High altitude wind velocity at Sierra Negra and San Pedro Mártir

Details High altitude wind velocity at Sierra Negra and San Pedro Mártir High altitude wind velocity at Sierra Negra and San Pedro Mártir

2004-12-20

arxiv.org/abs/astro-ph/0412528v1

Astronomy and Astrophysics

Astrophysics

Accepted for publication in PASP; 14 pages, 6 tables, 2 figures

Scientific paper

10.1086/427736

It has been proposed that the global circulation of the atmosphere winds at 200 mb can be used as a criteria to establish the suitability of a site for the development of adaptive optics techniques such as slow wavefront corrugation correction. By using the NOAA NCEP/NCAR Reanalysis data base we analyze the monthly average wind velocity at 200 mb for a 16 year period, for two sites in Mexico: Sierra Negra and San Pedro M\'artir. We compare the results with those obtained for Mauna Kea, Paranal and La Silla, with Maidanak in Uzbekistan, and with Gamsberg in Namibia. We show that for all the sites under study there is a yearly wind speed modulation and we model that modulation. Our results show that Sierra Negra and San Pedro M\'artir are comparable with the best observatory sites as Mauna Kea and are amongst the most advantageous sites to apply adaptive optics techniques.

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