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Which development principle relates surface pressure change to thermal advection?

  • A.The Charney-Drazin criterion
  • B.The Eady model, which describes the growth of baroclinic waves in a uniformly sheared basic state
  • C.The Sutcliffe development theory
  • D.The Margules relation, which gives the slope of a frontal surface from the wind change across it

Answer: C

Sutcliffe expressed surface development in terms of the thermal advection and the thermal vorticity advection, giving forecasters a practical rule based on the thickness field. It was the working method of British forecasting for decades before numerical models. Margules concerns frontal slope, Charney-Drazin wave propagation into the stratosphere, and Eady the idealised theory of baroclinic growth.

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