Atmospheric transmission at Dome C between 0 and 10 THz

We present model calculations of the atmospheric transmission for DOME C in Antarctica for frequencies up to 10THz (30 μm) using the forward model MOLIERE-5. Measurements of precipitable water vapor (pwv), obtained by the SUMMIT radiometer installed at the Concordia station during 2008 and working a...

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Bibliographic Details
Published in:EAS Publications Series
Main Authors: Schneider, N., Minier, V., Durand, G., Tremblin, P., Urban, Joachim, Baron, P.
Language:unknown
Published: 2010
Subjects:
Earth and Related Environmental Sciences
Atmospheric transmissions
Caltech
Antarctica
Time periods
Atacama
Precipitable water vapor
Forward models
Model calculations
Concordia Station
Antarc*
Online Access:https://doi.org/10.1051/eas/1040046
https://research.chalmers.se/en/publication/139644
Description
Summary:We present model calculations of the atmospheric transmission for DOME C in Antarctica for frequencies up to 10THz (30 μm) using the forward model MOLIERE-5. Measurements of precipitable water vapor (pwv), obtained by the SUMMIT radiometer installed at the Concordia station during 2008 and working at a wavelength of 200μm, are translated into atmospheric transmission using MOLIERE. Quartiles of transmission, calculated from 200μm data are extrapolated to 350 μm and compared to the CCAT (Cornell-Caltech Atacama Telescope) site in Chile. It turns out that for 25% of the time at DOME C (CCAT), the transmission is around 20% (5%) at 200μm. This corresponds to a pwv of 0.18mm for DOME C. At 350μm, for 50% of time at DOME C (CCAT) the transmission is around 55% (25%). This corresponds to a pwv of 0.22mm for DOME C. These results show that DOME C is one of the best observing sites on Earth for submm-astronomy with respect to high atmospheric transmission over long time periods

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