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Dissertations / Theses on the topic 'Synoptic models'

Author: Grafiati

Published: 15 February 2025

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1

Spellman, Greg. "An evaluation of statistical synoptic models of rainfall in Spain." Thesis, University of Northampton, 2003. http://nectar.northampton.ac.uk/2997/.

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This study investigates the control of atmospheric circulation patterns on rainfall incidence in Spain. The main objective of the research is to evaluate a range of statistical synoptic approaches with the aim of identifying the scheme that best models circulation to association. Spatial patterns of rainfall in Spain are first investigated using Principal Components Analysis and Cluster Analysis. Distinct precipitation affinity groups emerge that display covariant rainfall behaviour and reflect differences in latitude, the influence of topography and distance from the synoptic feature responsi

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2

Jean, Michel 1959 Sept 29. "Synoptic and diagnostic analyses of CASP storm #14." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63998.

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3

Bellone, Enrica. "Nonhomogeneous hidden Markov models for downscaling synoptic atmospheric patterns to precipitation amounts /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/8979.

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4

Serra, Yolande L., and Kerrie Geil. "Historical and Projected Eastern Pacific and Intra-Americas Sea TD-Wave Activity in a Selection of IPCC AR5 Models." AMER METEOROLOGICAL SOC, 2017. http://hdl.handle.net/10150/624034.

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The tracks of westward-propagating synoptic disturbances across the Intra-Americas Sea (IAS) and far-eastern Pacific, known as easterly waves or tropical depression (TD) waves, are an important feature of the region's climate. They are associated with heavy rainfall events, seed the majority of tropical cyclones, and contribute to the mean rainfall across the region. This study examines the ability of current climate models (CMIP5) to simulate TD-wave activity and associated environmental factors across the IAS and far-eastern Pacific as compared to reanalysis. Model projections for the future

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5

Malhomme, Nemo. "Statistical learning for climate models." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPAST165.

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Les modèles climatiques peinent à représenter précisément les structures de circulation atmosphérique liées aux événements extrêmes, et notamment leurs variations régionales.Cette thèse explore comment l'Allocation Latente de Dirichlet (LDA), une méthode d'apprentissage statistique issue du traitement du langage naturel, peut être utilisée pour évaluer la représentation par modèles climatiques de données telles que la pression au niveau de la mer (SLP).La LDA identifie un jeu de structures locales (ou motifs) à l'échelle synoptique, interprétables physiquement comme des cyclones et des anticyc

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6

Du, Preez Chrisna Barbara. "A mesoscale investigation of the sea breeze in the Stellenbosch winegrowing district." Diss., Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-02092007-093317.

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7

Campos, Antonio Marcos Vianna. "Modelos conceituais de formação da corrente de jato no nordeste brasileiro." Universidade Federal de Alagoas, 2010. http://repositorio.ufal.br/handle/riufal/886.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>O objetivo principal deste trabalho baseou-se na elaboração e estudo das freqüências de distribuições espaciais das Correntes de Jato próximo do Nordeste Brasileiro (CJNEB) e sistemas sinóticos associados. Esta pesquisa foi realizada devido à necessidade de um maior conhecimento sobre a influência desse sistema na região e a pouca quantidade de artigos relacionados a este tipo de pesquisa. O período escolhido contou com 16 anos de análises entre os anos de 1994 e 2009. Foram utilizados os dados de reanálise do National Centers fo

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8

Ebisuzaki, Wesley Nobuo. "Interactions between long and synoptic-scale waves in a simple model." Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/53524.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1987.<br>Microfiche copy available in Archives and Science.<br>Bibliography: leaves 197-204.<br>by Wesley Nobuo Ebisuzaki.<br>Ph.D.

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9

Lukancic, Khara Diane. "SENSITIVITY OF STRONG EXTRATROPICAL CYCLONES TO LARGE-SCALE CLIMATE VARIABILITY IN THE CONTIGUOUS UNITED STATES." OpenSIUC, 2016. https://opensiuc.lib.siu.edu/theses/2043.

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Extratropical cyclones are responsible for a substantial portion of midlatitude climate variability and contribute to widespread impacts. The characteristics of extratropical cyclones, such as their spatial distribution and intensity, are thought to be dependent on the large scale circulation. The relationship between cyclone characteristics and modes of large-scale climate variability has been investigated in previous studies, but interactions between modes of climate variability have largely been ignored. Since extratropical cyclone characteristics may be related to interactions between phas

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10

Leishman, Natalie. "Model Sensitivity, Performance and Evaluation Techniques for The Air Pollution Model in Southeast Queensland." Thesis, Queensland University of Technology, 2005. https://eprints.qut.edu.au/16148/1/Natalie_Leishman.pdf.

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One important component for successful air quality modelling is the utilisation of a reliable meteorological simulator. Evaluating the model with respect to its overall performance in predicting natural processes is no easy task. The problem is twofold, firstly there is the availability and suitability of field data with which to compare a model with and secondly there is the method of evaluation. The Air Pollution Model (TAPM), developed by the CSIRO was used to simulate the winds in Southeast Queensland (SEQ). The complex nature of the airshed makes it difficult to compare modelled data wi

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11

Leishman, Natalie. "Model Sensitivity, Performance and Evaluation Techniques for The Air Pollution Model in Southeast Queensland." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16148/.

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One important component for successful air quality modelling is the utilisation of a reliable meteorological simulator. Evaluating the model with respect to its overall performance in predicting natural processes is no easy task. The problem is twofold, firstly there is the availability and suitability of field data with which to compare a model with and secondly there is the method of evaluation. The Air Pollution Model (TAPM), developed by the CSIRO was used to simulate the winds in Southeast Queensland (SEQ). The complex nature of the airshed makes it difficult to compare modelled data wi

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12

Carpenter, McLean Kent. "West Antarctic Surface Mass Balance: Do Synoptic Scale Modes of Climate Contribute to Observed Variability?" BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4382.

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Western Antarctica has been experiencing significant warming for at least the past fifty years. While higher Net Surface Mass Balance (SMB) over West Antarctica during this period of warming is expected, SMB reconstructions from ice cores reveal a more complex pattern during the period of warming. The mechanisms giving rise to SMB variability over the West Antarctic Ice Sheet (WAIS) are not well understood due to lack of instrumental data. The Southern Annular Mode (SAM) and El Niño Southern Oscillation (ENSO) are believed to contribute to WAIS SMB variability but the assumption has not been r

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13

Wilson, Monica. "Synoptic to interannual variability in volumetric flushing in Tampa Bay, FL using observational data and a numerical model." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4963.

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This research provides insight into changes in volumetric flushing of the Tampa Bay estuary caused by synoptic scale wind events. The two main studies of this dissertation involve 1) using wavelet analysis to investigate the link between the El Niño-Southern Oscillation (ENSO) and the frequency and strength of volumetric flushing driven by synoptic variability and 2) using a multi-decadal model simulation to examine how extratropical/winter storms and hurricanes affect the overall flushing rates for Tampa Bay, FL. In the first study, two analyses are performed on 55 years of observational dat

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14

Splawinski, Sophie. "An assessment of freezing rain processes in the Saint- Lawrence River Valley: synoptic-dynamic analysis and operational model verification." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121459.

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Freezing rain (FZRA), a hazardous meteorological phenomenon, poses a significant threat to the general public and can severely damage societal infrastructure. The phenomenon is well known throughout the St-Lawrence River Valley (SLRV), which is known to have one of the highest frequencies of FZRA in the world owing to its orography and spatial orientation. Our focus is to provide meteorologists with the means to better predict both the onset and duration of FZRA at Montreal (CYUL), Quebec City (CYQB), and Massena (KMSS) in a two-stage process: by introducing a new 2-dimensional elliptic regres

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15

Anderson, John W. "An analysis of a dust storm impacting Operation Iraqi Freedom, 25-27 March 2003." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FAnderson.pdf.

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16

Salehjee, Saima Qasim. "Making scientists : developing a model of science identity." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/14670.

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This study is an analysis of a three-phase study with twelve professional scientists and non-scientists (Phase One), one-hundred and twenty-three science and non-science university students (Phase Two) and thirty secondary school girls (Phase Three), to illustrate their ‘science lives’. I have used identity theories and transformational learning theory (TLT) to illustrate transformation or movement of learners towards, or away from, science. The understanding of these models and theories have led me to design a theoretical model of science identity (Sci-ID) that represents the global forces (G

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17

Dean, John Robert. "Improving Summer Drought Prediction in the Apalachicola-Chattahoochee- Flint River Basin with Empirical Downscaling." Digital Archive @ GSU, 2008. http://digitalarchive.gsu.edu/geosciences_theses/12.

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The Georgia General Assembly, like many states, has enacted pre-defined, comprehensive, drought-mitigation apparatus, but they need rainfall outlooks. Global circulation models (GCMs) provide rainfall outlooks, but they are too spatially course for jurisdictional impact assessment. To wed these efforts, spatially averaged, time-smoothed, daily precipitation observations from the National Weather Service cooperative network are fitted to eight points of 700 mbar atmospheric data from the NCEP/NCAR Reanalysis Project for climate downscaling and drought prediction in the Apalachicola-Chattahooche

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18

Burgin, Laura Elizabeth. "The impacts of weather and climate change on the spread of bluetongue into the United Kingdom." Thesis, University of Exeter, 2011. http://hdl.handle.net/10036/3208.

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A large epizootic of the vector-borne disease bluetongue occurred in northern Europe from 2006-2009, costing the economies of the infected countries several hundreds of millions of euros. During this time, the United Kingdom (UK) was exposed to the risk of bluetongue by windborne incursions of infected Culicoides biting midges from the northern coast of mainland Europe. The first outbreaks which occurred in the UK in 2007 were attributed to this cause. Although bluetongue virus (BTV) no longer appears to be circulating in northern Europe, it is widely suggested that it and other midge-borne di

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19

Walther, Connie Verfasser], Christian [Akademischer Betreuer] Bernhofer, Martin [Akademischer Betreuer] Horwath, and Johannes [Akademischer Betreuer] [Quaas. "Atmospheric Circulation in Antarctica : Analysis of Synoptic Structures via Measurement and Regional Climate Model / Connie Walther. Betreuer: Christian Bernhofer. Gutachter: Martin Horwath ; Johannes Quaas." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://d-nb.info/109539536X/34.

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20

Cuviello, Matthew P. Konrad Charles Edward. "A model for refining precipitation-type forecasts for winter weather in the Piedmont region of North Carolina on the basis of partial thickness and synoptic weather patterns." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2007. http://dc.lib.unc.edu/u?/etd,932.

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Thesis (M.A.)--University of North Carolina at Chapel Hill, 2007.<br>Title from electronic title page (viewed Dec. 18, 2007). "... in partial fulfillment of the requirements for the degree of Masters in the Department of Geography (Climatology)." Discipline: Geography; Department/School: Geography.

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21

Bari, Driss. "Etude du brouillard en zone côtière par modélisation des processus physiques de la couche limite atmosphérique : cas du Grand Casablanca (Maroc)." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30316/document.

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Le brouillard est un phénomène météorologique très difficile à prévoir, même à très courte échéance, en raison de sa grande variabilité spatiale et temporelle qui est due à des interactions complexes entre divers processus physiques. Dans cette thèse, les caractéristiques météorologiques locales et les processus synoptiques favorables aux brouillards sur la région du Grand Casablanca (Maroc) sont examinés à l'aide des observations horaires aux deux stations météorologiques permanentes de cette région côtière. Un algorithme de classification objectif est développé et utilisé pour classer les év

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22

Treguier, Anne-Marie. "Effets des vents fluctuants et de la topographie sur la turbulence océanique à moyenne échelle." Brest, 1987. http://www.theses.fr/1987BRES2003.

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Les fluctuations du vent sont un des mecanismes pouvant generer la variabilite oceanique d'echelle moyenne, observee notamment dans l'atlantiuqe nord-est. La reponse de l'ocean est calculee par un modele numerique spectral, qui resout les equations quasi-geostrophiques dans le cas non lineaire et stratifie. Dans une premiere partie, nous decrivons la turbulence d'echelle moyenne generee par les fluctuations du vent dans un ocean a fond plat. L'energie de la reponse se partage entre un regime lineaire constitue d'ondes de rossby barotropes a grande echelle, et un regime non lineaire. Nous etudi

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23

Žák, Michal. "Synoptic Interpretation of Numerical Prognostic Models Outputs." Doctoral thesis, 2006. http://www.nusl.cz/ntk/nusl-267504.

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24

Kavulich, Michael J. Jr. "Local Dynamics of Synoptic Waves in the Martian Atmosphere." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-08-10149.

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The sources and sinks of energy for transient waves in the Martian atmosphere are investigated, applying diagnostic techniques developed for the analysis of terrestrial baroclinic waves to output from a Mars General Circulation Model. These diagnostic techniques include the vertically averaged eddy kinetic energy and regression analysis. The results suggest that the primary source of the kinetic energy of the waves is baroclinic energy conversion in localized regions. It is also shown that there exist preferred regions of baroclinic energy conversion. In addition, it is shown that downstream

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25

Sobie, Stephen Randall. "Climate model downscaling of Vancouver Island precipitation using a synoptic typing approach." Thesis, 2010. http://hdl.handle.net/1828/3083.

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A statistical downscaling technique is employed to link atmospheric circulation produced by climate models at the large-scale to precipitation recorded at individual weather stations on Vancouver Island. Relationships between the different spatial scales are established with synoptic typing, coupled with non-homogeneous Markov models to simulate precipitation intensity and occurrence in historical and future periods. Types are generated through a clustering algorithm which processes daily precipitation observations recorded by Environment Canada weather stations spanning 1971 to 2000. Large-sc

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26

Walther, Connie. "Atmospheric Circulation in Antarctica: Analysis of Synoptic Structures via Measurement and Regional Climate Model." Doctoral thesis, 2015. https://tud.qucosa.de/id/qucosa%3A29285.

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Validation of the Regional Climate Model HIRHAM with measurements, especially from radiosondes and GPS-signal-retrieval. Analysis of synoptical structures in Antarctica and comparison of the precipitation in different phases of the Antarctic Oscillation.

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27

Hsieh, Ying-Hsun, and 謝瑩薰. "Using potential vorticity of two layer model to explore the characteristics of winter midlatitude synoptic-scale system." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/3uz7k9.

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碩士<br>國立中央大學<br>大氣物理研究所<br>94<br>The potential vorticity (PV) on each isentropic surface and potential temperature at the lower boundary play important roles in dynamic process of midlatitude synoptic-scale systems. But single isobaric surface or isentropic surface can not represent both PV and potential temperature at the same time. We need understand the dynamic process by combining variant isobaric or isentropic surfaces when exploring the synoptic-scale system. In this paper, we use 310K isentropic surface as the interface to simplify the atmosphere into a two layer system. The main purpos

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28

Eerkes-Medrano, Laura. "Slush-ice berms on the west coast of Alaska: development of a conceptual model of formation based on input from and work with local observers in Shaktoolik, Gambell and Shishmaref, Alaska." Thesis, 2017. http://hdl.handle.net/1828/7744.

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Bering Sea storms regularly bring adverse environmental conditions, including large waves and storm surges of up to 4 m, to the west coast of Alaska. These conditions can cause flooding, erosion and other damage that affects marine subsistence activities and infrastructure in the low-lying coastal communities. Storm impacts also include interactions with sea ice in various states: large floes, shore-fast ice, the acceleration of sea-ice formation in frazil or slush state, and the formation of slush-ice berms. Slush-ice berms are accumulations of slush ice that develop under the right wind, wat

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29

Soderi, Mirco. "Semantic models for the modeling and management of big data in a smart city environment." Doctoral thesis, 2021. http://hdl.handle.net/2158/1232245.

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The overall purpose of this research has been the building or the improve- ment of semantic models for the representation of data related to smart cities and smart industries, in such a way that it could also be possible to build context-rich, user-oriented, ecient and eective applications based on such data. In some more detail, one of the key purposes has been the modelling of structural and the functioning aspects of the urban mobility and the produc- tion of instances exploiting the Open Street Map, that once integrated with trac sensors data, it has lead to the building and display

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