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Satellite Images. Visible Images. Reflected and scattered solar light 0.4-0.7  m Light area = high Albedo Lots of backscattering = high albedo Stratus=bright Cirrus =grey. IR Images. Terrestrial radiation 10-12  m light area =cold surface Dark areas = warmer surface

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visible images
Visible Images
  • Reflected and scattered solar light
  • 0.4-0.7 m
  • Light area = high Albedo
  • Lots of backscattering = high albedo
  • Stratus=bright
  • Cirrus =grey
ir images
IR Images
  • Terrestrial radiation
  • 10-12 m
  • light area =cold surface
  • Dark areas = warmer surface
  • Stratus=grey
  • Cirrus =bright
water vapor images
Water vapor images
  • Emission by water vapor
  • 6.5-6.9 m
  • light area =lots of water vapor
  • Dark areas = dry air
  • 300-600 mb level
  • Strong contrast = strong upper winds
  • High clouds (cumulonimbus calvus) =bright
slide6
April 1, 1960:
    • TIROS (television infrared observation satellite)
satellite orbits
Satellite orbits
  • Geostationary satellites (GOES, GEO)
    • 35500 km (22 236 miles)
    • 24 h period
  • Geostationary satellite server: http://www.goes.noaa.gov/
satellite orbits1
Satellite orbits
  • Polar satellites (POES), low earth orbit (LEO)
    • 14 revolutions a day
    • 833 km height
  • NOAA-11, NOAA-14
  • http://noaasis.noaa.gov/NOAASIS/ml/genlsatl.html
comparison goes poes
Comparison GOES/POES
  • GOES
  • Constant viewing angle
  • Complete terrestrial surface is visible
  • No polar view
  • Less detailed
  • POES
  • Very detailed
  • View of polar regions
  • Limited data (out of range)
  • Shifting orbit
visible infrared water vapor images
Visible, infrared, water vapor images
  • Visible: 0.4 to 0.76 m
  • IR: 10-12 m atmospheric window
  • Water vapor: 6.7 m
  • http://www.goes.noaa.gov/
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