Re:Weather Model based on ADS-B
by touisteur on Friday August 01, 2025 @07:42PM
(#44763625)
Another fun thing to do is to get mode c (barometric altitude) from aircraft transponders (either SSR or Mode-S downlink 5 or 21 - same physical layer as ADS-B just different bitfield header) and compare it to its GNSS altitude (from ADS-B most of the time) from the same aircraft (the Mode S address used as key) and you can build a map of atmospheric pressures.
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I think you could also infer storm tracks based on pilot deviations they often make following their on-board radar.
If you're lucky to be in an area where a Mode S radar is requesting BDS4,4 you can gather more (sparse) live meteorological data: wind speed/direction, temperature, air pressure, humidity... haven't seen BDS 4,4 requested in a while but maybe someone will enable it in your area...