Consider updating latitude and longitude variables long name

[jenseva]

Proponent(s): @jenseva

Moderator: @OceanGlidersCommunity/format-maintainers

I noticed that the long name for latitude and longitude variables looks incorrect.

It currently is spec'd as, "latitude of each measurement and GPS location", but this is not true for underwater gliders. I recommend using something like: "Estimated Subsurface Latitude of Each Measurement" instead.

Platforms affected
All.

Additional context
I've started including a comment attribute on the subsurface position variables attempting to describe the inaccuracy and that these latitudes are estimated based on surface GPS measurements before and after the dive.

[emmerbodc]

They do also include the GPS locations so I think we should keep that part in the long name unless others disagree.

[vturpin]

I do agree with Emma, measurement are also made during surfacing. So we need to make clear this is not only estimated by also GPS.

I also think the definition of Jen is more precise.

So i will suggest a mix of both ?

Would "Estimated Subsurface Latitude of Each Measurement and GPS location" be acceptable ?

[emmerbodc]

agreed in meeting yesterday to follow vocabulary preferable label for the long name string.

[jenseva]

Sorry I haven't been able to attend the meetings due to my time zone. Can you please explain the resolution?

FWIW, a spray glider will never have a GPS measurement that is coincident with geophysical measurements because sampling is stopped during GPS fixes.

For this variable, with our gliders the locations will all be calculated, there will be no GPS positions.

Can there be flexibility in the long name for use cases like ours?

[vturpin]

Yes what Emma suggest will solve that case.
vocab pref long name is "Latitude north (WGS84)"
see definition: http://vocab.nerc.ac.uk/collection/OG1/current/LAT/
And we will link this variable to the vocab.

This definition doesn't bring any confusion I think. It can be Latitude from GPS or calculated latitude doesn't mater here. Is it acceptable for you @jenseva ?

@emmerbodc are you in charge of this PR ?

Does it sound good for you @jenseva

[jenseva]

Great, thank you for clarifying @vturpin!

[jenseva]

Oops, I'll wait to close this, so you can have it for your resolution/PR.

[callumrollo]

Thanks for raising @jenseva! Resloved in #252