FIRST EXAM EQUATION SHEET
Distance = Rate * Time
KE = (1/2) m v^2 (Joules)
PE = mgh (Joules)
a = reflected radiation/Incident radiation (Albedo)
angle of incident radiation = angle of reflected radiation
E = sigma T(K)^4 (Watt/m^2) Sigma = 5.67 x 10^-8 W/(m^2K^4)
lambda(max) = 2897micro m/T(K) (micro m)
T(F) = 9/5T(C) + 32o
T(C) = (T(F) - 32)*5/9 T(K) = T(C) + 273.15
Specific Heat = # of calories of heat to raise 1 gram of
the substance 1oC.
= # Joules of heat to raise 1 kg of a substance 1oC.
Specific Heat of water = 1.0 cal/(gmoC) or 4186 J/(kgoC)
Specific Heat of ice = 0.5 cal/(gmoC) or 2093 J/(kgoC)
Heat transferred = mass (kg) specific heat (T(oC)end -T(oC)start)
(cal or Joule)
Heat transferred/time = area(m^2)(heat conductivity(watts/m oC))
(conduction) x(T(oC)end -T(oC)start)/separation (watt)
Heat transferred/time = Km v^2/t(seconds) (watt)
(Convection)
For water/ice/
Latent Heat of Melting/Fusion = 80 cal/gm of ice/water.
Latent Heat of Vaporization = 540 cal/gm of water (at 100oC)
= 600 cal/gm of water (at 0oC).
Latent Heat of Sublimation = 680 cal.
Heating/Cooling Degree-Days = 65o - Average Temp for one
day.
if answer is + then Heating Deg. Day)
if answer is - then Cooling Deg. Day)
Global Radiation Balance
Solar Radiation Budget = Scattered & Reflected to
Space + Absorbed by Earth
+ Absorbed by Atmosphere.
Radiation Budget of (Earth) = IR Cooling - Solar Heating
- IR from atmosphere
Radiation Budget of (Atm) = IR Cooling - Solar Heating
-Latent heat - Convection & Conduction
Heat Transfer (Earth Surface to Atm) = Sensible
heating + Latent Heating.
Zenith Angle of the Sun at Noon
On an equinox day = latitude angle
On summer solstice = (latitude - 23 1/2) degrees
On winter solstice = (latitude + 23 1/2) degrees
On any day = (latitude - solar declination) degrees
Sun's elevation at noon = 90 (degrees) - zenith angle
Average Lapse rate = -6.5(degrees)/km
Temp in troposphere = T (surface)(oC) - (6.5(oC)/km) h(km)
02-13-08