Atmospheric transmission at Dome C between 0 and 10 THz
Artikel i vetenskaplig tidskrift, 2010

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

Atmospheric transmissions

Caltech

Antarctica

Time periods

Atacama

Precipitable water vapor

Forward models

Model calculations

Författare

N. Schneider

Centre national de la recherche scientifique (CNRS)

V. Minier

Centre national de la recherche scientifique (CNRS)

G. Durand

Centre national de la recherche scientifique (CNRS)

P., Tremblin

Centre national de la recherche scientifique (CNRS)

Joachim Urban

Chalmers, Institutionen för radio- och rymdvetenskap, Global miljömätteknik och modellering

P. Baron

National Institute for Information

EAS Publications Series

1633-4760 (ISSN) 1638-1963 (eISSN)

Vol. 40 327-332

Ämneskategorier

Geovetenskap och miljövetenskap

DOI

10.1051/eas/1040046

Mer information

Senast uppdaterat

2018-09-07