The water abundance in Jupiter’s equatorial zone

Autor: Michael Janssen, Paul G. Steffes, Fabiano Oyafuso, J. K. Arballo, Shannon Brown, Sidharth Misra, Jonathan I. Lunine, Amoree Hodges, Glenn S. Orton, Zhimeng Zhang, Liming Li, Sushil K. Atreya, Daniel Santos-Costa, Scott Bolton, Hunter Waite, Samuel Gulkis, Steven Levin, Cheng Li, Andrew P. Ingersoll, Tristan Guillot, Michael Allison, Virgil Adumitroaie, Amadeo Bellotti
Přispěvatelé: Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Department of Climate and Space Sciences and Engineering (CLaSP), University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Department of Astronomy [Ithaca], Cornell University [New York], Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Department of Medicine, Cambridge University NHS Foundation Trust, Northwestern University Feinberg School of Medicine, Space Science Division [San Antonio], Southwest Research Institute [San Antonio] (SwRI)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
010504 meteorology & atmospheric sciences
Clathrate hydrate
Galileo Probe
[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]
FOS: Physical sciences
Astrophysics
Protoplanetary disk
01 natural sciences
Latitude
Atmosphere
Jupiter
Abundance (ecology)
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
010303 astronomy & astrophysics
ComputingMilieux_MISCELLANEOUS
Astrophysics::Galaxy Astrophysics
Physics::Atmospheric and Oceanic Physics
0105 earth and related environmental sciences
Physics
Earth and Planetary Astrophysics (astro-ph.EP)
[SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]
Microwave radiometer
Astronomy and Astrophysics
13. Climate action
Physics::Space Physics
Astrophysics::Earth and Planetary Astrophysics
Astrophysics - Earth and Planetary Astrophysics
Zdroj: Nature Astronomy
Nature Astronomy, Nature Publishing Group, 2020, ⟨10.1038/s41550-020-1009-3⟩
ISSN: 2397-3366
DOI: 10.1038/s41550-020-1009-3⟩
Popis: Oxygen is the most common element after hydrogen and helium in Jupiter's atmosphere, and may have been the primary condensable (as water ice) in the protoplanetary disk. Prior to the Juno mission, in situ measurements of Jupiter's water abundance were obtained from the Galileo Probe, which dropped into a meteorologically anomalous site. The findings of the Galileo Probe were inconclusive because the concentration of water was still increasing when the probe died. Here, we initially report on the water abundance in the equatorial region, from 0 to 4 degrees north latitude, based on 1.25 to 22 GHz data from Juno Microwave radiometer probing approximately 0.7 to 30 bars pressure. Because Juno discovered the deep atmosphere to be surprisingly variable as a function of latitude, it remains to confirm whether the equatorial abundance represents Jupiter's global water abundance. The water abundance at the equatorial region is inferred to be $2.5_{-1.6}^{+2.2}\times10^3$ ppm, or $2.7_{-1.7}^{+2.4}$ times the protosolar oxygen elemental ratio to H (1$\sigma$ uncertainties). If reflective of the global water abundance, the result suggests that the planetesimals formed Jupiter are unlikely to be water-rich clathrate hydrates.
Comment: 27 pages, 7 figures
Databáze: OpenAIRE
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