MET Q20 - Climatology Flashcards
What weather conditions are most likely to affect an approach into Dakar, W Africa (15N 17W) during July?
Select one:
a.Wet and thundery due to the proximity of the ITCZ
b.Dry and clear due to the influence of the Azores High
c.Generally clear skies and the NW trade winds
d.Reduced visibility due to the rising sand of the Harmattan
a.Wet and thundery due to the proximity of the ITCZ
A cold air outbreak is when cold air stretches into mid or low latitude. What hazards to aviation are associated with this phenomenon?
Select one:
a.The lower tropopause caused by the outbreak means usual flight altitudes would then occur in the stratosphere
b.These events are seldom and short-lived so pose only a slight risk to aviation.
c.The severe surface cooling creates a vast area of thick cold low level cloud
d.The unusual latitude leads to instability, cumuliform cloud and increased icing and turbulence risk
d.The unusual latitude leads to instability, cumuliform cloud and increased icing and turbulence risk
Which climatic zone would be described as having the lowest diurnal and seasonal variation?
Select one:
a.Equatorial wet or tropical rain zone
b.Tropical transitional or savannah zone
c.The dry arid zone
d.Mid-latitude temperate zone
a.Equatorial wet or tropical rain zone
What are the major wind patterns over West Africa in July/August and December/January respectively?
Select one:
a.A dry SW monsoon and a wet NE monsoon (Harmattan)
b.A dry NE monsoon (Harmattan) and a wet SW monsoon
c.A wet SW monsoon and a dry NE monsoon (Harmattan)
d.A wet NE monsoon (Harmattan) and a dry SW monsoon
c.A wet SW monsoon and a dry NE monsoon (Harmattan)
The weather conditions associated with the SW Monsoon are
Select one:
a.Calm wind, continuous light rain
b.Strong gusty winds, heavy showers
c.Calm wind, frontal cloud
d.Calm winds, clear skies
b.Strong gusty winds, heavy showers
What are the three major global circulation cells known as?
Select one:
a.Hadley, Ferrell and Polar
b.Hadley, Pampero and Doldrum
c.Harmattan, Ferrell and Bora
d.Hadley, Findeisen and Polar
a.Hadley, Ferrell and Polar
The Tropical Transitional/Savannah Climate is characterised by
Select one:
a.One short rainy season during the winter months followed by dry arid conditions thereafter
b.Dry arid conditions throughout the year
c.Two rainy seasons occurring mainly at the equinox
d.One short rainy season in summer and a long spell of dry arid conditions
d.One short rainy season in summer and a long spell of dry arid conditions
How do the Trade Winds change their direction when they have to travel through the geographical equator to the equatorial low pressure belt?
Select one:
a.NW Trades become SE and SW Trades become NE
b.NE Trades become SE and SE Trades become NE
c.NE Trades become NW and SE Trades become SW
d.NW Trades become SE and SW Trades become NE
c.NE Trades become NW and SE Trades become SW
What are the typical surface temperatures and humidity levels in tropical climates?
Select one:
a.+40 degrees C and 15g/kg
b.+25 degrees C and 1.8g/kg
c.+15 degrees C and 30g/kg
d.+30 degrees C and 28g/kg
d.+30 degrees C and 28g/kg
The weather conditions associated with the Horse latitudes are
Select one:
a.Strong SW wind, advection fog
b.Continuous precipitation, calm winds
c.Calm winds, clear skies
d.Gusty wind, heavy shower
c.Calm winds, clear skies
What would you consider to be the main flight hazards associated with the ITCZ?
Select one:
a.Reduced visibility under high pressure inversion
b.Severe storm activity
c.High humidity causing reduced performance at low level
d.Calm surface winds leading to poor performance
b.Severe storm activity
What is the average height of the zero degree isotherm over equatorial regions?
Select one:
a.10,000ft
b.30,000ft
c.16,000ft
d.25,000ft
c.16,000ft
