THE INFLUENCE OF PROTECTIVE POUCHES ON THE DEVELOPMENT AND INTENSIFICATION OF HURRICANE ETA (2020)

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dc.contributor.advisorBoothe, Mark A.
dc.contributor.advisorMontgomery, Michael T.
dc.contributor.authorCorretjer, Nicohl M.
dc.contributor.departmentMeteorology (MR)
dc.date.accessioned2023-08-17T23:08:02Z
dc.date.available2023-08-17T23:08:02Z
dc.date.issued2023-06
dc.description.abstractThis thesis investigates the development of Hurricane Eta (2020) and its rapid intensification in the Western Caribbean during the late hurricane season. This study aims to show that the different stages of development of the system are supported by the marsupial paradigm. This paradigm requires, for tropical cyclogenesis, the existence of a protective pouch defined by a dividing streamline with a recirculating flow in a comoving frame of reference, which in the Atlantic is often associated with a westward-tracking African easterly wave. Global Model Analyses were examined in a comoving frame and indeed the precursor to Hurricane Eta was determined to have originated over Africa and then tracked westward over the Atlantic. Moreover, thorough examination of the model analyses allowed for a careful study of the interaction of multiple vortices within the pouch. Specifically, as the pouch crossed the central Atlantic, the separation distance between the two vortices within the pouch increased and then subsequently decreased as they merged and came into vertical alignment soon before formation as a tropical depression. The rapid intensification phase of Hurricane Eta immediately before landfall in Nicaragua is described also by examining moisture, relative vorticity, and vertical wind shear.en_US
dc.description.distributionstatementApproved for public release. Distribution is unlimited.en_US
dc.description.serviceFirst Lieutenant, United States Air Forceen_US
dc.identifier.curriculumcode372, Meteorology
dc.identifier.thesisid39065
dc.identifier.urihttps://hdl.handle.net/10945/72143
dc.publisherMonterey, CA; Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.authormarsupial paradigmen_US
dc.subject.authortropical cyclone formationen_US
dc.subject.authortropical cyclone intensificationen_US
dc.subject.author2020 Atlantic hurricane Seasonen_US
dc.subject.authorCaribbean Seaen_US
dc.subject.authorOkubo-Weiss parameteren_US
dc.subject.authorpouchen_US
dc.subject.authorhurricane Etaen_US
dc.titleTHE INFLUENCE OF PROTECTIVE POUCHES ON THE DEVELOPMENT AND INTENSIFICATION OF HURRICANE ETA (2020)en_US
dc.typeThesisen_US
dspace.entity.typePublication
etd.thesisdegree.disciplineMeteorologyen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.nameMaster of Science in Meteorologyen_US
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