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3D Radiative Transfer for Exoplanet Atmospheres. gCMCRT : A GPU-accelerated MCRT Code

Lee, Elspeth K.H. ; Wardenier, Joost P. ; Prinoth, Bibiana LU orcid ; Parmentier, Vivien ; Grimm, Simon L. ; Baeyens, Robin ; Carone, Ludmila ; Christie, Duncan ; Deitrick, Russell and Kitzmann, Daniel , et al. (2022) In Astrophysical Journal 929(2).
Abstract

Radiative transfer (RT) is a key component for investigating atmospheres of planetary bodies. With the 3D nature of exoplanet atmospheres being important in giving rise to their observable properties, accurate and fast 3D methods are required to be developed to meet future multidimensional and temporal data sets. We develop an open-source GPU RT code, gCMCRT, a Monte Carlo RT forward model for general use in planetary atmosphere RT problems. We aim to automate the post-processing pipeline, starting from direct global circulation model (GCM) output to synthetic spectra. We develop albedo, emission, and transmission spectra modes for 3D and 1D input structures. We include capability to use correlated-k and high-resolution opacity tables,... (More)

Radiative transfer (RT) is a key component for investigating atmospheres of planetary bodies. With the 3D nature of exoplanet atmospheres being important in giving rise to their observable properties, accurate and fast 3D methods are required to be developed to meet future multidimensional and temporal data sets. We develop an open-source GPU RT code, gCMCRT, a Monte Carlo RT forward model for general use in planetary atmosphere RT problems. We aim to automate the post-processing pipeline, starting from direct global circulation model (GCM) output to synthetic spectra. We develop albedo, emission, and transmission spectra modes for 3D and 1D input structures. We include capability to use correlated-k and high-resolution opacity tables, the latter of which can be Doppler-shifted inside the model. We post-process results from several GCM groups, including ExoRad, SPARC/MITgcm THOR, UK Met Office UM, Exo-FMS, and the Rauscher model. Users can therefore take advantage of desktop and HPC GPU computing solutions. gCMCRT is well suited for post-processing large GCM model grids produced by members of the community and for high-resolution 3D investigations.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Astrophysical Journal
volume
929
issue
2
article number
180
publisher
American Astronomical Society
external identifiers
  • scopus:85130012942
ISSN
0004-637X
DOI
10.3847/1538-4357/ac61d6
language
English
LU publication?
yes
id
bac0133b-01bc-43bc-a7e7-0b77d2db2c82
date added to LUP
2022-09-02 15:35:25
date last changed
2024-04-17 13:52:31
@article{bac0133b-01bc-43bc-a7e7-0b77d2db2c82,
  abstract     = {{<p>Radiative transfer (RT) is a key component for investigating atmospheres of planetary bodies. With the 3D nature of exoplanet atmospheres being important in giving rise to their observable properties, accurate and fast 3D methods are required to be developed to meet future multidimensional and temporal data sets. We develop an open-source GPU RT code, gCMCRT, a Monte Carlo RT forward model for general use in planetary atmosphere RT problems. We aim to automate the post-processing pipeline, starting from direct global circulation model (GCM) output to synthetic spectra. We develop albedo, emission, and transmission spectra modes for 3D and 1D input structures. We include capability to use correlated-k and high-resolution opacity tables, the latter of which can be Doppler-shifted inside the model. We post-process results from several GCM groups, including ExoRad, SPARC/MITgcm THOR, UK Met Office UM, Exo-FMS, and the Rauscher model. Users can therefore take advantage of desktop and HPC GPU computing solutions. gCMCRT is well suited for post-processing large GCM model grids produced by members of the community and for high-resolution 3D investigations. </p>}},
  author       = {{Lee, Elspeth K.H. and Wardenier, Joost P. and Prinoth, Bibiana and Parmentier, Vivien and Grimm, Simon L. and Baeyens, Robin and Carone, Ludmila and Christie, Duncan and Deitrick, Russell and Kitzmann, Daniel and Mayne, Nathan and Roman, Michael and Thorsbro, Brian}},
  issn         = {{0004-637X}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{2}},
  publisher    = {{American Astronomical Society}},
  series       = {{Astrophysical Journal}},
  title        = {{3D Radiative Transfer for Exoplanet Atmospheres. gCMCRT : A GPU-accelerated MCRT Code}},
  url          = {{http://dx.doi.org/10.3847/1538-4357/ac61d6}},
  doi          = {{10.3847/1538-4357/ac61d6}},
  volume       = {{929}},
  year         = {{2022}},
}