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The Earth's Electrical Environment (1986) / Chapter Skim
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Pages 54-55

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From page 54...
... Another totally different process produces attenuation by changing the thermodynamic parameters associated with the acoustic wave over the surfaces of cloud particles; this changes the local vapor-to-liquid or vapor-tosolid conversion rates. For example, during the compressional part of the wave the air temperature is increased and the relative humidity is decreased relative to equilibrium; the droplets partially evaporate in response and withdraw some energy from the wave to accomplish it.
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From page 55...
... ACOUS TIC RADIA TIONS FROM LIGHTNING found that turbulence on the scale of the acoustic wavelength and smaller could be treated with scattering theory. Turbulence larger than acoustic wavelengths, up to and including storm-scale motions, should be describable by geometric acoustics or ray theory.
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Key Terms

  • cloud particles
  • thunder signal


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