First ALMA Millimeter-wavelength Maps of Jupiter, with a Multiwavelength Study of Convection
| Autor: | Arielle Moullet, Yasumasa Kasaba, Gordon L. Bjoraker, Leigh N. Fletcher, John H. Rogers, Imke de Pater, E. Villard, Richard Cosentino, David DeBoer, Padraig T. Donnelly, Máté Ádámkovics, Charles Goullaud, Bryan J. Butler, Michael H. Wong, Robert J. Sault, Chris Moeckel, Glenn S. Orton, James Sinclair |
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| Rok vydání: | 2019 |
| Předmět: |
Convection
radio continuum: planetary systems 010504 meteorology & atmospheric sciences FOS: Physical sciences 01 natural sciences Submillimeter Array Latitude Jupiter Atmosphere 0103 physical sciences 010303 astronomy & astrophysics Instrumentation and Methods for Astrophysics (astro-ph.IM) 0105 earth and related environmental sciences Physics planets and satellites: atmospheres Earth and Planetary Astrophysics (astro-ph.EP) Northern Hemisphere Astronomy Astronomy and Astrophysics Plume 13. Climate action Space and Planetary Science radiative transfer techniques: interferometric Tropopause methods: observational Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - Earth and Planetary Astrophysics |
| Zdroj: | The Astronomical Journal Astronomical Journal, 158(4) |
| ISSN: | 1538-3881 1538-3873 0034-4885 0004-6256 |
| DOI: | 10.3847/1538-3881/ab3643 |
| Popis: | We obtained the first maps of Jupiter at 1-3 mm wavelength with the Atacama Large Millimeter/Submillimeter Array (ALMA) on 3-5 January 2017, just days after an energetic eruption at 16.5S jovigraphic latitude had been reported by the amateur community, and about 2-3 months after the detection of similarly energetic eruptions in the northern hemisphere, at 22.2-23.0N. Our observations, probing below the ammonia cloud deck, show that the erupting plumes in the SEB bring up ammonia gas from the deep atmosphere. While models of plume eruptions that are triggered at the water condensation level explain data taken at uv-visible and mid-infrared wavelengths, our ALMA observations provide a crucial, hitherto missing, link in the moist convection theory by showing that ammonia gas from the deep atmosphere is indeed brought up in these plumes. Contemporaneous HST data show that the plumes reach altitudes as high as the tropopause. We suggest that the plumes at 22.2-23.0N also rise up well above the ammonia cloud deck, and that descending air may dry the neighboring belts even more than in quiescent times, which would explain our observations in the north. Comment: 28 pages, 12 figures, 4 tables |
| Databáze: | OpenAIRE |
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