  In this contribution we present the most relevant results obtained in the
context of a feasibility study (MOSE) undertaken for ESO. The principal aim of
the project was to quantify the performances of a mesoscale model
(Astro-Meso-NH code) in forecasting all the main atmospherical parameters
relevant for the ground-based astronomical observations and the optical
turbulence (CN2 and associated integrated astroclimatic parameters) above Cerro
Paranal (site of the VLT) and Cerro Armazones (site of the E-ELT). A detailed
analysis on the score of success of the predictive capacities of the system
have been carried out for all the astroclimatic as well as for the
atmospherical parameters. Considering the excellent results that we obtained,
this study proved the opportunity to implement on these two sites an automatic
system to be run nightly in an operational configuration to support the
scheduling of scientific programs as well as of astronomical facilities
(particularly those supported by AO systems) of the VLT and the E-ELT. At the
end of 2016 a new project for the implementation of a demonstrator of an
operational system to be run on the two ESO's sites will start. Our team is
also responsible for the implementation of a similar automatic system at
Mt.Graham, site of the LBT (ALTA Project). Our system/method will permit
therefore to make a step ahead in the framework of the Service Mode for new
generation telescopes. Among the most exciting achieved results we cite the
fact that we proved to be able to forecast CN2 profiles with a vertical
resolution as high as 150 m. Such a feature is particularly crucial for all
WFAO systems that require such detailed information on the OT vertical
stratification on the whole 20 km above the ground. This important achievement
tells us that all the WFAO systems can rely on automatic systems that are able
to support their optimized use.
