dc.contributor.advisor Garcia, Odd Erik dc.contributor.author Sortland, Daniel Selnes dc.date.accessioned 2013-09-05T07:34:08Z dc.date.available 2013-09-05T07:34:08Z dc.date.issued 2013-07-16 dc.description.abstract This thesis present a self-consistent derivation of reduced fluid models for geophysical dynamics confined to the midlatitude region. The reduced model will be derived by use of a regular perturbation method, that gives the same result as the classical models, such as the barotropic and baroclinic quasi-gestrophic potential vorticity model. It will be shown that such a rigorous treatment self-consistently comprises otherwise classic assumptions known as, the Boussinesq approximation, shallow-water approximation, $\beta$-plane approximation (slab-approximation) and thin shell approximation. We use the understanding of these reduced models to generalize the baroclinic quasi-gestrophic potential vorticity model to include interaction with global scale. This will be done by using a multi-scale expansion, assosisert with the separation of spatio-temporal scales. en dc.identifier.uri https://hdl.handle.net/10037/5377 dc.identifier.urn URN:NBN:no-uit_munin_5074 dc.language.iso eng en dc.publisher Universitetet i Tromsø en dc.publisher University of Tromsø en dc.rights.accessRights openAccess dc.rights.holder Copyright 2013 The Author(s) dc.subject.courseID FYS-3900 en dc.subject VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430 en dc.subject VDP::Mathematics and natural science: 400::Physics: 430 en dc.title Reduced models for geophysical fluid dynamics en dc.type Master thesis en dc.type Mastergradsoppgave en
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