Divided Mesocyclone

March 14th, 2010

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  • I have recently been taking a closer look at a paper submitted back in 1979 (Lemon and Doswell), Severe Thunderstorm Evolution and Mesocyclone Structure as Related to Tornadogenesis. It is a fascinating read, especially with regard to the hypothesis of the divided mesocyclone structure.

    Some conclusions in this paper are consistent with those reached by Fujita, including the hypothesis that the strongest tornadoes actually occur during the collapse phase of the supercell, after dissipation of BWER and decrease in updraft intensity.

    I wanted to see if there had been any follow-up study with regard to this paper, and if there was any new evidence to support or disprove the idea of the formation of a divided mesocyclone structure prior to tornadogenesis.

    If anyone could shed some light on this, I would really appreciate it.


    John


  • PDF of the article here (http://ams.allenpress.com/archive/1520-0493/107/9/pdf/i1520-0493-107-9-1184.pdf) if anyone wishes to read it.







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