IDSB02H3 Lecture 4: Lecture 4
27 Jan 2017
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Idsb02 lecture 4: climatology and climate change. January 25th, 2017: solar energy inputs into the earth system are the main determinant of. Convection: surface inputs of energy + energy of evaporation = air rises (energy inputs comes to the equator and heats up so that energy evaporates) If two adjacent areas have different air pressure (high and low) then air flows from high to low (pressure gradient force) Creates low pressure at surface an falling high pressure. Air rises with evaporation the air rises up, low pressure is left at the equator while high pressure increases as it rises. General circulation: knowledge of forces (pressure gradient force + coriolis effect + friction) allows us to construct a basic model of how air moves globally. Cell theory: at equator, energy inputs are maximum an heated air rises and diverges creating low pressure zones. Air moves poleward, cools, and descends to the surface creating a high pressure zone.
