Thermal Structure of Jupiter's Upper Atmosphere Derived from the Galileo Probe |
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Authors: | A Seiff DB Kirk TCD Knight LA Young FS Milos E Venkatapathy JD Mihalov RC Blanchard RE Young G Schubert |
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Affiliation: | A. Seiff, Department of Meteorology, San Jose State University Foundation and MS 245-1, Ames Research Center, Moffett Field, CA 94035, USA. D. B. Kirk, University of Oregon, 37465 Riverside Drive, Pleasant Hill, Oregon 97455, USA. T. C. D. Knight, 2370 S. Brentwood St., Lakewood, CO 80227, USA. L. A. Young, Center for Space Physics, Boston University, 725 Commonwealth Ave., Boston, Massachusetts 02215, USA. F. S. Milos, M.S. 234-1, Ames Research Center, NASA, Moffett Field, CA 94035, USA. E. Venkatapathy, Eloret Institute, MS 230-2, Ames Research Center, Moffett Field, CA 94035, USA. J. D. Mihalov and R. E. Young, MS 245-3, Ames Research Center, Moffett Field, CA 94035, USA. R. C. Blanchard, MS 408A, Langley Research Center, NASA, Hampton, VA 23681, USA. G. Schubert, Department of Earth and Space Sciences, University of California, Los Angeles, CA 90024, USA. |
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Abstract: | Temperatures in Jupiter's atmosphere derived from Galileo Probe deceleration data increase from 109 kelvin at the 175-millibar level to 900 ± 40 kelvin at 1 nanobar, consistent with Voyager remote sensing data. Wavelike oscillations are present at all levels. Vertical wavelengths are 10 to 25 kilometers in the deep isothermal layer, which extends from 12 to 0.003 millibars. Above the 0.003-millibar level, only 90- to 270- kilometer vertical wavelengths survive, suggesting dissipation of wave energy as the probable source of upper atmosphere heating. |
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