[webreac]

I work as contractor for EUROCONTROL. 90% of the time, the usual order (Lat/long) is used in software. When this is not the case, it is a good indicator that I need to be careful about the conventions used to represent all data. I have already encountered the reversed wind direction and more frequently the use of m/s instead of knots (for wind speed).

[supergarfield]

Aren't m/s the correct unit for wind speed? https://en.m.wikipedia.org/wiki/Wind_speed

> Meters per second (m/s) is the SI unit for velocity and the unit recommended by the World Meteorological Organization for reporting wind speeds

> Since 2010 the International Civil Aviation Organization (ICAO) also recommends meters per second for reporting wind speed when approaching runways

[taeric]

This is one of those amusing areas where folks learn that SI units have only been adopted for elementary topics. Storage in a hard drive? Not SI.

Kind of interesting, as well, to consider this when talking about lat/lon. Do those attempt to be SI?

[ocyj]

A typical case of the governing body decides one thing but in practice the "since-always" used convention is still preferred I guess? At least this is my experience with dealing with reqs from customers within aviation.

[Leherenn]

Well, if the aircraft speed is in knots (which is generally the case), you'd rather have wind speeds in the same unit.