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Properties of the atmosphere

METEOROLOGY. Properties of the atmosphere. The Atmosphere. Atmosphere: Envelope of gas that surrounds a planet Origin of the Atmosphere: most likely from out-gassing, which is gases released by a volcano The early atmosphere was changed from CO2 to oxygen by photosynthesis.

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Properties of the atmosphere

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  1. METEOROLOGY Properties of the atmosphere

  2. The Atmosphere • Atmosphere: Envelope of gas that surrounds a planet • Origin of the Atmosphere: most likely from out-gassing, which is gases released by a volcano • The early atmosphere was changed from CO2 to oxygen by photosynthesis

  3. The Atmosphere is about 78% nitrogen and 21% oxygen (ESRT pg 1)

  4. Layers of the Atmosphere • ESRT page 14

  5. Troposphere (0-7 miles) • Closest to Earth’s surface • Where weather occurs • Lower portion warmed by heat coming from Earth’s surface then temp generally cools

  6. Stratosphere (7-30 mi) • Air temp. warms slightly • Location of Jet Stream • Ozone is located here-absorbs radiation

  7. Mesosphere (30-50 mi) • Temperature steadily decreases with increasing altitude • Upper is coldest region of atm. • Meteors usually burn up here

  8. Ionosphere • Don’t write-Not one of the main layers • Located in the mesosphere and thermosphere • Aurora borealis: occur when ionized gases emit visible light • Don’t write- Ionization: Occurs when gases lose electrons due to radiation from the sun

  9. Thermosphere and Exosphere WRITE: Thermosphere (50-180 mi) • Temperature increases with altitude due to solar energy DO NOT WRITE: Exosphere: • Not a main layer • Last layer • Extends into outer space

  10. Layers of the Atmosphere https://www.youtube.com/watch?v=WaikvaAw2nk

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