Galileo Photopolarimeter-Radiometer Observations of Jupiter and the Galilean Satellites

@article{Orton1996GalileoPO,
  title={Galileo Photopolarimeter-Radiometer Observations of Jupiter and the Galilean Satellites},
  author={Glenn S. Orton and John R. Spencer and Lisa deMena Travis and Terry Z. Martin and Leslie K. Tamppari},
  journal={Science},
  year={1996},
  volume={274},
  pages={389 - 391}
}
Photopolarimeter-Radiometer (PPR) maps of daytime temperatures on Ganymede at a resolution of 220 kilometers show the expected anticorrelation with albedo, but morning temperatures were about 10 kelvin warmer than expected. Europa had a subsolar temperature of 128 kelvin and a lower effective thermal inertia than either Ganymede or Callisto, and Io's night side was cooler than predicted by recent models, perhaps requiring revision of heat-flow estimates. The lowest 250-millibar temperatures in… 

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