ESS200A
Prof. Jin-Yi Yu
qWhen two fronts meet, the warm
air mass between them is displaced aloft resulting in an
occluded front.
qThis typically occurs when a cold
front closes on, and meets a warm front as it circulates about
the low pressure center of a mid-latitude cyclone.
qCold air now occupies the surface
completely around the low while warmer air is displaced
aloft.
Occluded Fronts
(from Weather & Climate)