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Birch pollen – how did it develop?

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Watch our simulation of the 2020 birch pollen spread in Europe

It is all over for this time, and we have dived into our data and calculations and visualised how the birch pollen season developed this year.

Visualisation of the birch pollen spread in Europe 2020. Red means high pollen level, yellow moderate, dark green moderate-low levels and light green low levels.

Observant (or allergic) readers will notice that the simulation starts later than the onset of the season, Central Europe had birch blooming in March. We did not start the simulation earlier due to limitations in our data sets.

Later than usual in the north

If we compare this year’s development with normals, we see that the birch pollen hit Northern Europe later than usual this year. (Watch our video How the birch pollen front moves through Europe.) May was much colder than normal in most of Scandinavia, which explains the late pollen spread. Central and Southern Europe experienced a birch pollen season fairly close to normal.

Follow Airmine’s pollen stories

We are publishing updates on pollen in Europe regularly, focus ahead will be on grass and mugwort (artemisia). You may be interested in some of our previous posts: Grass pollen levels still high in Central Europe, The birch pollen front continues north – temporary slowdown due to colder weather.

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