The Whole Fucking Thing Flashcards
(31 cards)
Cloud drop diameter
20 micrometers
Raindrop diamter
2000 micrometers
Cloud condensation nuclei
0.2 micrometers
What causes cloud droplets to form
condensation
Does further condensation of water vapor make cloud droplets grow into raindrops?
no
Where does collision & coalescence happen?
Warm clouds
Collision
small cloud drops join by random collision
Coalescence
larger & faster overtake smaller & slower
Where does accretion & aggregation happen?
Cold clouds
Accretion
Ice crystal growth by sweeping up supercooled water drops
Aggregation
Ice crystals collide and form single larger particle
Where does the WBF process happen?
Mixed clouds
WBF Process
ice crystals grow larger at expense of surrounding water droplets
What affects raindrop size in warm clouds?
more liquid water content & cloud thickness & range of cloud droplet size & updraft strength & opp. electrical charges
What’s the relationship between pressure & height?
Pressure decreases with increasing height
What is the rate between pressure and height?
Every 100m increase in height, 10mb decrease in pressure
What does heating/cooling of a column of air establish?
Horizontal variations that cause air to move horizontally
Station Pressure
pressure reading at a particular location & elevation
Sea Level Pressure
pressure adjusted to altitude of 0m (mean sea level) pressure & height change same as before
In the Northern Hemisphere, how does the wind blow at a low pressure center?
counter-clockwise & towards the center
In the Northern Hemisphere, how does the wind blow at a high pressure center?
Clockwise & outwards from the center
Coriolis Force Formula
CF = f * v where v = wind spd and f = coriolis parameter (2earth’s rotational ratesin of latitude)
Centrifugal Force Forumla
(mV^2)/r where m = mass, r = radius, v = spd of air parcel
Frictional Force Forumla
FF = -kv
