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Thermal Infrared Emission Spectra of Terrestrial Exoplanets Influenced by Multi-layer Clouds

Schreier, Franz and Vasquez, Mayte and Gimeno Garcia, Sebastian and Kitzmann, Daniel (2016) Thermal Infrared Emission Spectra of Terrestrial Exoplanets Influenced by Multi-layer Clouds. In: Geophysical Research Abstracts, 18. EGU General Assembly 2016, 17 - 22 April 2016, Vienna, Austria.

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Official URL: http://meetingorganizer.copernicus.org/EGU2016/EGU2016-6985-1.pdf


Clouds play an important role in the radiative transfer of planetary atmospheres: they are key elements of the climate system and influence the planet’s spectral appearance. Given the thousands of exoplanets discovered so far, including some dozens of Earth-sized exoplanets, the feasibility of remote sensing of exoplanet atmospheres is attracting increasing attention. Here we present a study of the thermal emission of cloud-covered Earth-like exoplanets orbiting in the habitable zone of F, G, K, and M-type stars. A line-by-line model for molecular absorption has been coupled to a discrete ordinate multiple scattering radiative transfer solver. Pressure, temperature, and molecular concentration profiles were taken from a consistent radiative-convective climate model including a parameterized cloud description (Kitzmann et al., A&A, 2010). The main focus of the current work is the impact of multi-layer clouds on emission spectra in the thermal infrared. The effects of low-level water clouds and high level ice clouds simultaneously on signatures of H2 O, CO2 , O3 , etc will be studied for various resolutions. Furthermore, comparisons with spectra resulting from a low-resolution code will be shown.

Item URL in elib:https://elib.dlr.de/103524/
Document Type:Conference or Workshop Item (Poster)
Additional Information:Vol. 18, EGU2016-6985-1, 2016 EGU General Assembly 2016 © Author(s) 2016. CC Attribution 3.0 License.
Title:Thermal Infrared Emission Spectra of Terrestrial Exoplanets Influenced by Multi-layer Clouds
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schreier, Franzfranz.schreier (at) dlr.deUNSPECIFIED
Vasquez, Maytemayte.vazquez (at) dlr.deUNSPECIFIED
Gimeno Garcia, Sebastiansebastian.gimenogarcia (at) dlr.deUNSPECIFIED
Kitzmann, Danieldaniel.kitzmann (at) csh.unibe.chUNSPECIFIED
Date:April 2016
Journal or Publication Title:Geophysical Research Abstracts
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Atmospheric remote sensing, Molecular absorption, Thermal infrared Clouds
Event Title:EGU General Assembly 2016
Event Location:Vienna, Austria
Event Type:international Conference
Event Dates:17 - 22 April 2016
Organizer:European Geosciences Union
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Vorhaben Spektrometrische Verfahren und Konzepte der Fernerkundung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Schreier, Dr.rer.nat. Franz
Deposited On:22 Mar 2016 09:36
Last Modified:31 Jul 2019 20:00

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