Publication Abstracts

Orton et al. 1996

Orton, G.S., J.R. Spencer, L.D. Travis, T.Z. Martin, and L.K. Tamppari, 1996: Galileo Photopolarimeter-Radiometer observations of Jupiter and the Galilean Satellites. Science, 274, 389-391, doi:10.1126/science.274.5286.389.

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 the Great Red Spot (GRS) generally corresponded to the visually darkest regions. Temperatures remained cold north of the GRS, but they rose by as much as 6 kelvin to the south over the 2800-kilometer PPR resolution. A visually bright region northwest of the GRS was also relatively cold. It is likely that NH3 clouds affected the determination of the 500-millibar temperature field, which appears qualitatively different.

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BibTeX Citation

  author={Orton, G. S. and Spencer, J. R. and Travis, L. D. and Martin, T. Z. and Tamppari, L. K.},
  title={Galileo Photopolarimeter-Radiometer observations of Jupiter and the Galilean Satellites},

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RIS Citation

ID  - or01000b
AU  - Orton, G. S.
AU  - Spencer, J. R.
AU  - Travis, L. D.
AU  - Martin, T. Z.
AU  - Tamppari, L. K.
PY  - 1996
TI  - Galileo Photopolarimeter-Radiometer observations of Jupiter and the Galilean Satellites
JA  - Science
VL  - 274
SP  - 389
EP  - 391
DO  - 10.1126/science.274.5286.389
ER  -

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