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In January 2019, a problem was identified regarding the following data in the climate data store (CDS):
| CDS Dataset | ERA5 hourly data on pressure levels from |
|---|
1979 to present | |
|---|---|
| Parameters affected | U-component of wind, V-component of wind |
| Level | All pressure levels |
| Time periods affected | All ERA5 pressure-level winds of product type Reanalysis and Ensemble members |
Only exactly at the poles (i.e., where latitude is 90N or 90S), the values of the U and V components of the wind are far too low. Values are close to zero, rather than several m/s. At all other locations the winds are
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