Observed change in duration of lake and river ice cover

Figure Created 08 Nov 2012 Published 20 Nov 2012 Last modified 21 Dec 2016
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Ice break-up dates and freezing dates of a) Danube River, at Budapest, 1876–2011 (5-year running average) and b) Lake Kallavesi, Finland, 1833–2011.


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Geographical coverage: Large European rivers and lakes

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