An Investigation of Interactions Between Double Clouds Using a Two-Dimensional Numerical Model.

Abstract

Cloud interactions are investigated using a two-dimensional numerical model based on the Boussinesq approximation to the equation of motion. Kessler's parameterization for auto-conversion and collision-coalescence processes is used. A humidity impulse is in the form of a half-cosine function which increases the relative humidity to a peak supersaturation of 0.1%. This starts the convection through the release of latent heat. In addition, the impulse establishes a horizontal virtual temperature gradient, which provides initial convergence. Three double-cloud cases are studied along with a single-cloud control case.

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1975
Accession Number
ADA006255

Entities

People

  • Paul R. Lowe
  • Wayne A. Sweet

Tags

DTIC Thesaurus Topics

  • Coalescence
  • Collisions
  • Convection
  • Convergence
  • Conversion
  • Equations
  • Heat Energy
  • Humidity
  • Isotherms
  • Latent Heat
  • Supersaturation
  • Temperature Gradients
  • Two Dimensional

Readers

  • Atmospheric Remote Sensing.
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Fluid Dynamics.