GEOG 1112 Lecture Notes - Lecture 4: Sensible Heat, Latent Heat, Shortwave Radio
Document Summary
Transmission: the passage of shortwave and longwave energy through the atmosphere or water, pass-through and nothing happens. Absorption: assimilation of radiation by molecules of matter and its conversion from one form of energy to another. Co2 and water vapor absorb solar radiation and longwave radiation. Short wave energy is like pay check coming in; long wave is like expense going out. 40% of solar radiation absorbed by atmosphere. Scattering is when the direction of light"s movement is changed but not wavelengths. Scattered light reaches the surface as diffuse radiation. Sky is blue because of raylegh scattering: gas molecules scatter shorter wavelengths of light (blues and violets) Heat: the flow of kinetic energy between molecules and from one body or substance to another resulting from a temperature difference between them. 2 types: sensible: kinetic energy of molecular motion, latent: energy gained or lost due to phase change. Radiation: energy traveling through air or space.
