Fig. 22. Thermal Phase Coefficients: Comparison of Topographic Models with
IRIS Observations.
Coefficients for models A and B, as a function of solar elevation. The
four ribbons in each plot are defined as in Figs.
19--21, with the
ribbon width giving the variation in thermal phase coefficient with emission
angle, between 0o and 30o either side of the vertical.
The model B results are shown for an albedo of 0.2 only: the results for
A=0.45 are very similar. Also shown are observed thermal phase coefficients
for Ganymede (G1--3,6) and Callisto (C1) with estimated errors equal to
the measurements.
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