.. ARIA SIMPAC platform documentation mapdata service file, created by
   simpac@aria.fr 01/2021.

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Meteorological modellings in SIMPAC
===================================

.. Note:: In this section, you may find the list of the possible meteorological modellings.

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Further information on the meteorological modelling by PSWIFT can be found on the :download:`theoretical training material <files/FORMATION_PMSS.pptx>` 
(part 1) and :download:`here <files/FORMATION_PMSS-Suite.pptx>` (part 2). 
PSWIFT is a diagnostic model that imposes mass conservation. 

**PSWIFT model is developed by ARIA Technologies to:**

  - Get, in a short calculation time (couple minutes), a three-dimensional field for wind, temperature, turbulence.
  - Take into account different types of meteorological data available in a same location (wind and / or temperature, from ground-meteorological station or modelling outputs)
  - Take into account topography, land use, obstacles, influence of stability (the effect of thermal stratification on the flows).

**Meteorological modelling starts with the creation of input files:**

  - The tool **Esritoariasite** generates the land use and topography files for the modelled domain and at the resolution chosen.
  - The tool **Shaft** generates the description file of the obstacles. *Buildings are taken into account only if the resolution is lower than 20m.*
  - The tool **Spradsg** is used to generate the meteorological file for an academic modelling or from the meteorological stations. 
    Spradsg analyses the data to determine a Pasquill stability class, and uses it to determine wind's profils and observation stations.
    Spradsg may extrapolate possible missing observation data, until six consecutive hours. 
  - The tool **WRFtoria** is used to generate meteorological file for a simulation from a large scale modelling. The PSWIFT modelling is fed by the meteorological data from vertical profiles in and around the area of interest (two grid point to be added).

    .. important:: The weather forecasts are from a MM5 modelling (generated by the inter-regional platform `ESMERALDA <https://www.esmeralda-web.fr/accueil/index.php>`_, with exclusive use of AASQA), 
       or from a modelling of the entire Southern region of France, by and from AtmoSud with the Weather Research and Forecasting Model (WRF). 
       The two modellings are both fed by meteorological data, freely available `NCEP/ AVN <https://www.weather.gov/ncep/>`_. 

       *Weather forecasts are available for the current day, the next day and the day after that* (and even the next day for the WRF modeling by AtmoSud). 

PSWIFT atmospheric modelling:
  On the SIMPAC platform, the weather outputs are produced every hour. If the field is smaller than 150 km aside, the modelling is imbricated. 
  The bigger field covering an entire region is one kilometer resolution and is used to emphasize the area of interest. The surface wind, as 
  an output, is evaluated at about 7m.