Horizontal Convective Rolls: Determining the Environmental Conditions Supporting their Existence and Characteristics

  title={Horizontal Convective Rolls: Determining the Environmental Conditions Supporting their Existence and Characteristics},
  author={Tammy M. Weckwerth and James W. Wilson and Roger M. Wakimoto and Norman A. Crook},
  journal={Monthly Weather Review},
Abstract Data from the Convection and Precipitation/Electrification (CaPE) project, as well as results from numerical simulations, are used to study horizontal convective rolls. The environmental conditions necessary for sustaining rolls and for influencing the aspect ratio, ratio of roll wavelength to convective boundary layer (CBL) depth, and orientation are examined. Observations and numerical model simulations both suggest that a moderate surface sensible heat flux and some vertical wind… Expand
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