Mesoscale Optical Turbulence simulations at Dome C
These last years ground-based astronomy has been looking towards Antarctica, especially its summits and the internal continental plateau where the optical turbulence (OT) appears to be confined in a shallow layer close to the surface. Preliminary measurements have so far indicated pretty good value...
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ftdatacite:10.48550/arxiv.0906.0129 2023-05-15T13:32:35+02:00 Mesoscale Optical Turbulence simulations at Dome C Lascaux, F. Masciadri, E. Hagelin, S. Stoesz, J. 2009 https://dx.doi.org/10.48550/arxiv.0906.0129 https://arxiv.org/abs/0906.0129 unknown arXiv https://dx.doi.org/10.1111/j.1365-2966.2009.15151.x arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Instrumentation and Methods for Astrophysics astro-ph.IM Atmospheric and Oceanic Physics physics.ao-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 2009 ftdatacite https://doi.org/10.48550/arxiv.0906.0129 https://doi.org/10.1111/j.1365-2966.2009.15151.x 2022-04-01T14:50:03Z These last years ground-based astronomy has been looking towards Antarctica, especially its summits and the internal continental plateau where the optical turbulence (OT) appears to be confined in a shallow layer close to the surface. Preliminary measurements have so far indicated pretty good value for the seeing above 30-35 m: 0.36" (Agabi et al. 2006), 0.27" (Lawrence et al. 2004) and 0.3" (Trinquet et al. 2008) at Dome C. Site testing campaigns are however extremely expensive, instruments provide only local measurements and atmospheric modeling might represent a step ahead towards the search and selection of astronomical sites thanks to the possibility to reconstruct 3D Cn2 maps over a surface of several kilometers. The Antarctic Plateau represents therefore an important benchmark test to evaluate the possibility to discriminate sites on the same plateau. Our group (Hagelin et al. 2008) has proven that the analyses from the ECMWF global model do not describe with the required accuracy the antarctic boundary and surface layers in the plateau. A better description could be obtained with a mesoscale model. The Meso-Nh model has proven to be reliable in reproducing 3D maps of OT above mid-latitude astronomical sites (Masciadri et al. 1999ab, 2004, Masciadri and Jabouille 2005). In this paper we study the ability of the Meso-Nh model in reconstructing the meteorological parameters as well as the OT above Dome C with different model configurations. We concentrate our attention on the model abilities in reproducing the OT surface layer thickness Hsl and the integral of the Cn2 in the free atmosphere and in the surface layer. It is worth to highlight that these are the first estimates ever done so far with a mesoscale model of the optical turbulence above the internal Antarctic Plateau. : 13 pages, 8 figures, accepted for publication in MNRAS Text Antarc* Antarctic Antarctica DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic |
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DataCite Metadata Store (German National Library of Science and Technology) |
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language |
unknown |
topic |
Instrumentation and Methods for Astrophysics astro-ph.IM Atmospheric and Oceanic Physics physics.ao-ph FOS Physical sciences |
spellingShingle |
Instrumentation and Methods for Astrophysics astro-ph.IM Atmospheric and Oceanic Physics physics.ao-ph FOS Physical sciences Lascaux, F. Masciadri, E. Hagelin, S. Stoesz, J. Mesoscale Optical Turbulence simulations at Dome C |
topic_facet |
Instrumentation and Methods for Astrophysics astro-ph.IM Atmospheric and Oceanic Physics physics.ao-ph FOS Physical sciences |
description |
These last years ground-based astronomy has been looking towards Antarctica, especially its summits and the internal continental plateau where the optical turbulence (OT) appears to be confined in a shallow layer close to the surface. Preliminary measurements have so far indicated pretty good value for the seeing above 30-35 m: 0.36" (Agabi et al. 2006), 0.27" (Lawrence et al. 2004) and 0.3" (Trinquet et al. 2008) at Dome C. Site testing campaigns are however extremely expensive, instruments provide only local measurements and atmospheric modeling might represent a step ahead towards the search and selection of astronomical sites thanks to the possibility to reconstruct 3D Cn2 maps over a surface of several kilometers. The Antarctic Plateau represents therefore an important benchmark test to evaluate the possibility to discriminate sites on the same plateau. Our group (Hagelin et al. 2008) has proven that the analyses from the ECMWF global model do not describe with the required accuracy the antarctic boundary and surface layers in the plateau. A better description could be obtained with a mesoscale model. The Meso-Nh model has proven to be reliable in reproducing 3D maps of OT above mid-latitude astronomical sites (Masciadri et al. 1999ab, 2004, Masciadri and Jabouille 2005). In this paper we study the ability of the Meso-Nh model in reconstructing the meteorological parameters as well as the OT above Dome C with different model configurations. We concentrate our attention on the model abilities in reproducing the OT surface layer thickness Hsl and the integral of the Cn2 in the free atmosphere and in the surface layer. It is worth to highlight that these are the first estimates ever done so far with a mesoscale model of the optical turbulence above the internal Antarctic Plateau. : 13 pages, 8 figures, accepted for publication in MNRAS |
format |
Text |
author |
Lascaux, F. Masciadri, E. Hagelin, S. Stoesz, J. |
author_facet |
Lascaux, F. Masciadri, E. Hagelin, S. Stoesz, J. |
author_sort |
Lascaux, F. |
title |
Mesoscale Optical Turbulence simulations at Dome C |
title_short |
Mesoscale Optical Turbulence simulations at Dome C |
title_full |
Mesoscale Optical Turbulence simulations at Dome C |
title_fullStr |
Mesoscale Optical Turbulence simulations at Dome C |
title_full_unstemmed |
Mesoscale Optical Turbulence simulations at Dome C |
title_sort |
mesoscale optical turbulence simulations at dome c |
publisher |
arXiv |
publishDate |
2009 |
url |
https://dx.doi.org/10.48550/arxiv.0906.0129 https://arxiv.org/abs/0906.0129 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
https://dx.doi.org/10.1111/j.1365-2966.2009.15151.x |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.0906.0129 https://doi.org/10.1111/j.1365-2966.2009.15151.x |
_version_ |
1766028515713482752 |