MET Q15 - Upper winds Flashcards
At which time, if any, are polar front jet streams over the south pacific usually located at a lower latitude?
Select one:
a.October
b.There is no annual variation
c.July.
d.January
b.There is no annual variation
In which zone of a jet stream is the strongest clear air turbulence (CAT) to be expected?
Select one:
a.the warm air side of the core
b.in the centre of the core
c.The cold air side of the core
d.about 12000ft above the core
c.The cold air side of the core
In March, the N Hemisphere polar front jet stream is typically at…
Select one:
a.80o N
b.60o N
c.over the north pole area
d.30o N
b.60o N
At which time of year are polar front jet streams over the south pacific usually strongest?
Select one:
a.July
b.October
c.January
d.there is no annual variation
a.July
What is the average height of the jet core within the polar front jet stream?
Select one:
a.40,000ft
b.20,000ft
c.50,000ft
d.30,000ft
d.30,000ft
Flying south to north in the southern hemisphere an aircraft crosses the polar front jet stream just above the core. What happens to the outside air temperature?
Select one:
a.it increases
b.it fluctuates
c.it remains constant
d.it decreases
d.it decreases
In May, the approximate position of the N Hemisphere sub-tropical jet stream is:
Select one:
a.Approx 10°N
b.Approx 60°N
c.Over the equatorial area
d.Approx 40°N.
d.Approx 40°N.
Flying from South to North in the Northern Hemisphere an aircraft crosses the Polar Front Jetstream just below the core. What happens to the outside air temperature?
Select one:
a.increases
b.Remains Constant
c.decreases
d.Fluctuates
c.decreases
On which pressure chart would the arctic jet stream core most likely be identified?
Select one:
a.500hpa
b.300hpa
c.100hpa
d.200hpa
a.500hpa
What is the minimum wind speed of a jet stream?
Select one:
a.64kt
b.150kt
c.80kt
d.60kt
d.60kt
