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Sökning: id:"swepub:oai:DiVA.org:uu-495901" > The TRAPPIST-1 Habi...

The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). III. Simulated Observables-the Return of the Spectrum

Fauchez, Thomas J. (författare)
NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA.;Univ Space Res Assoc USRA, Goddard Earth Sci Technol & Res GESTAR, Columbia, MD 21046 USA.;Amer Univ, Coll Arts & Sci, Washington, DC 20016 USA.;NASA, GSFC Sellers Exoplanet Environm Collaborat, Greenbelt, MD 20771 USA.
Villanueva, Geronimo L. (författare)
NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA.
Sergeev, Denis E. (författare)
Univ Exeter, Coll Engn Math & Phys Sci, Dept Math, Exeter EX4 4QF, England.
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Turbet, Martin (författare)
Univ Geneva, Observ Astron, Chemin Maillettes 51, CH-1290 Versoix, Switzerland.;PSL Res Univ, Sorbonne Univ, Ecole Normale Super, Ecole Polytech,Lab Metrorol Dynam,IPSL,CNRS, F-75005 Paris, France.
Boutle, Ian A. (författare)
Met Off, FitzRoy Rd, Exeter EX1 3PB, England.;Univ Exeter, Coll Engn Math & Phys Sci, Dept Astrophys, Exeter EX4 4QL, England.
Tsigaridis, Kostas (författare)
Columbia Univ, Ctr Climate Syst Res, New York, NY 10025 USA.;NASA, Goddard Inst Space Studies, 2880 Broadway, New York, NY 10025 USA.
Way, Michael J. (författare)
Uppsala universitet,Teoretisk astrofysik,NASA, GSFC Sellers Exoplanet Environm Collaborat, Greenbelt, MD 20771 USA.;NASA, Goddard Inst Space Studies, 2880 Broadway, New York, NY 10025 USA
Wolf, Eric T. (författare)
NASA, GSFC Sellers Exoplanet Environm Collaborat, Greenbelt, MD 20771 USA.;Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80303 USA.
Domagal-Goldman, Shawn D. (författare)
NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA.;NASA, GSFC Sellers Exoplanet Environm Collaborat, Greenbelt, MD 20771 USA.;NASA, NExSS Virtual Planetary Lab, Seattle, WA 98195 USA.
Forget, Francois (författare)
PSL Res Univ, Sorbonne Univ, Ecole Normale Super, Ecole Polytech,Lab Metrorol Dynam,IPSL,CNRS, F-75005 Paris, France.
Haqq-Misra, Jacob (författare)
NASA, NExSS Virtual Planetary Lab, Seattle, WA 98195 USA.;Blue Marble Space Inst Sci, Seattle, WA 98104 USA.
Kopparapu, Ravi K. (författare)
NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA.;NASA, GSFC Sellers Exoplanet Environm Collaborat, Greenbelt, MD 20771 USA.;NASA, NExSS Virtual Planetary Lab, Seattle, WA 98195 USA.
Manners, James (författare)
Met Off, FitzRoy Rd, Exeter EX1 3PB, England.
Mayne, Nathan J. (författare)
Univ Exeter, Coll Engn Math & Phys Sci, Dept Astrophys, Exeter EX4 4QL, England.
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NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA;Univ Space Res Assoc USRA, Goddard Earth Sci Technol & Res GESTAR, Columbia, MD 21046 USA.;Amer Univ, Coll Arts & Sci, Washington, DC 20016 USA.;NASA, GSFC Sellers Exoplanet Environm Collaborat, Greenbelt, MD 20771 USA. NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA. (creator_code:org_t)
Institute of Physics Publishing (IOPP), 2022
2022
Engelska.
Ingår i: The Planetary Science Journal. - : Institute of Physics Publishing (IOPP). - 2632-3338. ; 3:9
Relaterad länk:
https://doi.org/10.3...
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https://uu.diva-port... (primary) (Raw object)
https://urn.kb.se/re...
https://doi.org/10.3...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI) is a community project that aims to quantify how differences in general circulation models (GCMs) could impact the climate prediction for TRAPPIST-1e and, subsequently, its atmospheric characterization in transit. Four GCMs have participated in THAI: ExoCAM, LMD-Generic, ROCKE-3D, and the UM. This paper, focused on the simulated observations, is the third part of a trilogy, following the analysis of two land planet scenarios (Part I) and two aquaplanet scenarios (Part II). Here we show a robust agreement between the simulated spectra and the number of transits estimated to detect the land planet atmospheres. For the cloudy aquaplanet ones, a 5 sigma detection of CO2 could be achieved in about 10 transits if the atmosphere contains at least 1 bar of CO2. That number can vary by 41%-56% depending on the GCM used to predict the terminator profiles, principally due to differences in the cloud deck altitude, with ExoCAM and LMD-G producing higher clouds than ROCKE-3D and UM. Therefore, for the first time, this work provides "GCM uncertainty error bars" of similar to 50% that need to be considered in future analyses of transmission spectra. We also analyzed the intertransit spectral variability. Its magnitude differs significantly between the GCMs, but its impact on the transmission spectra is within the measurement uncertainties. THAI has demonstrated the importance of model intercomparison for exoplanets and also paved the way for a larger project to develop an intercomparison meta-framework, namely, the Climates Using Interactive Suites of Intercomparisons Nested for Exoplanet Studies.

Ämnesord

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

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