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The ATMOSPHERE

The ATMOSPHERE. Composition. 78% Nitrogen (N) 21% Oxygen (O) <1% other gases. Recycling of Atmospheric Materials. Troposphere. lowest region w here weather occurs temp. decr . w/ altitude 95% of all water vapor 75% of all atmospheric gases t op is tropopause. Stratosphere.

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The ATMOSPHERE

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  1. The ATMOSPHERE

  2. Composition • 78% Nitrogen (N) • 21% Oxygen (O) • <1% other gases

  3. Recycling of Atmospheric Materials

  4. Troposphere • lowest region • where weather occurs • temp. decr. w/ altitude • 95% of all water vapor • 75% of all atmospheric gases • top is tropopause

  5. Stratosphere Stratosphere • 2nd layer • contains Ozone Layer (O3) • Temp. incr. w/ altitude b/c of ozone • top is stratopause

  6. Mesosphere • temp. decr. w/ altitude • lowest temps in atmo found here • Top is mesopause

  7. Thermosphere • temp. incr. w/ altitude • heating b/c of absorption of solar radiation • highest temps in atmo can be found here

  8. Ionosphere • occurs w/in mesosphere & thermosphere • layer of electrically charged particles • effected by solar events • Auroras

  9. Exosphere • outermost layer • temp. incr. w/ alt. • satellites orbit Earth

  10. Earth’s Energy Budget

  11. Earth’s Energy Budget • 50% of insolation reaches Earth’s surface • Energy is transferred by • radiation • conduction • evaporation • condensation of water • energy transfer is the major cause of Earth’s weather

  12. Greenhouse Effect • Increase of certain gases trap extra heat • Gases include: • water vapor (H20) • carbon dioxide (CO2) • Methane (CH4)

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