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Doppler radar observations of an asymmetric MCS and associated vortex couplet

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dc.contributor.authorScott, James D., author
dc.date.accessioned2022-02-24T18:45:40Z
dc.date.available2022-02-24T18:45:40Z
dc.date.issued1994-10
dc.descriptionOctober 1994.
dc.descriptionAlso issued as author's thesis (M.S.) -- Colorado State University, 566.
dc.description.abstractA study of the 28 May 1985 "asymmetric" mesoscale convective system (MCS) observed during PRE-STORM (Preliminary Regional Experiment for Storm scale Operational and Research Meteorology) is presented. Radar documented the evolution of this MCS from a linear squall line, to asymmetric MCS with a trailing stratiform region, to an asymmetric MCS. Before the transition to the asymmetric stage, shallow, counter­rotating circulations were observed below the melting level in the trailing stratiform region of the system. With time, the anticyclonic circulation in the southern portion of the stratiform cloud began to weaken and migrate toward the convective line, while the northern, cyclonic circulation rapidly intensified, creating a asymmetric precipitation pattern. At maximum extent, the closed cyclonic circulation had horizontal dimensions of 80 km and a depth of 7 km. Retrieved horizontal pressure perturbations depict a pressure minimum in the center of the cyclonic circulation, suggesting the presence of quasi­balanced flow within the vortex. A strong and deep rear inflow jet was closely linked to the amplification and maintenance of the cyclonic vortex. A similar sequence of mesoscale flow evolution has been documented in recent modeling studies.
dc.description.sponsorshipSponsored by the National Science Foundation under grant ATM-9015485 and ATM-9321361.
dc.format.mediumreports
dc.identifier.urihttps://hdl.handle.net/10217/234407
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relationCatalog record number (MMS ID): 991023909929703361
dc.relationQC852 .C6 no. 566
dc.relation.ispartofAtmospheric Science Papers (Blue Books)
dc.relation.ispartofAtmospheric science paper, no. 566
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subject.lcshDoppler radar
dc.subject.lcshConvection (Meteorology)
dc.subject.lcshRadar meteorology
dc.titleDoppler radar observations of an asymmetric MCS and associated vortex couplet
dc.typeText
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