The Whole Fucking Thing Flashcards by Minnah Prufer

Q

Cloud drop diameter

A

20 micrometers

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Q

Raindrop diamter

A

2000 micrometers

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Q

Cloud condensation nuclei

A

0.2 micrometers

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Q

What causes cloud droplets to form

A

condensation

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Q

Does further condensation of water vapor make cloud droplets grow into raindrops?

A

no

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Q

Where does collision & coalescence happen?

A

Warm clouds

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Q

Collision

A

small cloud drops join by random collision

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Q

Coalescence

A

larger & faster overtake smaller & slower

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Q

Where does accretion & aggregation happen?

A

Cold clouds

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Q

Accretion

A

Ice crystal growth by sweeping up supercooled water drops

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Q

Aggregation

A

Ice crystals collide and form single larger particle

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Q

Where does the WBF process happen?

A

Mixed clouds

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Q

WBF Process

A

ice crystals grow larger at expense of surrounding water droplets

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Q

What affects raindrop size in warm clouds?

A

more liquid water content & cloud thickness & range of cloud droplet size & updraft strength & opp. electrical charges

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Q

What’s the relationship between pressure & height?

A

Pressure decreases with increasing height

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Q

What is the rate between pressure and height?

A

Every 100m increase in height, 10mb decrease in pressure

Q

What does heating/cooling of a column of air establish?

A

Horizontal variations that cause air to move horizontally

Q

Station Pressure

A

pressure reading at a particular location & elevation

Q

Sea Level Pressure

A

pressure adjusted to altitude of 0m (mean sea level) pressure & height change same as before

Q

In the Northern Hemisphere, how does the wind blow at a low pressure center?

A

counter-clockwise & towards the center

Q

In the Northern Hemisphere, how does the wind blow at a high pressure center?

A

Clockwise & outwards from the center

Q

Coriolis Force Formula

A

CF = f * v where v = wind spd and f = coriolis parameter (2earth’s rotational ratesin of latitude)

Q

Centrifugal Force Forumla

A

(mV^2)/r where m = mass, r = radius, v = spd of air parcel

Q

Frictional Force Forumla

A

FF = -kv

Q

Geostrophic Wind Forumla

A

(1/f)(1/p)(total p/d)

Q

Microscale

A

meters to 1 km | pgf&centrifugal force&frictional force important

Q

What is negligible in a microscale?

A

Coriolis Force

Q

Mesoscale

A

1km - 200 km | coriolis force most important

Q

Synpatic scale

A

200km-2km | geostrophic balance between pgf & coriolis most important

Q

What wind descends leeward slope of high mtns?

A

warm, dry wind (so vegas wind) - called chinook wind

Q

Santa Ana winds

A

warm, dry wind from N/NE into SoCal