GGR202H5 Lecture Notes - Lecture 93: Milankovitch Cycles, Global Warming Potential, Radiative Forcing
Document Summary
We can take a systems approach to earth"s energy cycle: o! Sources of energy (where energy comes from inputs or influxes) o! Sinks for energy (where energy goes outputs or outfluxes) o! Reservoirs (where energy is stored within the earth system) o! Fluxes (how energy moves around in the cycle processes) Terrestrial energy coming from within the earth. Tidal energy earth sun moon. Ocean + cryosphere (frozen parts of hydrosphere low level of heat energy, very diffuse reservoir (not concentrated)) Photosynthesis temporary stored of energy in biosphere (plants) Maturation pressure and heat, changes energy into fossil fuels in ground. Degradation: short wave length is becoming lower energy longer wave length energy. Ocean + cryosphere (ice caps are white, have large area) Radiative forcing: amount of change in energy that a given factor causes. Net irradiance = balance of incoming and outgoing energy. Measured at the boundary between the troposphere and stratosphere (tropopause)
