1-5b: Low Pressure Systems

And the four types of fronts they create

Quick FactsMeteorology

– The study of the atmosphere and weather

What is the main cause for any type of wind on Earth?– Uneven heating and Pressure Gradients

What causes Global Winds?– Global Convection Cells

Why do weather patterns move in predictable directions across the country?

– Prevailing Winds caused by Coriolis Effect

What is the name for a boundary between Air Masses?– Front

Fronts –Cold, Warm, Occluded and Stationary

Cyclogenesis: Formation of a Mid Latitude Low Weather pg. 90-95

Mid Latitude Low Pressure SystemsAn important weather pattern that occurs over and over again with

predictable and sometimes devastating effects to distribute atmospheric energy and moisture in a predictable pattern

Cyclogenesis: The formation of mid latitude low pressure systems

Shaped like a comma

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1-5b Notes Quiz Name: _____________________

• Meteorology is…

• Stationary Fronts are…

• Occluded Fronts are…

• Cyclogenesis is…

• Mid Latitude Lows are…

The Big Picture

Where are the four types of fronts on this map?Where is the Mid Latitude Low Pressure System on this map?

What we discussed today• Meteorology is…

– Study of the atmosphere and weather.

• Stationary Fronts are…– A boundary between a cold and warm air mass where neither front is advancing, but the

air masses may slide past one another.

• Occluded Fronts are…– A location at the center of a low pressure system where a warm air mass is squeezed

between an advancing cold front and preceding cooler air, and precipitation often occurs.

• Cyclogenesis is…– The formation of a Mid-Latitude Low Pressure system.

• Mid Latitude Lows are…– An important weather pattern consisting of a large rotating low pressure

centers with predictable effects that distributes atmospheric energy and moisture across large portions of our country.

The Big Picture

Where are the four types of fronts on this map?Where is the Mid Latitude Low Pressure System on this map?