GEG 1301 Lecture Notes - Lecture 3: Sensible Heat, Latent Heat, Solar Constant

• School: University of Ottawa
• Department: Geography
• Course: GEG 1301
• Professor: Denis Lacelle

Document Summary

Rotation and revolution of earth are both counter-clockwise. The vast majority of earth"s energy comes from the sun (99. 9%) The remainder comes from the erath itself (endogenetic energy) Convection: transfer through gas or liquid matter. Sensible heat is the kinetic energy in a body, can be measured with a thermometer. Latent heat is stored in matter and exchanged during a phase change. Powerful solar winds can cause damage on earth. Shorter wavelength = higher frequency and vice versa. Stefan-boltzman law: e= t4 where t is in kelvin. Wien"s displacement law: max = (2897/t) * 10-6. The wavelength of the highest energy emissions. Determines how much energy reaches the top of the atmosphere. Solar constant is the average amount of radiation received at the top of the atmosphere. 1370 w/m2 measured ant the thermopause ~ 480km above the surface. Seasons are caused by the earth"s axial tilt ~ 23. 5 . Same as the latitudes of the tropics of cancer and capricorn.