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Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2005

An analysis of temperatures and wind speeds above Dome C, Antarctica

Résumé

A good astronomical site must fulfill several criteria including low atmospheric turbulence and low wind speeds. It is therefore important to have a detailed knowledge of the temperature and wind conditions of a location considered for future astronomical research. Antarctica has unique atmospheric conditions that have already been exploited at the South Pole station. Dome C, a site located on a local maximum of the Antarctic plateau, is likely to have even better conditions. In this paper we present the analysis of two decades of wind speed measurements taken at Dome C by an automated weather station (AWS). We also present temperature and wind speed profiles taken over four Antarctic summers using balloon-borne weather sondes. We will show that as well as having one of the lowest average wind speed ever recorded at an existing or potential observatory, Dome C also has an extremely stable upper atmosphere and a very low inversion layer.

Dates et versions

hal-00416906 , version 1 (15-09-2009)

Identifiants

Citer

E. Aristidi, K. Agabi, M. Azouit, E. Fossat, J. Vernin, et al.. An analysis of temperatures and wind speeds above Dome C, Antarctica. Astronomy and Astrophysics - A&A, 2005, 430 (2), pp.739-746. ⟨10.1051/0004-6361:20041876⟩. ⟨hal-00416906⟩
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