🔍 Key Concepts

• Occluded front structure and how it forms when a cold front overtakes a warm front • Difference between warm-type occlusion and cold-type occlusion • How the air mass being lifted off the ground affects surface temperature

💭 Think About

• Think about what happens to the warm air at the surface when an occlusion forms. Is it still in contact with the ground, or is it lifted? • Consider how a warm-type occlusion versus a cold-type occlusion changes which air mass ends up at the surface. • Ask yourself: in an occluded front, is the temperature change at the surface always the same, or does it depend on the relative temperatures of the air masses involved?

✅ Before You Answer

• Verify that in an occluded front, the warm sector air is lifted aloft and no longer at the surface. • Check whether the type of occlusion (warm vs cold) determines whether colder or less-cold air ends up at the surface. • Confirm if exam questions on occluded fronts usually want a general rule or if they expect you to distinguish between warm and cold type occlusions.