Met Flashcards

1
Q

What is wind going up a hill called?

A

Orographic uplift

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2
Q

Warm parcels of air rising is called?

A

Convection

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3
Q

Cloud trigger actions

A
Mass ascent
Convergence
Turbulence 
Convection
Orographic uplift
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4
Q

Warm parcels of air rising makes what kind of atmosphere?

A

Unstable atmosphere

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5
Q

Warm air hold more or less water vapour?

A

More

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6
Q

Cloud amount is measured in what?

A

Oktas

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7
Q

How many oktas is few?

A

1-2

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8
Q

How many oktas is scattered (skt)?

A

3-4

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9
Q

How many oktas is Broken (bkn)

A

5-7

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10
Q

How many oktas is overcast (ovc)

A

8

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11
Q

What does SKC mean?

A

Sky clear

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12
Q

VV/// means what?

A

Sky obscured. Can’t see cloud so thick fog or something.

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13
Q

How do we write no significant cloud?

A

NSC

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14
Q

What are some high pressure system attribute?

A

Air sinking, clear skies, light winds, haze/fog/mist, slow moving so can last several days.

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15
Q

What are some low pressure attributes?

A

Air rising, clouds, precipitation, windy,

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16
Q

3 types of low pressure system?

A
Thermal low (showers, t/s,shra)
Polar low (snow, shsn)
Orographic low (mtw, sev turn)
17
Q

What is a ridge?

A

Extension of high pressure, benign, transient.

18
Q

What’s a trough?

A

Extension of low pressure, convergence, cu, tcu, cb, shra, ts,

19
Q

What is a col?

A

An area of slack winds between 2 highs and 2 lows

20
Q

Name types of air masses?

A

Polar, maritime, continental, tropical maritime, tropical continental, polar continental, polar maritime, arctic maritime, returning polar maritime

21
Q

Lowest temp water can reach in clouds?

A

Around 40 degrees

22
Q

What is a front?

A

A boundary between 2 air masses

23
Q

Polar maritime weather?

A

Unstable, wet, tcu, cbs, ts,

24
Q

Tropical maritime conditions?

A

Low cloud (stratus, sc) Fog, mist,

25
Q

Returning polar maritime conditions?

A

Cold, wet, cb, sc

26
Q

Define cold occlusion?

A

Front come together, Cold front moves under the warm front and touches the ground

27
Q

Define warm occlusion?

A

2 fronts come together, warm front moves over cold front, warm front touches the ground