<p>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 <a href="https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=overview" rel="nofollow noreferrer">ERA5 hourly data on single levels</a> dataset from <a href="https://cds.climate.copernicus.eu/" rel="nofollow noreferrer">cds.climate.copernicus.eu</a> is used.</p>
<p>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?</p>
<p>Currently, I am using 8 measurements per day of the previous 5 years minus 20° from the poles (70°S to 70°N).</p>

CC BY-SA 4.0
2024-01-28T15:45:17.377Z
Try something like: https://charts.ecmwf.int/catalogue/packages/oras5/products/oras5_xymaps_1m?AnomalyMode=Full%20field&Field=Surface%20Meridional%20Velocity&base_time=202312010000
arkaia
CC BY-SA 4.0
2024-01-28T15:46:31.380Z
Also: https://climatedataguide.ucar.edu/climate-data/soda-simple-ocean-data-assimilation
arkaia
CC BY-SA 4.0
2024-01-28T16:43:31.800Z
Ah, "zonal" and "meridional" velocity. That's what I need to look for. Thanks
mRcSchwering
CC BY-SA 4.0
2024-01-30T12:20:24.570Z
[HYCOM](https://www.hycom.org) is also widely used in offshore engineering for operational planning.
Ingvar Lukas
CC BY-SA 4.0
2024-01-30T15:02:58.020Z
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?
mRcSchwering
<ocean-currents><open-data><reanalysis>
Are there good public datasets for ocean currents?
mRcSchwering
# Are there good public datasets for ocean currents?

(Asked by: username_0 on 2024-01-28)

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](https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=overview) dataset from [cds.climate.copernicus.eu](https://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).

**Tags:** ocean-currents, open-data, reanalysis

> **Comments:**
> **username_1**: Try something like: https://charts.ecmwf.int/catalogue/packages/oras5/products/oras5_xymaps_1m?AnomalyMode=Full%20field&Field=Surface%20Meridional%20Velocity&base_time=202312010000  
> **username_1**: Also: https://climatedataguide.ucar.edu/climate-data/soda-simple-ocean-data-assimilation  
> **username_0**: Ah, "zonal" and "meridional" velocity. That's what I need to look for. Thanks  
> **username_2**: [HYCOM](https://www.hycom.org) is also widely used in offshore engineering for operational planning.  
> **username_0**: 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?  

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## 0 answers

