The 2013 extreme weather events included several all-time temperature records in Northern and Southern Hemisphere. The February extent of snow cover in Eurasia and North America was above average, while the extent of Arctic ice in the same month was 4,5% below the 1981–2010 average. The Northern Hemisphere weather extremes have been linked to the melting of Arctic sea ice, which alters atmospheric circulation in a way that leads to more snow and ice. In Europe the late spring and June were perturbed. While Finland and most of Northern Countries got the record high, and even the highest temperatures at Europe during May and June, Western- and Middle Europe faced much cooler weather and even their wettest May and June ever. This difference at weather was very exceptional in Europe.
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