Assessments of Ali, Dome A, and Summit Camp for Mm-wave Observations Using MERRA-2 Reanalysis
The latest MERRA-2 reanalysis of the modern satellite measurements provides unprecedented uniformity and fidelity for the atmospheric data. In this paper, these data are used to evaluate five sites for millimeter-wave (mm-wave) observations. These include two established sites (South Pole and Chajna...
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ftdatacite:10.48550/arxiv.1707.08400 2023-05-15T13:55:23+02:00 Assessments of Ali, Dome A, and Summit Camp for Mm-wave Observations Using MERRA-2 Reanalysis Kuo, Chao-Lin 2017 https://dx.doi.org/10.48550/arxiv.1707.08400 https://arxiv.org/abs/1707.08400 unknown arXiv https://dx.doi.org/10.3847/1538-4357/aa8b74 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Instrumentation and Methods for Astrophysics astro-ph.IM Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences article-journal Article ScholarlyArticle Text 2017 ftdatacite https://doi.org/10.48550/arxiv.1707.08400 https://doi.org/10.3847/1538-4357/aa8b74 2022-04-01T10:26:37Z The latest MERRA-2 reanalysis of the modern satellite measurements provides unprecedented uniformity and fidelity for the atmospheric data. In this paper, these data are used to evaluate five sites for millimeter-wave (mm-wave) observations. These include two established sites (South Pole and Chajnantor, Atacama), and three new sites (Ali, Tibet; Dome A, Antarctica; and Summit Camp, Greenland). Atmospheric properties including precipitable water vapor (PWV), sky brightness temperature fluctuations, ice and liquid water paths are derived and compared. Dome A emerges to be the best among those evaluated, with PWV and fluctuations smaller than the second-best site, South Pole, by more than a factor of 2. It is found that the higher site in Ali (6,100 m) is on par with Cerro Chajnantor (5,612 m) in terms of transmission and stability. The lower site in Ali (5,250 m) planned for first stage of observations at 90/150GHz provides conditions comparable to those on the Chajnantor Plateau. These analyses confirm Ali to be an excellent mm-wave site on the Northern Hemisphere that will complement well-established sites on the Southern Hemisphere. It is also found in this analysis that the observing conditions at Summit Camp are comparable to Cerro Chajnantor. Although it is more affected by the presence of liquid water clouds. : 14 pages, 8 figures Text Antarc* Antarctica Greenland South pole South pole DataCite Metadata Store (German National Library of Science and Technology) Greenland Merra ENVELOPE(12.615,12.615,65.816,65.816) South Pole Summit Camp ENVELOPE(-38.453,-38.453,72.579,72.579) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
Instrumentation and Methods for Astrophysics astro-ph.IM Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences |
spellingShingle |
Instrumentation and Methods for Astrophysics astro-ph.IM Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences Kuo, Chao-Lin Assessments of Ali, Dome A, and Summit Camp for Mm-wave Observations Using MERRA-2 Reanalysis |
topic_facet |
Instrumentation and Methods for Astrophysics astro-ph.IM Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences |
description |
The latest MERRA-2 reanalysis of the modern satellite measurements provides unprecedented uniformity and fidelity for the atmospheric data. In this paper, these data are used to evaluate five sites for millimeter-wave (mm-wave) observations. These include two established sites (South Pole and Chajnantor, Atacama), and three new sites (Ali, Tibet; Dome A, Antarctica; and Summit Camp, Greenland). Atmospheric properties including precipitable water vapor (PWV), sky brightness temperature fluctuations, ice and liquid water paths are derived and compared. Dome A emerges to be the best among those evaluated, with PWV and fluctuations smaller than the second-best site, South Pole, by more than a factor of 2. It is found that the higher site in Ali (6,100 m) is on par with Cerro Chajnantor (5,612 m) in terms of transmission and stability. The lower site in Ali (5,250 m) planned for first stage of observations at 90/150GHz provides conditions comparable to those on the Chajnantor Plateau. These analyses confirm Ali to be an excellent mm-wave site on the Northern Hemisphere that will complement well-established sites on the Southern Hemisphere. It is also found in this analysis that the observing conditions at Summit Camp are comparable to Cerro Chajnantor. Although it is more affected by the presence of liquid water clouds. : 14 pages, 8 figures |
format |
Text |
author |
Kuo, Chao-Lin |
author_facet |
Kuo, Chao-Lin |
author_sort |
Kuo, Chao-Lin |
title |
Assessments of Ali, Dome A, and Summit Camp for Mm-wave Observations Using MERRA-2 Reanalysis |
title_short |
Assessments of Ali, Dome A, and Summit Camp for Mm-wave Observations Using MERRA-2 Reanalysis |
title_full |
Assessments of Ali, Dome A, and Summit Camp for Mm-wave Observations Using MERRA-2 Reanalysis |
title_fullStr |
Assessments of Ali, Dome A, and Summit Camp for Mm-wave Observations Using MERRA-2 Reanalysis |
title_full_unstemmed |
Assessments of Ali, Dome A, and Summit Camp for Mm-wave Observations Using MERRA-2 Reanalysis |
title_sort |
assessments of ali, dome a, and summit camp for mm-wave observations using merra-2 reanalysis |
publisher |
arXiv |
publishDate |
2017 |
url |
https://dx.doi.org/10.48550/arxiv.1707.08400 https://arxiv.org/abs/1707.08400 |
long_lat |
ENVELOPE(12.615,12.615,65.816,65.816) ENVELOPE(-38.453,-38.453,72.579,72.579) |
geographic |
Greenland Merra South Pole Summit Camp |
geographic_facet |
Greenland Merra South Pole Summit Camp |
genre |
Antarc* Antarctica Greenland South pole South pole |
genre_facet |
Antarc* Antarctica Greenland South pole South pole |
op_relation |
https://dx.doi.org/10.3847/1538-4357/aa8b74 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1707.08400 https://doi.org/10.3847/1538-4357/aa8b74 |
_version_ |
1766261995513839616 |