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225 GHz Atmospheric Opacity Measurements from Two Arctic Sites

Published online by Cambridge University Press:  30 January 2013

S. Matsushita ,
Ming-Tang Chen ,
P. Martin-Cocher ,
K. Asada ,
C.-P. Chen ,
M. Inoue ,
S. Paine ,
D. Turner  and
E. Steinbring
S. Matsushita
Affiliation:
Institute of Astronomy and Astrophysics, Academia Sinica, P.O.Box 23-141, Taipei 10617, Taiwan, R.O.C. email: [email protected]
Ming-Tang Chen
Affiliation:
Institute of Astronomy and Astrophysics, Academia Sinica, P.O.Box 23-141, Taipei 10617, Taiwan, R.O.C. email: [email protected]
P. Martin-Cocher
Affiliation:
Institute of Astronomy and Astrophysics, Academia Sinica, P.O.Box 23-141, Taipei 10617, Taiwan, R.O.C. email: [email protected]
K. Asada
Affiliation:
Institute of Astronomy and Astrophysics, Academia Sinica, P.O.Box 23-141, Taipei 10617, Taiwan, R.O.C. email: [email protected]
C.-P. Chen
Affiliation:
Institute of Astronomy and Astrophysics, Academia Sinica, P.O.Box 23-141, Taipei 10617, Taiwan, R.O.C. email: [email protected]
M. Inoue
Affiliation:
Institute of Astronomy and Astrophysics, Academia Sinica, P.O.Box 23-141, Taipei 10617, Taiwan, R.O.C. email: [email protected]
S. Paine
Affiliation:
Smithsonian Astrophysical Observatory, 160 Concord Ave., Cambridge, MA 02138, USA
D. Turner
Affiliation:
National Severe Storms Laboratory, 120 David L. Boren Boulevard, Norman, OK, 73072, USA
E. Steinbring
Affiliation:
National Research Council, Herzberg Inst of Astrophysics, 5071 W Saanich Rd, CA Victoria BC V9E 2E7, Canada
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Abstract

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We report the latest results of 225 GHz atmospheric opacity measurements from two Arctic sites; one on high coastal terrain near the Eureka weather station, on Ellesmere Island, Canada, and the other at the Summit Station near the peak of the Greenland icecap. This is a campaign to search for a site to deploy a new telescope for submillimeter Very Long Baseline Interferometry and THz astronomy in the northern hemisphere. Since 2011, we have obtained 3 months of winter data near Eureka, and about one year of data at Summit Station. The results indicate that these sites offer a highly transparent atmosphere for observations in submillimeter wavelengths. Summit Station is particularly excellent, and its zenith opacity at 225 GHz is statistically similar to the Atacama Large Milllimeter/submillimeter Array site in Chile. In winter, the opacity at Summit Station is even comparable to that observed at the South Pole.

Keywords

Arctic sites225 GHz opacitysite testing
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S288: Astrophysics from Antarctica , August 2012 , pp. 204 - 207
Copyright
Copyright © International Astronomical Union 2013

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