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dc.contributor.advisorLupo, Anthony R., 1966-eng
dc.contributor.authorGlisan, Justin Michaeleng
dc.date.issued2007eng
dc.date.submitted2007 Falleng
dc.descriptionThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.eng
dc.descriptionTitle from title screen of research.pdf file (viewed on March 26, 2008)eng
dc.descriptionIncludes bibliographical references.eng
dc.descriptionThesis (M.S.) University of Missouri-Columbia 2007.eng
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Soil and atmospheric sciences.eng
dc.description.abstractAtmospheric blocking is simply the inhibition, on the synoptic and planetary scale, of the normal mid-latitude progression of migratory cyclones and anticyclones. While the block itself is readily observable as a 500-hPa positive geopotential height anomaly, the dynamical onset of the blocking flow is still not understood. It has been shown through various studies that prolonged or episodic atmospheric blocking can impact the climatological character of the region in which they occur for one to two seasons following the event. Seasonal modifications imposed on a given region by blocking anticyclones not only deprive the area of the typical temperature and precipitation regimes, but also produce climatological extremes that can malignantly affect the land and populations residing in specific areas. In this study, two cases of extreme blocking are analyzed using NCEP-NCAR gridded reanalyses. The first case is the 2003 European heat wave. This event was confined to Western Europe, where the ensuing heat wave produced a death toll on the range of 40,000 over the summer season. The most severe period occurred from 06 - 13 August 2003. The second case is analogous to the 2003 European heat wave in scale and magnitude. The 2004 Gulf of Alaska event, "Baked Alaska", prompted abnormally high temperatures and less-than-normal precipitation (over the period of June through August) that led to anomalous melting over the summer season. It should be noted that the Gulf of Alaska event was not merely one episode, but two distinct events. As with events such as those above, the greatest problem affecting the study of blocking flows is the degree to which this phenomenon can be forecasted numerically. In this investigation, a mathematical entity, known as a Lyapunov exponent is utilized in an effort to determine the fluid stability of the atmosphere within a blocking flow. A better understanding of stability may yield an increase in the forecast lead-time as well as a greater understanding of blocking itself. While Lyapunov exponent analysis delves into the characteristics of flow stability, a more powerful tool emerges in that these exponents can examine the local predictability of the flow itself.eng
dc.identifier.merlinb62994505eng
dc.identifier.oclc214100461eng
dc.identifier.urihttps://hdl.handle.net/10355/5094
dc.identifier.urihttps://doi.org/10.32469/10355/5094eng
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcollection2007 Freely available theses (MU)eng
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2007 Theseseng
dc.subject.lcshBlocking (Meteorology)eng
dc.subject.lcshAtmospheric circulationeng
dc.subject.lcshGlobal warmingeng
dc.titleTwo extreme cases of atmospheric blocking over Europe and North Americaeng
dc.typeThesiseng
thesis.degree.disciplineSoil, environmental and atmospheric sciences (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.S.eng


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