fetching traj files with argopy

[haydenleo]

Hello,

I am doing research on oxygen data from argo floats and I'd like to use argopy since it has a ton of excellent tools and features. However I am trying to access the in-air oxygen measurements which are stored in the BRtraj files, but it seems the fetcher currently can only retrieve prof files. Would it be possible to make the fetcher to fetch the traj files?

[gmaze]

Hello @haydenleo thanks for your interest in argopy and the enhancement suggestion !

Indeed there's no specific fetcher in argopy for trajectory data, yet ...

Note that you can open a BRtraj file with correct variable types using the xarray 'argo' engine:

import xarray as xr
ds = xr.open_dataset("bodc/3901578/3901578_BRtraj.nc", engine='argo')

Feel free to contribute to argopy to:

• implement this new data fetcher,
• include your own tools in sub-module, that is the best way to start, by integrating and sharing your existing code to argopy

[haydenleo]

I didn't know xarray had an engine for argo floats, this is just what I needed. Thank you!

[gmaze]

the 'argo' engine is provided by argopy once installed ...

I encourage you to possibly share some code or notebook to show how you're using these BRtraj files, these could go in the argopy gallery thanks

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