Revisiting the Scattering Greenhouse Effect of CO2 Ice Clouds

Kitzmann, Daniel (2016). Revisiting the Scattering Greenhouse Effect of CO2 Ice Clouds. Astrophysical Journal Letters, 817(2), L18. Institute of Physics Publishing IOP 10.3847/2041-8205/817/2/L18

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Carbon dioxide ice clouds are thought to play an important role for cold terrestrial planets with thick CO2 dominated atmospheres. Various previous studies showed that a scattering greenhouse effect by carbon dioxide ice clouds could result in a massive warming of the planetary surface. However, all of these studies only employed simplified two-stream radiative transfer schemes to describe the anisotropic scattering. Using accurate radiative transfer models with a general discrete ordinate method, this study revisits this important effect and shows that the positive climatic impact of carbon dioxide clouds was strongly overestimated in the past. The revised scattering greenhouse effect can have important implications for the early Mars, but also for planets like the early Earth or the position of the outer boundary of the habitable zone.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences > Theoretical Astrophysics and Planetary Science (TAPS)
10 Strategic Research Centers > Center for Space and Habitability (CSH)

UniBE Contributor:

Kitzmann, Daniel

Subjects:

500 Science > 520 Astronomy

ISSN:

2041-8205

Publisher:

Institute of Physics Publishing IOP

Language:

English

Submitter:

Daniel Kitzmann

Date Deposited:

13 Sep 2016 09:42

Last Modified:

13 Sep 2016 09:42

Publisher DOI:

10.3847/2041-8205/817/2/L18

ArXiv ID:

1601.01209

BORIS DOI:

10.7892/boris.87727

URI:

https://boris.unibe.ch/id/eprint/87727

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