The Erken Laboratory has monitored the duration of ice cover of lake Erken since the 1940s. The data shows a strong decrease in the average duration of ice cover over time. This year, in particular, the situation is special as the lake has so far only been frozen for 5 days this winter. If the situation remains like this, it would be by far the shortest duration of ice cover since the start of measurements.
You can also listen to an interview with Gesa Weyhenmeyer by the Swedish Radio on the topic here.
Photographer: Silke Langenheder.