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Satellite Images

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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Satellite Images

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  1. Satellite Images

  2. 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

  3. IR Images • Terrestrial radiation • 10-12 m • light area =cold surface • Dark areas = warmer surface • Stratus=grey • Cirrus =bright

  4. 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

  5. Friday, November 9, 2007 3:15 pm

  6. April 1, 1960: • TIROS (television infrared observation satellite)

  7. Satellite orbits • Geostationary satellites (GOES, GEO) • 35500 km (22 236 miles) • 24 h period • Geostationary satellite server: http://www.goes.noaa.gov/

  8. 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

  9. 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

  10. 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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