Met Flashcards
What is wind going up a hill called?
Orographic uplift
Warm parcels of air rising is called?
Convection
Cloud trigger actions
Mass ascent Convergence Turbulence Convection Orographic uplift
Warm parcels of air rising makes what kind of atmosphere?
Unstable atmosphere
Warm air hold more or less water vapour?
More
Cloud amount is measured in what?
Oktas
How many oktas is few?
1-2
How many oktas is scattered (skt)?
3-4
How many oktas is Broken (bkn)
5-7
How many oktas is overcast (ovc)
8
What does SKC mean?
Sky clear
VV/// means what?
Sky obscured. Can’t see cloud so thick fog or something.
How do we write no significant cloud?
NSC
What are some high pressure system attribute?
Air sinking, clear skies, light winds, haze/fog/mist, slow moving so can last several days.
What are some low pressure attributes?
Air rising, clouds, precipitation, windy,
3 types of low pressure system?
Thermal low (showers, t/s,shra) Polar low (snow, shsn) Orographic low (mtw, sev turn)
What is a ridge?
Extension of high pressure, benign, transient.
What’s a trough?
Extension of low pressure, convergence, cu, tcu, cb, shra, ts,
What is a col?
An area of slack winds between 2 highs and 2 lows
Name types of air masses?
Polar, maritime, continental, tropical maritime, tropical continental, polar continental, polar maritime, arctic maritime, returning polar maritime
Lowest temp water can reach in clouds?
Around 40 degrees
What is a front?
A boundary between 2 air masses
Polar maritime weather?
Unstable, wet, tcu, cbs, ts,
Tropical maritime conditions?
Low cloud (stratus, sc) Fog, mist,
