NOTE: This item is not available outside the Texas A&M University network. Texas A&M affiliated users who are off campus can access the item through NetID and password authentication or by using TAMU VPN. Non-affiliated individuals should request a copy through their local library's interlibrary loan service.
Barotropic mechanisms associated with tropical plume formation
dc.contributor.advisor | McGuirk, James P. | |
dc.creator | Askue, Cecilia Ann | |
dc.date.accessioned | 2020-09-02T20:04:04Z | |
dc.date.available | 2020-09-02T20:04:04Z | |
dc.date.issued | 1989 | |
dc.identifier.uri | https://hdl.handle.net/1969.1/DISSERTATIONS-1109022 | |
dc.description | Typescript (photocopy). | en |
dc.description.abstract | The tropical plume is an upper level phenomenon with greatest frequency of occurrence over the northeast Pacific. Primarily wintertime events, plumes transport energy poleward and may be transient systems comprising a Hadley circulation. Previous studies of tropical plumes have focused on plume development and on describing plume structure and statistical properties. This study investigates possible mechanisms involved in plume initiation. From a case study, barotropic mechanisms are hypothesized to be important in initiating tropical plumes. These mechanisms are investigated by means of a one-layer, barotropic, gridpoint model using the shallow water equations on an equatorial β-plane. Particular attention is given to wave-wave interaction occurring between equatorially trapped normal modes and between these modes and perturbations from higher latitudes. The numerical results indicate that interaction among equatorially trapped Rossby modes shows promise as being a key element in plume initiation. The effects are particularly apparent when the Rossby wave state is perturbed by a disturbance resembling an upper level cyclonic circulation, such as frequently occurs when a midlatitude trough intrudes into the tropics. The effects of a Kelvin-wave-like basic state are limited: active responses are observed only in the westerly regime of the Kelvin wave but do not interact strongly with the Kelvin wave itself. | en |
dc.format.extent | xiii, 188 leaves | en |
dc.format.medium | electronic | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | |
dc.rights | This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. | en |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | |
dc.subject | Major meteorology | en |
dc.subject.classification | 1989 Dissertation A835 | |
dc.subject.lcsh | Atmospheric circulation | en |
dc.subject.lcsh | Atmospheric waves | en |
dc.subject.lcsh | Dynamic meteorology | en |
dc.title | Barotropic mechanisms associated with tropical plume formation | en |
dc.type | Thesis | en |
thesis.degree.grantor | Texas A&M University | en |
thesis.degree.name | Doctor of Philosophy | en |
thesis.degree.name | Ph. D | en |
dc.contributor.committeeMember | Brundidge, Kenneth C. | |
dc.contributor.committeeMember | Diaz, Ricardo L. | |
dc.contributor.committeeMember | Klinck, John M. | |
dc.contributor.committeeMember | Lyons, Steven W. | |
dc.type.genre | dissertations | en |
dc.type.material | text | en |
dc.format.digitalOrigin | reformatted digital | en |
dc.publisher.digital | Texas A&M University. Libraries | |
dc.identifier.oclc | 22842581 |
Files in this item
This item appears in the following Collection(s)
-
Digitized Theses and Dissertations (1922–2004)
Texas A&M University Theses and Dissertations (1922–2004)
Request Open Access
This item and its contents are restricted. If this is your thesis or dissertation, you can make it open-access. This will allow all visitors to view the contents of the thesis.