Final Flashcards
Atmospheric pressure
Weight of air above
Nautical miles
1 spot = 60 nm
Latitude horizontal or vertical, 1st or 2nd?
Horizontal, 1st
Sun angles
Sa=90-n
Atmospheric pressure on station model: 025
1002.5
Dew point units
Degrees Fahrenheit
Air temperature units
Degrees fahrenheit
Rising parcel of air
Expands, less collisions, decreasing density
Troposphere
Heated by convection
Total energy measurement
Kelvin
Environmental elapse rate(ELR)
H2-h1
______
T2-t1
Dry parcel at sea level is 72F and rises to 2000 ft , what will air temp be at 2000 ft?
2000ft x -5.5ft/1000 ft =-11
72-11=61F
Environmental temperature lapse rate change with heigh from surface to space
Decrease, increase, decrease, increase
Which region of atmosphere has the most heat?
Troposphere
Consider a constant volume of air with constant temperature and pressure. What changes as the air becomes more humid?
Air becomes less dense because the water vapor molecules decrease the mass
Consider a constant volume with constant humidity and pressure. How does air density change as it becomes cooler?
The air becomes more dense because there are more molecules which increases mass
Which side of the dip in jet stream produces stormy weather?
East
500 ml beaker vs 1 liter beaker
Same kinetic energy but more hear in larger beaker
Two gases that comprise 99% of earths volume of dry air
Nitrogen and oxygen
Normal atmospheric pressure at sea level
1013.2 mb or 29.92 in
Thin white clouds spread across sky
Cirrostratus
Low clouds that always cause rain or snow
Nimbostratus
Tall clouds called thunderstorms
Cumulolimbus
Common fog in mountain regions
Upslope fog
Fog formed above cold waters
Advection fog
Fog formed in rainy conditions
Frontal fog
Fog formed along ny coastline in late fall early winter
Steam fog
Bergeron process
A supercooling process when liquid droplets evaporate and water vapor leaves and drops onto ice crystal forming a snowflake
Three ingredients to form clouds or fog
1 water vapor
2 cooling mechanism
3 condensation nuclei
Freezing rain
Freezes as it hits the ground. The surface is ice
Coellison coalescence
Droplets fall and collect more droplets and form a rain drop
3 stages of thunderstorms
Cumulus stage
Mature stage
Dissapaiting stage