cyclogenesis in the lee of the atlas mountains: a factor separation numerical study

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ID: 192592
2006
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Abstract
The initiation of a deep and severe impact Mediterranean cyclone in the lee of Atlas Mountains is investigated by a series of numerical experiments using the MM5 forecast model. Roles of orography, surface sensible heat flux and an upper-level potential vorticity anomaly are identified using factor separation method. Results of model simulations show that orography blocking is responsible for generation of the low-level shallow vortex in the first phase of lee development. Upper-level potential vorticity is a principal ingredient of this event, responsible for a dominant deepening effect in the later stage of lee formation. Analysis of cyclone paths shows that orography tends to keep the cyclone stationary, while upper-level dynamical factors are crucial for advection of the system to the Mediterranean Sea. The most noteworthy influence of surface sensible heat flux is identified as an afternoon destruction of a surface baroclinic zone and associated weaker cyclogenesis.
Reference Key
horvath2006advancescyclogenesis Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;K. Horvath;L. Fita;R. Romero;B. Ivancan-Picek;I. Stiperski
Journal journal of the medical library association
Year 2006
DOI
DOI not found
URL
http://www.adv-geosci.net/7/327/2006/adgeo-7-327-2006.pdf
Keywords
sciencegeologydynamic and structural geology

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