Volume 376, Number 2, September II 2001
|Page(s)||727 - 734|
|Section||Numerical methods and codes|
|Published online||15 September 2001|
Improvements in the optical turbulence parameterization for 3D simulations in a region around a telescope
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apartado Postal 70-264, 04510 México D.F. México
2 Centre National des Recherches Météorologiques, Météo France, 42 avenue G. Coriolis 31057 Toulouse, France
Corresponding author: E. Masciadri, email@example.com
Accepted: 1 June 2001
In preceding papers we have presented comparisons between simulated and measured profiles above two of the best astronomical sites: Cerro Paranal (Chile) (Masciadri et al. [CITE]; Masciadri et al. [CITE]) and Roque de los Muchachos (Canary Islands) (Masciadri et al. [CITE]). These works aimed at validating the atmospheric model Meso-Nh which was conceived to simulate classical atmospheric parameters and was then adapted to simulate optical turbulence (3D maps of ). Good results were obtained but further improvements can be made. One of the principal limitations is the statistical reliability of the model that is, at the present time, not very high. In this paper we present some modifications introduced in the optical turbulence parameterization of the model that aim to reduce some systematic errors. Preliminary results, obtained comparing the simulations with measurements taken at the San Pedro Mártir site (Mexico) in March-April 1997, show that we are now able to obtain a better qualitative and quantitative estimate of the profiles. Finally, we show how we have been able to improve the spatiotemporal variability of the model.
Key words: atmospheric effects / methods: numerical
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.