ENV100Y5 Chapter Notes - Chapter 14: Environment And Climate Change Canada, Passive Smoking, Nitrogen Dioxide
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ENV100Y5 Full Course Notes
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Document Summary
Blankets the earth"s surface and provides us with the air we need to live. Tropopasuse: acts like a cap, limiting mixing between the trosphere and atmosphereic later above it. 80% of mass; 99% of water vapour & aerosols! Tropos = change where weather occurs (well mixed!: stratosphere: More dry and dense than the troposphere temperature increases upward due to absorption of solar energy by ozone layer (17-30 km)! O3 blocks uv radiation: mesosphere: above the stratosphere air pressure is really low and temperature decreases. 50km to80km above sea level: thermosphere : Earth"s atmosphere: absorbs radiation and moderates climate! Transports/recycles water, heat, pollutants, nutrients: vertical differences in temperature, density, and composition, human activity is changing the composition of the atmosphere. Layered: - thickest at equator; thin at poles. Solar energy heats the atmosphere: heats and moves the air! causes evaporation! creates seasons! in uences weather and climate! drives photosynthesis. Unequal distribution of solar energy- fig. 14. 4 pg 410.
