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Advanced weather

81 bytes added, 13:21, 16 August 2012
Environment related
* expose the atmospheric model to the property tree (or Nasal) [http://www.flightgear.org/forums/viewtopic.php?f=30&t=8743#p86387] [http://www.flightgear.org/forums/viewtopic.php?f=5&t=7358&st=0&sk=t&sd=a&start=15#p70714] [http://www.av8n.com/fly/fgfs/README.altimetry.html] [http://www.av8n.com/physics/altimetry.htm]
* Once I cross the mountaintops, some system switches on turbulence (I suspect ridge lift, since I could not find any other property which would create turbulence). That's bad, because wave lift isn't turbulent at all.To disable the ridge lift system, set '''/environment/ridge-lift/enabled''' to 0
* calls to set the environment (temperature, visibility, turbulence, pressure, dewpoint, thermal lift). It would seem a good idea if the environment subsystem could be structured in such a way as to accept direct input from Nasal via the property tree (and switches its own interpolation routines off) if a particular property is set.

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