ma mainly y N 2 and O and O 2 (variable) Greenhouse Gases: H 2 O, - - PowerPoint PPT Presentation

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ma mainly y N 2 and O and O 2 (variable) Greenhouse Gases: H 2 O, - - PowerPoint PPT Presentation

Aug 26, 2022 378 likes •435 views

+ 1% other stuff - 0.93% Ar - CO 2 400ppm (0.04%) - Ne 18ppm - He 5ppm - CH 4 2ppm - Kr 1ppm + 0-4% water vapor (H 2 O) ma mainly y N 2 and O and O 2 (variable) Greenhouse Gases: H 2 O, CO 2 , CH 4 SIO15: Topic 15: The Atmosphere and

slide-1
SLIDE 1

SIO15: Topic 15: The Atmosphere and Climate

+ 1% other stuff

  • 0.93% Ar
  • CO2 400ppm (0.04%)
  • Ne 18ppm
  • He 5ppm
  • CH4 2ppm
  • Kr 1ppm

ma mainly y N2 and O and O2

+ 0-4% water vapor (H2O) (variable) Greenhouse Gases: H2O, CO2, CH4

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SLIDE 2

SIO15: Topic 15: The Atmosphere and Climate 50% air below 5.6 km 90% air below 16 km 99.99997% below 100km

  • air pressure: push due to weight of

atmosphere above

  • greatest at sea level:

1 atmosphere, 14.7 PSI, 1035 mbar (g/cm2)

  • pressure and density decrease

exponentially with altitude simple

slide-3
SLIDE 3

SIO15: Topic 15: The Atmosphere and Climate

  • T-function

changes with altitude

  • decreases from 18ºC to
  • 55ºC in

troposphere

  • increases in stratosphere
  • decreases in mesosphere
  • increases in thermosphere

complicated

slide-4
SLIDE 4

SIO15: Topic 15: The Atmosphere and Climate

troposphere: lower 10km; weather layer, mixing stratosphere: next 35km; very dry, no vertical mixing, O3 layer mesosphere: less O3; meteorites burn up thermosphere: < 1% air; (ISS at ~350 km)

Layers follow T-function