Some years ago I made a weather app based on a yearly updated Copernicus dataset. Its main features are monthly wind roses that summarize the last 5 years for a selected area. My idea was that this would be a nice tool for holiday or passage planning. This ERA5 hourly data on single levels dataset from cds.climate.copernicus.eu is used.

What I am currently missing are the ocean currents. I saw that the dataset includes Stokes drift but unfortunately this is much lower than the ocean currents. Is there any related dataset that includes such currents? Or another dataset with a similar resolution?

Currently, I am using 8 measurements per day of the previous 5 years minus 20° from the poles (70°S to 70°N).

  • $\begingroup$ Try something like: charts.ecmwf.int/catalogue/packages/oras5/products/… $\endgroup$
    – arkaia
    Commented Jan 28 at 15:45
  • $\begingroup$ Also: climatedataguide.ucar.edu/climate-data/… $\endgroup$
    – arkaia
    Commented Jan 28 at 15:46
  • 2
    $\begingroup$ Ah, "zonal" and "meridional" velocity. That's what I need to look for. Thanks $\endgroup$ Commented Jan 28 at 16:43
  • $\begingroup$ HYCOM is also widely used in offshore engineering for operational planning. $\endgroup$ Commented Jan 30 at 12:20
  • $\begingroup$ Maybe a followup question: Is "rotated zonal" velocity the value I am looking for? In the dataset documentation "rotated zonal" is described as "Eastward horizontal surface velocity of a water parcel", whereas "zonal" as "Horizontal velocity of a water parcel in the direction of x axis of the ocean model". So, I have to assume the x-direction of the ocean model is not necessarily eastward? $\endgroup$ Commented Jan 30 at 15:02


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