NaN values for Spring time wave conditions in the Gulf of Bothnia

Datasets and Usage C3S - Datasets and Usage
1

Hi,
I have tried to download surface wave data from the ERA5 renanlysis dataset (1940-2024) for a location in the Gulf of Bothnia.
I consistently get NaN values for the Spring months only, across the majority of years. See image attached.
Is there a known fault with this dataset?

wave 1961
wave 19611440×576 74.4 KB

2

Have you checked for sea ice?

image
image567×649 159 KB

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3

:slight_smile: I was just typing exact same comment

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