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First Seasonal Study of Optical Turbulence with an Atmospheric Model

We present the first complete seasonal variation study extended over 1 year, of all the principal astroclimatic parameters above the San Pedro Mártir Observatory, simulated with an atmospheric model, Meso‐Nh. The model was run in an autonomous way to simulate C2N and wind speed vertical profiles (∼20 km) related to the 80 nights after it was calibrated with the aid of a set of measured C2N profiles. All the integrated parameters are calculated using two basic parameters: C2N(h) and V(h). Simulations match measurements within a dispersion of a few percent. Correlations between meteorological and astroclimatic parameters are discussed, and general seasonal trends are presented as evidence. The potential of numerical simulations as a new tool for the climatological analysis of optical turbulence above astronomical sites is discussed.