The Structure and Intensity of Winter Mesoscale Lake -Effect Circulations Associated With an Isolated Lake
Laird, Neil Francis
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https://hdl.handle.net/2142/85956
Description
Title
The Structure and Intensity of Winter Mesoscale Lake -Effect Circulations Associated With an Isolated Lake
Author(s)
Laird, Neil Francis
Issue Date
2001
Doctoral Committee Chair(s)
David Kristovich
Department of Study
Atmospheric Sciences
Discipline
Atmospheric Sciences
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Geophysics
Language
eng
Abstract
To understand and predict the strength of mesoscale lake-effect circulations a simple function, called the lake-effect intensity index, was developed using the dimensional analysis technique. The intensity index was found to be equivalent to scaling the Froude number by a dimensionless quantity comprised of lake-air temperature difference, fetch distance, air temperature, and boundary layer height to improve its predictive capability. The intensity index: (1) accounts for the relative contributions of variables fundamental to the lake-effect system, (2) effectively predicts the strength of lake-effect circulations from first order fundamental variables that are easily measured, and (3) can be used regardless of the lake-effect morphological regime.
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