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dc.contributor.advisorLodovica Illari.en_US
dc.contributor.authorMarino, Garrett Pen_US
dc.contributor.otherMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences.en_US
dc.date.accessioned2018-03-27T14:18:28Z
dc.date.available2018-03-27T14:18:28Z
dc.date.copyright2008en_US
dc.date.issued2008en_US
dc.identifier.urihttp://hdl.handle.net/1721.1/114345
dc.descriptionThesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2008.en_US
dc.descriptionCataloged from PDF version of thesis.en_US
dc.descriptionIncludes bibliographical references (pages 51-55).en_US
dc.description.abstractAtmospheric blocking disturbs synoptic-scale features from their normal eastward progression, causing extreme weather conditions for the duration of the blocking event. Blocking precursors, as indicators of meridional flow preceding the onset of strong Atlantic blocking episodes, have been identified by using a modified version of the Tibaldi and Molteni blocking index (1990). Hovmoller diagrams of the modified index were found to be particularly useful in finding the potential cases, clearly showing a precursor signal propagating from the western United States down to the Atlantic to initiate the blocking pattern. A composite of the 14 cases identified showed the precursor pattern to be consistent with the positive phase of the PNA, while the composite mature phase of Atlantic blocking resembles the negative NAO and AO phases. The results suggest that blocking is a global, rather than localized, phenomenon.en_US
dc.description.statementofresponsibilityby Garrett P. Marino.en_US
dc.format.extent56 pagesen_US
dc.language.isoengen_US
dc.publisherMassachusetts Institute of Technologyen_US
dc.rightsMIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission.en_US
dc.rights.urihttp://dspace.mit.edu/handle/1721.1/7582en_US
dc.subjectEarth, Atmospheric, and Planetary Sciences.en_US
dc.titlePrecursors to atmospheric blocking eventsen_US
dc.typeThesisen_US
dc.description.degreeS.B.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
dc.identifier.oclc1028750157en_US


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