Surface Winds
What is a surface wind?
Wind near the surface of the earth
Where are jet streams found?
In high speed winds that exist in higher levels of the atmosphere
What are the 3 main factors that determine weather in an air mass?
Moisture content, cooling process, stability of the air
What is a front?
transition zone between 2 air masses, when they interact there is weather changes
What does WO1 Aw-Yeong do in her free time?
Fly of course!
Why do we have surface winds?
Friction between air and ground
Where do jet streams flow?
From west to east
Why is the cooling process important?
contributes to the formation of clouds
What is a cold front?
When cold air overtakes mass of warm air, cold air (denser) stays on surface and undercuts warm violently
Why is Vancouver called ‘’Raincouver’’?
What kind and why do winds go down at night?
Katabatic and because air becomes cooler and denser
What is CAT stand for and what is it?
clear air turbulence, bumpy turbulent condition that occurs in a cloudless sky
What are features of stable and unstable air
stable air - stratus clouds, poor visibility, drizzle precipitation
unstable air - cumulus clouds, good visibility, showery precip
What is the order of clouds that will develop in a warm front?
Cirrus, Cirrostratus, Altostratus, Nimbostratus, Stratus (CCANS)
How do you read a wind barb?
each short line is 5 knots, each long line is 10 knots, points to direction wind is coming from
What are some dangers to aircraft of mountain waves?
Strong downdrafts, turbulence, wind shear, altimeter errors
where is CAT found and what is a danger?
found above 15000ft and most probable just above central core of a jet stream
it is hard to forecast so it can cause shock to the pilot
Temperature is lowered to its dewpoint
What does a warm front look like on a GFA?
red semicircles
What is WO1 Aw-Yeong studying in university?
Health science!
What are gusts caused by? name 2 answers
Mechanical turbulence which results from friction between air and ground and by unequal heating of earth's surface called convection
What does GFA stand for and which GFA can you find jet streams and CAT?
graphical forecast for aviation and on the Icing, Turbulence & Freezing level chart
What is the difference between a warm and cold air mass?
Cold air masses - arctic and polar air masses
Instability, turbulence, good visibility, cumulus clouds, showery precipitation
Warm air mass - tropic
Stability, smooth air, poor visibility, stratus clouds, fog, drizzle
What is an occluded front and what does an occluded front look like on a GFA?
Wave like disturbance sometimes forms on a stationary front
Can develop into small low called depression - one section of front begins to move a warm front and the other section as a cold front
Overtime cold front overtakes warm front to form a single occluded front
Cold air catches up with itself as it flows around low pressure area
On a GFA, it is purple alternating semicircles and triangles
Name all the Cadet summer training camps WO1 Aw-Yeong attended during her cadet career so far
General Training, Advanced Aviation, Military Musician, Cadet Activity Program 1 Staff Cadet, Glider Pilot Training Course, Power Pilot Training Course