Radiometric cloud imaging with an uncooled microbolometer thermal infrared camera.

  • Shaw J
  • Nugent P
  • Pust N
 et al. 
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Abstract

An uncooled microbolometer-array thermal infrared camera has been incorporated into a remote sensing system for radiometric sky imaging. The radiometric calibration is validated and improved through direct comparison with spectrally integrated data from the Atmospheric Emitted Radiance Interferometer (AERI). With the improved calibration, the Infrared Cloud Imager (ICI) system routinely obtains sky images with radiometric uncertainty less than 0.5 W/(m(2 )sr) for extended deployments in challenging field environments. We demonstrate the infrared cloud imaging technique with still and time-lapse imagery of clear and cloudy skies, including stratus, cirrus, and wave clouds.

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Authors

  • Joseph Shaw

  • Paul Nugent

  • Nathan Pust

  • Brentha Thurairajah

  • Kohei Mizutani

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