The unstable CO2 feedback cycle on ocean planets
| Autor: | John Lee Grenfell, Heike Rauer, Barbara Stracke, M. Godolt, Kevin Heng, P. von Paris, Daniel Kitzmann, A. B. C. Patzer, Yann Alibert |
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| Přispěvatelé: | Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), Laboratoire d'astrophysique de l'observatoire de Besançon (UMR 6091) (LAOB), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Nottingham Transportation Engineering Centre, University of Nottingham, UK (UON), Center for Space and Habitability (CSH), University of Bern, Institut für Optik und Atomare Physik, Technische Universität Berlin (TU), DLR Institut für Planetenforschung, Deutsches Zentrum für Luft- und Raumfahrt [Berlin] (DLR), ECLIPSE 2015, Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Technical University of Berlin / Technische Universität Berlin (TU), Pomies, Marie-Paule |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Solar System
530 Physics planets and satellites: oceans [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [SDU.ASTR.EP] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] FOS: Physical sciences Atmospheric sciences Astrobiology Physics::Geophysics planets and satellites: terrestrial planets Atmosphere Planet Ocean planet Physics::Atmospheric and Oceanic Physics planets and satellites: atmospheres Earth and Planetary Astrophysics (astro-ph.EP) Physics Carbon dioxide in Earth's atmosphere Planetary surface 520 Astronomy Astronomy and Astrophysics Exoplanet Atmosphere of Earth 13. Climate action Space and Planetary Science Astrophysics::Earth and Planetary Astrophysics astrobiology Astrophysics - Earth and Planetary Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2015, 452 (4), pp.3752-3758. ⟨10.1093/mnras/stv1487⟩ Monthly Notices of the Royal Astronomical Society, 2015, 452 (4), pp.3752-3758. ⟨10.1093/mnras/stv1487⟩ American Astronomical Society, ESS meeting #3, #500.04. BAAS volume 47 #6, November 2015. Held in HawaÏ 29-11 au 04-12-2015 American Astronomical Society, ESS meeting #3, #500.04. BAAS volume 47 #6, November 2015. Held in HawaÏ 29-11 au 04-12-2015, Nov 2015, HawaÏ United States MNRAS Kitzmann, D.; Alibert, Yann; Godolt, M.; Grenfell, J. L.; Heng, K.; Patzer, A. B. C.; Rauer, H.; Stracke, B.; von Paris, P. (2015). The unstable CO2 feedback cycle on ocean planets. Monthly notices of the Royal Astronomical Society, 452(4), pp. 3752-3758. Oxford University Press 10.1093/mnras/stv1487 |
| ISSN: | 0035-8711 1365-2966 |
| Popis: | Ocean planets are volatile rich planets, not present in our Solar System, which are thought to be dominated by deep, global oceans. This results in the formation of high-pressure water ice, separating the planetary crust from the liquid ocean and, thus, also from the atmosphere. Therefore, instead of a carbonate-silicate cycle like on the Earth, the atmospheric carbon dioxide concentration is governed by the capability of the ocean to dissolve carbon dioxide (CO2). In our study, we focus on the CO2 cycle between the atmosphere and the ocean which determines the atmospheric CO2 content. The atmospheric amount of CO2 is a fundamental quantity for assessing the potential habitability of the planet's surface because of its strong greenhouse effect, which determines the planetary surface temperature to a large degree. In contrast to the stabilising carbonate-silicate cycle regulating the long-term CO2 inventory of the Earth atmosphere, we find that the CO2 cycle feedback on ocean planets is negative and has strong destabilising effects on the planetary climate. By using a chemistry model for oceanic CO2 dissolution and an atmospheric model for exoplanets, we show that the CO2 feedback cycle can severely limit the extension of the habitable zone for ocean planets. fixed problems in Fig. 3 |
| Databáze: | OpenAIRE |
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