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Trends in Finnish Environment 1997, fig. 1.7, updated in February 2000
Uploaded on Tuesday 21 Feb 2012
Trends in the ice-breaking date in the Tornio river, Finland
Philippe Rekacewicz, UNEP/GRID-Arendal
The icebreaking date for the Tornio River in Finland has been recorded since 1693. With the increased greenhouse effect, impacts on the cryosphere are likely. One impact will be less ice on rivers and lakes. Freeze-up dates will be delayed, and break-up will begin earlier. The period of river-ice could be shortened by up to a month. Many rivers within the temperate regions could become ice-free or develop only intermittent or partial ice coverage.