MacDonald, Alexander Forsyth, 1897-1965 · Port Credit, Ont. : Aviation Service Corporation · leaf 57
Fig. 19. Vertical Section through a Warm Front. The Cold Front When a mass of cold air overtakes a mass of warmair, the cold air imdercuts the warm air violently. Therapid ascent of the warm air gives rise to Cumulonim-bus cloud with a short period of squally, showery rain,sometimes very heavy and… … Fig. 18. Development of a Depreision, shouting Isobars. Fig. 20. Vertical Section through a Cold Front. Occluded Fronts With the progress of time, as a Depression ad-vances, the Cold Front gradually overtakes the WarmFront and lifts the Warm Sector entirely from thegroimd. It is simply a case of…
Airplanes
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