Pressure Systems Flashcards
What is the ITCZ?
Bands of low pressure.
What type of pressure happens at a convergence?
Low pressure.
What pressure do we get at divergence?
High pressure.
What pressure is at the equator?
Low.
If there is high pressure above the UK in january, what woukd it be called?
Cold core high.
Low pressure circulates blank in the southern hemisphere.
Clockwise.
Low pressure circulates blank in the northern hemisphere.
Anticlockwise.
What is caused in a depression at high levels?
High level divergence.
A typical front (warm and cold front)
occur when a polar blank pushes
polar (cold) and blank (warm) air into each other.
Depressions tropical
What is a secondary depression?
Low pressure that rotates around a main depression.
What is an isobaric trough?
Trough that extends into other systems.
What is a trough line?
Strong band of low pressure.
What type of core low is seen in a tropical depression?
Warm core low.
Where can thermal lows occur?
Over warm seas or lakes.
What does orographic mean?
Air moving around terrain
What happens to pressure on an orographic windward side?
High.
What happens to pressure on an orographic windward side?
High.
What happens to pressure on an orographic lee side?
Low.
Anticyclones are formed due to high level blank.
Convergence.
Blank blank occurs in the subsiding air, which generally results in skies becoming cloud free.
Adiabatic warming.
In a cold cyclone the pressures bulge. What way do they bulge at lower levels?
Up.
In a cold cyclone the pressures bulge. What way do they bulge at higher levels?
Down.
What type of anticyclone sees pressure levels bulge up?
Warm.
What is a blocking anticyclone?
Intense high pressure.
What does a blocking anticyclone result in?
Consistent weather.
What occurs between polar front depressions?
Cold temporary antic cyclones.
What weather does a cold temporary anticyclone bring?
Clear skies or light winds.
What does a col bring in the winter?
Fog
What is the middle air cell?
Ferrel.
Given the identical pressure gradient and density at latitudes 60°S, 50°S, and 40°S, determine where, if any, the geostrophic wind speed is highest…
40
Given the identical pressure gradient and density at latitudes 60°S, 50°S, and 40°S, determine where, if any, the geostrophic wind speed is highest…
40
Given the identical pressure gradient and density at latitudes 60°S, 50°S, and 40°S, determine where, if any, the geostrophic wind speed is highest…
40
What does a frictional force together with cyclonic curvature of the isobars cause?
Convergence
A layer in which the temperature decreases with 1°C per 100 m increasing altitude is neutral for what?
Dry air.
How to change the letters on microburst.
MBST.
