Moisture And Wind 2 Flashcards
1
Q
Humidity measurements
A
Absolute expressed in kg per cubic metre
An actual amount of wv in air
Relative humidity
Relative to holding potential
2
Q
Dew point
A
Assumes a constant pressure
Actually reduces by .5° per 1000 ft
Only effected by changes in water content not temp
Moisture air less dense than dry air
3
Q
Diurnal variation
A
Backs and increases after sunrise
Veers and decreases after sunset
Air less dense during day
Will flow similar to 2000’ wind
4
Q
Friction layer
A
2000’ agl
Wind roughly 1/3 2000’ speed
Moving from friction layer to upper level wind backs 30°
5
Q
Buys ballots Law
A
SH back to wind low pressure is on the right
Low right
High left
6
Q
Rate of evaporation effects
A
Best for evaporation
Warm air
Dry air
Wind (more mixing)
Low pressure
