Aviation weather Flashcards
What two additional ingredients does natural air have that dry air doesn’t
Water vapor and condensation nuclei
In which layer of atmosphere does weather occur
Troposphere
What is the difference between convection and advection
Convection is vertical transfer
Advection is horizontal
How is pressure depicted in a weather map
Isobars, depicted 4 mb apart
What determines wind speed?
Pressure gradient force (PGF)
How is flight performance effected by moisture
Less air density, reduction in lift, less performance
Which 3 atmospheric conditions provide the best lift
High pressure, low temperature, low humidity
During Stagefield training and frontal passage, what would you expect to happen to wind direction and speed?
Wind direction shift of 90 degrees and wind speed increase
Describe formation of advection fog
Prevailing wind blowing over a large body of water
What type of dog is expecting where air is blowing up a mountain
Upslope fog
Types of fog
Radiation, advection, precipitation induced, upslope, freezing, ice
Types of icing
Frost, Rime, clear, freezing rain, mixed icing,
Thunderstorm developmental stages
Cumulus stage, mature stage, dissipation stage
How far is it recommended to stay clear of thunderstorms
20 NM
What is a micro burst
Short lived powerful downburst associated with connective activity
(Powerful falling column of air)
