Less absorbed solar energy and more internal heat for Jupiter

Liming Li (), X. Jiang, R. A. West, P. J. Gierasch, S. Perez-Hoyos, A. Sanchez-Lavega, L. N. Fletcher, J. J. Fortney, B. Knowles, C. C. Porco, K. H. Baines, P. M. Fry, A. Mallama, R. K. Achterberg, A. A. Simon, C. A. Nixon, G. S. Orton, U. A. Dyudina, S. P. Ewald and R. W. Schmude
Additional contact information
Liming Li: University of Houston
X. Jiang: University of Houston
R. A. West: California Institute of Technology
P. J. Gierasch: Cornell University
S. Perez-Hoyos: Escuela de Ingenieria UPV/EHU
A. Sanchez-Lavega: Escuela de Ingenieria UPV/EHU
L. N. Fletcher: University of Leicester
J. J. Fortney: University of California
B. Knowles: CICLOPS/Space Science Institute, Boulder
C. C. Porco: CICLOPS/Space Science Institute, Boulder
K. H. Baines: California Institute of Technology
P. M. Fry: University of Wisconsin-Madison
A. Mallama: University of Maryland
R. K. Achterberg: University of Maryland
A. A. Simon: NASA Goddard Space Flight Center
C. A. Nixon: NASA Goddard Space Flight Center
G. S. Orton: California Institute of Technology
U. A. Dyudina: Space Science Institute
S. P. Ewald: Division of Geological and Planetary Sciences, Caltech
R. W. Schmude: Gordon State College

Nature Communications, 2018, vol. 9, issue 1, 1-10

Abstract: Abstract The radiant energy budget and internal heat are fundamental properties of giant planets, but precise determination of these properties remains a challenge. Here, we report measurements of Jupiter’s radiant energy budget and internal heat based on Cassini multi-instrument observations. Our findings reveal that Jupiter’s Bond albedo and internal heat, 0.503 ± 0.012 and 7.485 ± 0.160 W m−2 respectively, are significantly larger than 0.343 ± 0.032 and 5.444 ± 0.425 Wm−2, the previous best estimates. The new results help constrain and improve the current evolutionary theories and models for Jupiter. Furthermore, the significant wavelength dependency of Jupiter’s albedo implies that the radiant energy budgets and internal heat of the other giant planets in our solar system should be re-examined. Finally, the data sets of Jupiter’s characteristics of reflective solar spectral irradiance provide an observational basis for the models of giant exoplanets.

Date: 2018
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DOI: 10.1038/s41467-018-06107-2

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