Intensification and structure change of super Typhoon Flo as related to the large-scale environment

Simple item page
dc.contributor.advisorElsberry, Russell L.
dc.contributor.authorTitley, David W.
dc.contributor.corporateNaval Postgraduate School
dc.contributor.departmentDepartment of Meteorology
dc.dateJune 1998
dc.date.accessioned2012-08-09T19:21:28Z
dc.date.available2012-08-09T19:21:28Z
dc.date.issued1998-06-01
dc.description.abstractA Multi-Quadric (MQ) analysis is developed and compared with the four-dimensional data assimilation analyses of the structure of Typhoons Flo and Ed during the Tropical Cyclone Motion (TCM-90) field experiment. The MQ analysis has been shown to provide an alternate, plausible depiction of the tropical atmosphere. These analyses are used to compare physical processes leading to rapid intensification of Flo, but not of Ed. Significant documentations include: (1) the existence of a cyclonic wind burst extending beyond 1000 km radius at 200 mb during the forcing phase for Typhoon Flo, which appears to be the result of strong, sustained eddy flux convergence of angular momentum (EFC) in the upper troposphere; (2) a complex EFC vertical structure that evolved with time; (3) Flo had developed a warmer core near the tropopause, and was less stable than Ed in the upper troposphere prior to the beginning of the rapid intensification period; (4) a high correlation of the mid-troposphere azimuthally-averaged absolute vorticity with the 48-h future intensity of four tropical cyclones; and (5) the 850 - 200 mb vertical wind shear for Typhoon Ed was less than the vertical shear calculated for Typhoon Flo, which implies that low vertical shear, although necessary for significant storm development is not, by itself, a sufficient dynamic factor to ensure rapid intensification. A conceptual model is proposed for tropical cyclone rapid intensification and subsequent weakening that accounts for varying EFC and vertical shear values. Although based on Typhoon Ed and Flo, this model is also consistent with intensity changes of Typhoons Yancy and Zola.en_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.
dc.description.serviceLieutenant Commander United States Navyen_US
dc.description.urihttp://archive.org/details/intensificationn109458546
dc.format.extentxx, 368 p..en_US
dc.identifier.urihttps://hdl.handle.net/10945/8546
dc.language.isoen_US
dc.publisherMonterey, California. 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.authorTropical cyclone intensificationen_US
dc.subject.authorObjective analysis methoden_US
dc.subject.authorMulti-quadric analysisen_US
dc.titleIntensification and structure change of super Typhoon Flo as related to the large-scale environmenten_US
dc.typeThesisen_US
dspace.entity.typePublication
etd.thesisdegree.disciplineMeteorologyen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.thesisdegree.levelDoctoralen_US
etd.thesisdegree.namePh.D. in Meteorologyen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
intensifications00titl.pdf
Size:
16.21 MB
Format:
Adobe Portable Document Format
Download
Collections
Theses