perihelion
closest to the sun
aphelion
farthest from the sun
obliquity
earth’s tilt, causes seasons
eccentricity
shapes of earth’s orbit
precession of equinoxes
earth’s wobble
most abundant gas
nitrogen
ozone
filters UV/short wave radiation
montreal protocol
eliminate production of CFC aerosols
short wave radiation
UV, xrays, gamma rays
long wave
microwave, radio wave
albedo
reflectivity
pressure gradient force/ pgf
air moving from high pressure to low pressure, creates wind
hadley cell
warm air from tropics pushed up, 30 degrees north/south latitude
sub-tropical highs are associated with
horse latitudes
gyres
oceanic circulation patterns
El Nino Southern Oscillation
weakening of trade winds, reversal of walker cell, drought in the pacific NW, peru current
La Nina
intensifying trade winds
latent heat exchange
energy needed to change states
water to ice heat exchange
80 calories/grams added
relative humidity
out of 100 units of water vapor possible, 25 units = 25%
vapor pressure
portion of air pressure composed of water molecules
dew point temperature
temp when relative humidity is 100%
radiation fog
environment w clear skies and a calm night
advection fog
san francisco