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Paper: Influence of Clouds on the Emission Spectra of Earth-like Extrasolar Planets
Volume: 430, Pathways Towards Habitable Planets
Page: 475
Authors: Kitzmann, D.; Patzer, A. B. C.; von Paris, P; Godolt, M.; Grenfell, J. L.; Rauer, H.
Abstract: The climate of Earth-like planets results from the energy balance between absorbed starlight and radiative losses of heat from the surface and atmosphere to space. Clouds reflect sunlight back towards space, reducing the stellar energy available for heating the atmosphere (albedo effect), but also reduce radiative losses to space (greenhouse effect). Clouds also have a large effect on the emission spectra of planetary atmospheres, by either concealing the thermal emission from the surface or dampening the spectral features of molecules, which is, of course, also true for biomarkers (e.g., N2O and O3). We present first results on the impact of multi-layered clouds in the atmospheres of Earth-like extrasolar planets orbiting different types of central stars on the planetary IR emission spectra.
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