Galileo photopolarimeter-radiometer observations of Jupiter and the Galilean satellites

Science

Volumn 274, Issue 5286, 1996, Pages 389-391

  Orton, G S ^a   Spencer, J R ^b   Travis, L D ^c   Martin, T Z ^a   Tamppari, L K ^a  

^a CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

^b LOWELL OBSERVATORY   (United States)

^c NASA GODDARD INSTITUTE FOR SPACE STUDIES   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; ASTRONOMY; CLOUD; INFRARED RADIATION; POLARIMETRY; PRIORITY JOURNAL; RADIATION DETECTOR; SPACE; TELECOMMUNICATION; TEMPERATURE MEASUREMENT; THERMAL ANALYSIS; VOLCANO;

EID: 0029803847     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.274.5286.389     Document Type: Article

References (16)

1. E. E. Russell et al., Space Sci. Rev. 60, 531 (1992); Fig. 2 illustrates the bandpasses of the discrete filters compared with a spectrum of Jupiter.
2. J. Spencer, thesis, University of Arizona (1987); M. Urquhart and B. Jakosky, J. Geophys. Res. 101, 21169 (1996).
3. J. Spencer, thesis, University of Arizona (1987); M. Urquhart and B. Jakosky, J. Geophys. Res. 101, 21169 (1996).
4. New global controlled mosaic of Voyager Ganymede images prepared by R. Sucharski, (U.S. Geological Survey, Flagstaff, AZ).
5. R. H. Brown and D. L. Matson, Icarus 72, 84 (1987).
6. D. L. Domingue, B. W. Hapke, G. W. Lockwood, D. T. Thompson, Icarus 90, 30 (1991).
7. A. S. McEwen, in preparation.
8. G. J. Veeder, D. L. Matson, T. V. Johnson, D. L. Blaney. J. D. Goguen, J. Geophys. Res. 99, 17095 (1994).
9. 2 of 0.31 taken from Sada et al. (9).
10. 2 of 0.31 taken from Sada et al. (9).
11. P. V. Sada, R. F. Beebe, B. J. Conrath, Icarus 119, 311 (1996).
12. F. M. Flasar. B. J. Conrath, J. A. Pirraglia, J. Geophys. Res. 86, 8759 (1981).
13. G. S. Orton et al., Science 265, 625 (1994).
14. R. Carlson et al., ibid. 274, 385 (1996).
15. Not long after the start of these extensive observations, the PPR filter wheel was found to have remained at the position corresponding to the 37-μm discrete filter, despite commands to move to other filter positions. Therefore all subsequent measurements, including almost all the longitudes of this sequence, were made in the 37-μm discrete filter. Interpretation of these data without independent constraints on cloud properties will be challenging. Our G1 calibration target observations were also made only with this filter, which will make difficult our reexamination of the radiometric calibration.
16. We thank the Galileo Mission Project for their support and carrying this work through. We also thank A. Lacis and J. Hansen for leadership during the early phases of the PPR instrument development, E. Russell for design work, J. Ferrier for maintaining a radiometric calibration scheme, and H. Peiris and C. Connor for their work in processing the data.