Convective ascent

Air will rise from the surface by convection when bubbles of surface air are heated more than their surroundings as illustrated in the Figure below. Suitable conditions commonly occur when:

  • strong surface heating occurs during the day; or
  • a relatively cold air stream moves over a warmer surface.

Cumuliform clouds form if the surface air is moist enough and the rising air is cooled to saturation at the condensation level. The depth of convection is determined by the moisture content of the rising air and the temperature distribution of the environmental air.

error: Content is protected !!