Tropical Storm Isaac by Night

NASA image acquired August 28, 2012


Early on August 28, 2012, the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi-NPP satellite captured this nighttime view of Tropical Storm Isaac and the cities near the Gulf Coast of the United States. The image was acquired just after local midnight by the VIIRS “day-night band,” which detects light in a range of wavelengths from green to near-infrared and uses light intensification to enable the detection of dim signals. In this case, the clouds of Isaac were lit by moonlight.


Credit: NASA Earth Observatory


NASA Earth Observatory image by Jesse Allen and Robert Simmon, using VIIRS Day Night Band data. Caption by Mike Carlowicz.


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NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.


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  • Derek_Custer 3y

    Outstanding image.
  • balaclava nine 3y

    what does "and uses light intensification" mean? just turns up the gain digitally? uses special circuits? a photomultiplier tube?
  • heroineworshipper 3y

    Why can't NOAA have a light intensifying satellite?
  • litlg 3y

    It means they reversed the polarity...
  • Alfonso Ochoa 2y

    Nice photos I like
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Taken on August 28, 2012
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