GEOG 2050 Chapter : Chapter 4 Pt 2
Document Summary
Key terms: conduction, convection, advection, radiation, latent heat, specific heat, earth radiation budget, cloud-albedo forcing, cloud-greenhouse forcing, greenhouse effect, global dimming. Conduction: thermal energy from high temp to low temp (temp gradient, equalize temp differences, takes place in all types matter, solid, liquid, gasses, conductivity of material. Convection and advection: takes place in matter, liquids, gasses, transfer energy by movement, physical mixing, warm (less dense) air/water rises, cold (more dense) air/water descends, advection- horizontal mixing. Ice > melting >liquid >evaporation >vapor: vapor > evaporation > liquid> freezing > ice. The greenhouse effect: a real greenhouse traps heat inside, atmosphere absorbs heat energy, greenhouse gasses radiate long waves back to the earth, delaying the transfer of heat from earth to space. Clouds and energy effects (figure 4. 10: high clouds- net greenhouse forcing an atmospheric warming, low clouds- net albedo forcing an atmospheric cooling.
