They are supposed to be surface currents as described here:
However I have not been able to found any information about ocean currents data provided by NESDIS / NOAA.
IMHO this data is rather from OSCAR / NASA
With a 0.25° grid, the resolution of OSCAR model corresponds effectively to 22km as said by Windy (longitudinally at USA latitude).
By the way earth.nullschool.net show the same type of data:
but it is said provided by OSCAR:
In case the data is confirmed to be provided by OSCAR, it must be noted that "The model calculates a surface current averaged over the top 30m of the upper ocean".
Hi @ab-blok, we are aware of these locations around the world. However, this problem should be addressed to Open Street Map, since we use their maps and have no control over them.
Please see the following posts about how the map data for Windy is sourced and displayed from www.openstreetmap.org:
Please also note: For every language, a different place name label can be displayed, so please choose your correct language and data display.
Further discussion of place name and language issues or disputes should be directed to the OpenStreetMap Forum here: https://forum.openstreetmap.org/index.php > scroll down & select > users: (the relevant country for your dispute and/or question)
In the case of a political dispute please leave such topics out of the Windy forum and instead focus on the discussion of weather.
Thank you for your understanding :)