On August 30, 2005 11:59 pm, RtX wrote: > Could someone elighten me on the --enable-real-weather-fetch option. > How does it work? At what intervals does it download weather? Could > this be the reason why sometimes in the sim, my aircraft will > drastically shake moreso than I would expect turbulence to work? Will > it generate rain / snow? > > Thank you all. > -- > RtX...
I do not know exactly how the weather fetch system work, but basically, the system requests a server for METAR info and uses server's replies to adjust the weather in the sim. The weather fetch system request data from the server every five minutes. However, the actual age of the data can be as old as a few hours. Thus, if a three hours old METAR data on the server just got updated, the weather in FlightGear would turn from good to stormy weather instantaneously during the next weather fetch. As to your question regarding the drastic shaking motion, that is most probably due to sudden changes in enivornment variables during weather fetches. To my understanding, the weather fetch system only downloads the METAR info for the cloest METAR station to your position. Thus, when moving from airport A to airport B, the METAR info from airport A will remain with you until the next weather fetch, even if you have reached airport B already. It would be better, of course, if the weather fetch system would download the METAR data for all the surrourding METAR stations; because this would allow the enivornment variables can change gradually as one moves from one location to another. Ampere _______________________________________________ Flightgear-users mailing list Flightgear-users@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-users 2f585eeea02e2c79d7b1d8c4963bae2d
