Cyclone Formation and Characteristics

This lecture covers the various types of cyclones, including extra-tropical, tropical, subtropical, and polar cyclones. It explains the concept of bomb cyclones and their rapid pressure changes. The lecture also delves into the life cycle of a typical cyclone using the Norwegian cyclone model, highlighting the stages from formation to occlusion. The discussion emphasizes the imbalance between warm and cold air masses and how cyclones attempt to resolve this imbalance.

What is another name for an extra-tropical cyclone?

• Polar cyclone

• Baroclinic cyclone

• Barrow cyclone

• Tropical cyclone

Which type of cyclone is closely related to hurricanes?

• Extra-tropical cyclone

• Subtropical cyclone

• Polar cyclone

• Tropical cyclone

What defines a bomb cyclone?

• A cyclone that forms in tropical regions

• A cyclone with a central pressure drop of at least 24 millibars in 24 hours

• A cyclone with a central pressure rise of at least 6 millibars in 24 hours

• A cyclone that forms in polar regions

What is the primary cause of cyclone formation according to the Norwegian cyclone model?

• Ocean currents

• Wind speed differences

• Temperature imbalances between tropical and polar regions

• Humidity levels

In which direction do cyclones typically rotate in the Northern Hemisphere?

• Vertically

• Horizontally

• Clockwise

• Counterclockwise

What forms immediately east of a cyclone during its infancy?

• Cold front

• Warm front

• Stationary front

• Occluded front

During which stage is a cyclone at its peak intensity?

• Dissipating stage

• Occluding stage

• Maturing stage

• Infancy stage

What happens when the cold front overtakes the warm front in a cyclone?

• Formation of a new cyclone

• Formation of an occluded front

• Cyclone intensifies

• Cyclone dissipates

What is the result of a cyclone's supply of warm moist air being cut off?

• Cyclone weakens

• Cyclone changes direction

• Cyclone remains stable

• Cyclone intensifies

What is the color used to represent an occluded front in meteorological diagrams?

• Red

• Blue

• Purple

• Green