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SignalK / specification

Signal K is a JSON-based format for storing and sharing marine data from different sources (e.g. nmea 0183, 2000, seatalk, etc)
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Dry or moist air density key #608

Open GHBLoos opened 3 years ago

GHBLoos commented 3 years ago

There is a difference between dry air density and moist air density. See https://en.wikipedia.org/wiki/Density_of_air

In the specifications 1.5.0 there is only a airDensity key, without specifying if this is dry or moist. In my opinion there are three possibilities

  1. define airDensity as dry air density
  2. define airDensity as moist air density
  3. create two new keys: dryAirDensity and moistAirDensity Maybe someone has more, better or other options.

Reading this, I assume that sailors are most served with moist air density.

If someone has an instrument measuring air density, please let me know if that measures moist or dry air density