Storm Hans (or Zacharias/Petar) with ~979 hPa is already the next major cyclonic summer storm after Poly (4-7 July 2023 with up to 148 km/h; 92 mph) bringing devastating floods to Sweden & Norway. In several ways, Hans is "the perfect storm" & globalwarming contributed.

Frederik Schenks post på X/twitter , augusti 9 2023.

But why are Geologists interested in storms?

While storm Hans is clearly more intense in terms of rain and flooding due to global warming, we still don't know so much about long-term changes regarding the frequency and intensity of winter or summer storms or whether storm tracks changed their path in the past in response to changes in climate forcing. In a storminess research project let by Malin Kylander, several researchers at IGV study past storminess in various sedimental systems in the Euro-Atlantic region for the last up to 10.000 years. These reconstructions are crucial to understand if and how storms change due to warming or cooling and evaluate whether our climate models capture such changes. "As an atmospheric scientist, it is fascinating to observe first changes in real storms while in the same time learning more and more about them in the past," says Frederik Schenk.

Länkar

Se klippet på SVT play där Frederik Schenk berättar om stormen "Hans"

Se klippet här

Mera om oväder/storm

Projektet: Stormars mönster och orsaker i östra Nordatlanten

Nordvästra Europa har under de senaste decennierna drabbats av förödande stormar. Ökade stormtillfällen (frekvens och intensitet) förutspås med framtida klimatförändringar, det finns dock betydande osäkerheter i dessa prognoser. En delförklaring till osäkerheten är avsaknaden av information om naturlig variabilitet om stormtillfällen på längre tidsskalor.
Storminess in the Eastern North Atlantic Region