Campina Grande, 2016. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1485.

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Submitted by Maria Medeiros (maria.dilva1@ufcg.edu.br) on 2018-08-17T14:30:53Z No. of bitstreams: 1 EDICARLOS PEREIRS DE SOUSA - TESE (PPGMet) 2016.pdf: 7117312 bytes, checksum: 96b3ee401a9f1387b098676da0e967eb (MD5)<br>Made available in DSpace on 2018-08-17T14:30:53Z (GMT). No. of bitstreams: 1 EDICARLOS PEREIRS DE SOUSA - TESE (PPGMet) 2016.pdf: 7117312 bytes, checksum: 96b3ee401a9f1387b098676da0e967eb (MD5) Previous issue date: 2016-05-31<br>Capes<br>O estado de Minas Gerais, localizado na região Sudeste do Brasil, possui um território planáltico, com áreas mais elevadas situadas na porçã

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33

Illig, Serena. "Variabilité basse fréquence de l'Atlantique Tropical:Rôle de la dynamique océanique équatoriale et Influence d'El Niño Southern Oscillation." Phd thesis, Université Paul Sabatier - Toulouse III, 2005. http://tel.archives-ouvertes.fr/tel-00260664.

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L'objectif de cette thèse est l'étude de la variabilité interannuelle en Atlantique Tropical: nous étudions les rôles des processus couplés liés à la dynamique linéaire et ceux liés à l'influence de la variabilité du Pacifique Tropical de type El Niño. Les résultats obtenus suggèrent que la variabilité associée aux propagations d'ondes de Kelvin et de Rossby joue un rôle essentiel dans l'ajustement océanique au forçage par le vent et plus généralement dans les processus couplés océan-atmosphère en Atlantique Équatorial. Les résultats de simulations couplées montrent que l'énergie dans la bande

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34

Gutierrez, Enver Manuel Amador Ramirez. "Interação multi-escala entre o oceano e a atmosfera e a variabilidade de baixa frequência." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/14/14133/tde-27062013-112941/.

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No presente trabalho utiliza-se um m´etodo multi-escala para estudar de forma te´orica as intera¸coes nao lineares entre o oceano e a atmosfera atrav´es de ressonancia onda-onda. Desenvolve-se uma hierarquia de modelos acoplados oceano-atmosfera nao lineares que foram escalonados convenientemente para representar as principais escalas de variabilidade clim´atica (i.e., intrasazonal, interanual, e decenal). A enfase dos modelos desenvolvidos foi dado para a regiao tropical. As fontes de nao linearidade inclu´das no modelo sao de dois tipos: I) nao linearidade intr´nsica (advectiva) e II) nao li

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35

Vautard, Robert. "Les echelles de temps de la circulation atmospherique : couplage interne et approches de la parametrisation des modes rapides." Paris 6, 1987. http://www.theses.fr/1987PA066657.

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Les interactions entre les modes lents et les modes rapides de la circulation atmospherique sont examinees a travers deux problemes. Le premier concerne le couplage entre les ondes de gravite et les ondes de rossby. En raison des erreurs d'observation, les modeles de prevision numerique engendrent des ondes de gravite rapides irrealistes. Ces modes doivent donc etre initialement filtres. Le probleme est aborde de maniere theorique par l'etude de l'existence et des proprietes d'une variete invariante de l'espace des phases, appelee "variete lente", qui est sensee contenir l'attracteur du system

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36

Chen, Chia-Jeng. "Hydro-climatic forecasting using sea surface temperatures." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/48974.

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A key determinant of atmospheric circulation patterns and regional climatic conditions is sea surface temperature (SST). This has been the motivation for the development of various teleconnection methods aiming to forecast hydro-climatic variables. Among such methods are linear projections based on teleconnection gross indices (such as the ENSO, IOD, and NAO) or leading empirical orthogonal functions (EOFs). However, these methods deteriorate drastically if the predefined indices or EOFs cannot account for climatic variability in the region of interest. This study introduces a new hydro-climat

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37

Vialard, Jérôme. "Variabilité océan-atmosphère du secteur Indo-Pacifique." Habilitation à diriger des recherches, Université Pierre et Marie Curie - Paris VI, 2009. http://tel.archives-ouvertes.fr/tel-00755963.

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Les océans Pacifique et Indien tropicaux se partagent la plus grande étendue d'eau chaude et de convection profonde de la planète. Cette région est le siège de la branche ascendante de la circulation de Walker, circulation atmosphérique d'échelle planétaire parfois décrite comme la " machine thermique " de la Terre. Cette région, dont les répercussions sur le climat sont importantes, est aussi source de variabilité océanique et atmosphérique aux échelles intrasaisonnières et interannuelles . En effet, la variabilité interannuelle associée à El Niño, dans l'océan Pacifique, et - dans une moindr

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Lutringer-Paquet, Audrey. "Reconstruction de la variabilité des eaux intermédiaires par l'étude géochimique des coraux profonds." Phd thesis, Université Paris Sud - Paris XI, 2005. http://tel.archives-ouvertes.fr/tel-00159102.

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Les variations des eaux intermédiaires constituent un point important dans la compréhension des<br />réponses de l'océan aux changements rapides du climat. Cependant, la variabilité de ces masses d'eau<br />est encore peu documentée en raison du manque d'enregistrements fiables et pouvant être datés de<br />manière précise. C'est pour répondre à cette attente que cette étude à été proposée : il s'agissait de<br />développer l'utilisation des coraux profonds et en particulier de leur signal isotopique pour les<br />reconstitutions paléo-océanographiques.<br />Dans un premier temps, une méthode

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Kline, Wayne T. "Climatic Factors Associated with the Rapid Wintertime Increase in Cloud Cover across the Great Lakes Region." Kent State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=kent1240256371.

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40

Marini, Camille. "Etude des causes et effets de la circulation méridienne de retournement Atlantique." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00994862.

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Nous étudions d'abord l'influence du mode annulaire Sud (SAM) sur la circulation méridienne de retournement Atlantique (AMOC) dans une simulation de contrôle avec IPSLCM4. Une phase positive du SAM, correspondant à une intensification des vents d'Ouest soufflant au Sud de 45° S, entraîne après 8 ans une accélération de l'AMOC, via une téléconnection atmosphérique peu réaliste. Une accélération de l'AMOC suit de 70 ans une phase positive du SAM, due à la propagation d'anomalies de sel du Sud vers le Nord de l'Atlantique. Ensuite, nous étudions dans quelle mesure l'Oscillation Multidécennale Atl

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Roehrig, Romain. "Variabilité intrasaisonnière de la mousson africaine : caractérisation et modélisation." Phd thesis, Université Paris-Est, 2010. http://tel.archives-ouvertes.fr/tel-00560954.

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La variabilité intrasaisonnière de la mousson d'Afrique de l'Ouest se caractérise par une alternance de phases sèches et humides, dont les impacts pe uvent être dramatiques sur les populations locales. Cette variabilité met en jeu un grand nombre d'échelles spatiales et temporelles, rendant difficile sa compréhension, sa modélisation et sa prévision. Cette thèse propose quelques éclairages sur ces différentes thématiques. La dépression thermique saharienne est un acteur majeur de la mousson africaine. La caractérisation de sa variabilité intrasaisonnière a permis de mettre en évidence, à l'éch

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42

Flaounas, Emmanouil. "Analyse de la mise en place de la mousson Africaine : dynamique régionale ou forçage de grande échelle ?" Phd thesis, Paris 6, 2010. http://www.theses.fr/2010PA066625.

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La saison des pluies en Afrique de l'Ouest est primordiale pour les populations locales. La mise en place de la mousson (MAO) se produit fin juin et correspond à un affaiblissement global de la convection sur la région puis une transition brutale des précipitations de la côte de Guinée vers le Sahel. C'est le mécanisme responsable de ce « saut » qui est étudié ici à partir d'expériences numériques. La capacité du modèle à aire limitée WRF à reproduire la circulation de la MAO en 2006 a d'abord été évaluée. Différentes paramétrisations de la convection et de la couche limite ont été testées et

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IZUMO, Takeshi. "Le sous-courant équatorial et les échanges de masse et de chaleur associés dans le Pacifique tropical : variabilité, liens avec les événements El Niño-La Niña." Phd thesis, Université Paul Sabatier - Toulouse III, 2003. http://tel.archives-ouvertes.fr/tel-00006355.

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Le sous-courant équatorial (EUC), en alimentant l'upwelling équatorial, peut avoir une forte influence sur la température de surface (SST) du Pacifique équatorial Est et donc sur la variabilité associée à El Niño. L'EUC et les cellules de circulation méridienne (shallow subtropical/tropical overturning cells, STCs/TCs) l'alimentant sont étudiés en combinant données in situ et modélisation. Les trajectoires de masses d'eau sont calculées dans des simulations réalistes (le modèle OPA forcé par les vents des réanalyses NCEP sur 1948-1999 ou des satellites ERS sur 1992-1999). Leur analyse met en é

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Thual, Sulian. "Modèles réduits pour l'etude des mécanismes et de la modulation de l'oscillation australe El Niño." Phd thesis, Université Paul Sabatier - Toulouse III, 2012. http://tel.archives-ouvertes.fr/tel-00772756.

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L'Oscillation Australe El Niño (ENSO pour El Niño Southern Oscillation) est la fluctuation climatique la plus intense sur Terre après le cycle saisonnier. L'observation, la compréhension et la prévision de cette fluctuation aux retombées mondiales sont des enjeux scientifiques majeurs. Cette thèse documente divers aspects d'ENSO tels que ses mécanismes, sa modulation et sa prévision. Ces divers aspects sont abordés en développant une hiérarchie de modèles du Pacifique équatorial, de complexité croissante, qui s'étend de modèles conceptuels à une méthode d'assimilation de données dans un modèle

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Das, Surajit. "Intraseasonal Variability in Aquaplanet Configuration of Community Atmosphere Model." Thesis, 2020. https://etd.iisc.ac.in/handle/2005/4625.

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The Intraseasonal Oscillation (ISO) plays an important role to modulate deep convective activity in the tropical region. In this thesis, I aim to understand the role of land and warm oceans in ISO, using a general circulation model. For this, I conduct a series of experiments in the Community Atmosphere Model (CAM) with various idealized and realistic surface boundary conditions to study tropical ISO. To investigate the influence of tropical sea surface temperature (SST) on ISO and convectively coupled equatorial waves in the global atmosphere, I conduct experiments with idealized, zonal

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Jiang, Xianan. "The boreal summer intraseasonal oscillation over the south Asian monsoon region." Thesis, 2004. http://proquest.umi.com/pqdweb?index=0&did=766011941&SrchMode=1&sid=5&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1233101729&clientId=23440.

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Lin, Xin. "Multiscale variability associated with the intraseasonal oscillation over the western Pacific warm pool." 1997. http://catalog.hathitrust.org/api/volumes/oclc/38743663.html.

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Schrage, Jon M. "Modulation of intraseasonal (25-70 day) processes by the superimposed ENSO cycle across the Pacific Basin." 1998. http://catalog.hathitrust.org/api/volumes/oclc/41553848.html.

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Venugopal, Thushara. "Sensitivity of Sea Surface Temperature Intraseasonal Oscillation to Diurnal Atmospheric Forcings in an OGCM." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3347.

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Abstract The diurnal cycle is a dominant mode of sea surface temperature (SST) variability in trop-ical oceans, that influences air-sea interaction and climate processes. Diurnal variability of SST generally ranges from ~0.1 to 2.0◦C and is controlled by atmospheric fluxes of heat and momentum. In the present study, the response of intraseasonal variability (ISV) of SST in the Bay of Bengal (BoB) to diurnal atmospheric forcings, during the summer monsoon of 2007, has been examined using an Ocean General Circulation Model (OGCM). The model is based on the Modular Ocean Model Version 4 (MOM4p0),

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Venugopal, Thushara. "Sensitivity of Sea Surface Temperature Intraseasonal Oscillation to Diurnal Atmospheric Forcings in an OGCM." Thesis, 2013. http://etd.iisc.ernet.in/2005/3347.

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Abstract The diurnal cycle is a dominant mode of sea surface temperature (SST) variability in trop-ical oceans, that influences air-sea interaction and climate processes. Diurnal variability of SST generally ranges from ~0.1 to 2.0◦C and is controlled by atmospheric fluxes of heat and momentum. In the present study, the response of intraseasonal variability (ISV) of SST in the Bay of Bengal (BoB) to diurnal atmospheric forcings, during the summer monsoon of 2007, has been examined using an Ocean General Circulation Model (OGCM). The model is based on the Modular Ocean Model Version 4 (MOM4p0),

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