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The Solar 'Constant' - Faculae vs. Sunspots
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Three views of the Sun showing different levels of solar activity. The color table has been altered to enhance the appearance of the faculae (white regions) which are hotter than sunspots (red-black regions) and whose greater total area contribute to increasing the solar flux reaching the Earth.
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Low solar activity - October 28, 1998
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Moderate solar activity - April 27, 2002
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High solar activity - March 28, 2001
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Animator: Tom Bridgman
Studio: SVS
Date Completed: November 30, 2002
Scientist: William R. Ochs (NASA/GSFC), Robert F. Cahalan (NASA/GSFC), Gary Rottman (University of Colorado/LASP)
Instrument: PSPT/CaIIK camera, SORCE
Keywords: Sun, Faculae, Sunspots, Solar Cycle
DLESESubject: Space science
ImageMods: Images were resampled so the solar disk has the same apparent size on all images (varying Earth-Sun distance effect removed) and pixels resampled to square aspect.
Data Collected: 2002-04-27T18:03:48.864Z, 2001-03-28T18:03:20.113Z, 1998-10-28T19:33:41.000Z
Animation Series: SORCE Prelaunch
Please give credit for this visualization to NASA/Goddard Space Flight Center
Scientific Visualization Studio. Source data courtesy of HAO & NSO PSPT project team. HAO is a division of the National Center for Atmospheric Research which is supported by the National Science Foundation.
Additional Credit is given to Special thanks to Vanessa George (University of Colorado/LASP) and Randy Meisner(Michigan State University)
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