From 1979-2004, 32 storms originally tropical in nature (as classified by the National Hurricane Center) have affected Eastern Canada to various degrees during or after extratropical transition (ET). This study examines the dynamical structure of these 32 cases from quasi-geostrophic (QG) and potential vorticity (PV) perspectives, primarily utilizing the National Centers for Environmental Prediction (NCEP) North American Regional Reanalysis (NARR). A composite diagnosis is performed using the Sutcliffe/Trenberth (advection of mid-tropospheric vorticity by the thermal wind), the storms were partitioned into two groups, "intensifying" and "decaying", based upon the QG forcing for ascent. Composite synoptic structures, from both QG and potential vorticity (PV) views, will be presented for both partitioned groups of storms. In addition, precipitation distributions are analyzed using the 3-hour accumulated precipitation field in the NARK.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.97968 |
| Date | January 2006 |
| Creators | Milrad, Shawn M. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Department of Atmospheric and Oceanic Sciences.) |
| Rights | © Shawn M. Milrad, 2006 |
| Relation | alephsysno: 002492878, proquestno: AAIMR24742, Theses scanned by UMI/ProQuest. |
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