Chapter 4 and 6 Foldable notes. Solar Radiation Greenhouse Effect.
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Transcript of Chapter 4 and 6 Foldable notes. Solar Radiation Greenhouse Effect.
Chapter 4 and 6
Foldable notes
Solar Radiation
Greenhouse Effect
Layers of the Atmosphere
Ozone Layer
Smog
100% Solar Radiation
20%
50%
Solar Radiation
• 70% of the suns solar radiation is absorbed by Earth’s land, ocean, & atmosphere.
• 30% of the suns solar radiation is reflected by clouds, dust, air & land.
100% of the solar radiation.
Some radiation escapes back into space.
Greenhouse gases radiate energy back to Earth’s surface.
Gases in the troposhere.
H2O
CO2
CH4
NO2
Greenhouse effect
•The warming of the Earth’s surface and troposphere from gases that trap heat.
• The burning of fossil fuels adds CO2
• Deforestation (removing trees) reduces the use of CO2 by decreasing photosynthesis.
•The warmer the Earth, the more gases it traps.
Greenhouse effect
• Major gases:1.(H2O) Water 2.(CO2) Carbon dioxide (from burning fossil fuels)
3.(CH4) Methane (fossil fuels, livestock, landfills)
4.(NO2) Nitrous oxide (fossil fuels, fertilizers)• (O3) Ozone • (CCl3F) CFCs (chlorofluorocarbon)
Ozone layer O3 O3
O3
O3O3O3
H2OCO2 H2O
CO2
Satellites
meteor
Layers of the Atmosphere
• Exosphere – “outer space”
• Thermosphere – satellites are placed
• Mesosphere – meteors burn up
• Stratosphere – ozone layer, airplanes fly
• Troposhere– all weather occurs, almost all H2O and CO2 in the atmosphere
Ozone layer
• Ozone is O3
• Absorbs harmful ultraviolet radiation from the sun. (Earth’s sunscreen!)
• Has been damaged by humans use of CFCs (chlorofluorocarbon) CCl3F and exhaust compounds (from airplanes).
• CCl3F CCl2F + Cl UV radiation• Naturally the ozone layer thins “the hole” in the
Spring over the Antarctic.
Smog
landocean
Normal Conditions: Warm air near the Earth rises. (Air is heated from below as the sun warms the Earth’s surface.)
Inversion Conditions: Colder air is near the Earth, trapped under warm air. Caused when a warm front (air mass) moves over a cold front (air mass).
Solar Radiation