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Annual precipitation series (left graph) and annual cloudiness series (right graph)
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NW (top, grey) vs SE (bottom, black)
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Data and maps
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Maps and graphs
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Annual variability in lightning-induced fire frequency (dots) and burnt area (bars) in the Swiss Alps
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absolute and relative frequency distribution
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Data and maps
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Maps and graphs
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Annual water availability per person (Falkenmark indicator)
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Present and projected annual water availability per person
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Data and maps
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Maps and graphs
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Annual water stress for present conditions and projections for two scenarios
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Left: present climate; middle: projection for 2050 based on Economy First scenario, median of general circulation models — regional climate models (GCM-RCM) combinations;
right: projection for 2050 based on Sustainability Eventually scenario, median of GCM-RCM combinations.
Yellow: low water stress (withdrawals-to-availability ratio: 0–0.2);
orange: mild water stress (withdrawals-to-availability ratio: 0.2–0.4);
red: severe water stress (withdrawals-to-availability ratio: > 0.4).
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Data and maps
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Maps and graphs
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Annual, winter (December, January, February) and summer (June, July, August) mean temperature deviations in Europe, 1860-2010 (°C)
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The lines refer to 10-year moving average European land.
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Data and maps
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Maps and graphs
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Antarctic temperature change and atmospheric carbon dioxide concentration (CO2) over the past 800 000 years
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The record is derived from several ice cores from the Antarctic ice sheet, some more than 3 km long
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Maps and graphs
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Apparent southward shift of European cities — due to climate change, 2070-2100
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Maps and graphs
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Arctic — why should I care?
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Signals — every breath we take
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Signals 2010
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Arctic and Baltic Sea ice (CLIM 010) - Assessment published Nov 2012
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The extent and volume of the Arctic sea ice has declined rapidly since global data became available in 1980, especially in summer. Record low sea ice cover in September 2007, 2011 and 2012 was roughly half the size of the normal minimum extent in the 1980s.
In the period 1979-2011, the Arctic has lost on average 45 000 km 2 of sea ice per year in winter and 91 000 km 2 per year at the end of summer. The decline in summer sea ice appears to have accelerated since 1999.
Arctic Sea ice is projected to continue to shrink in extent and thickness and may even disappear at the end of the summer melt season in the coming decades. There will still be substantial ice in winter.
Baltic Sea ice, in particular the extent of the maximal cover, is projected to shrink.
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Data and maps
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Indicators
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Arctic and Baltic Sea ice
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Arctic sea ice (CLIM 010) - Assessment published Sep 2008
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The extent of the sea ice in the Arctic has declined at an accelerating rate, especially in summer. The record low ice cover in September 2007 was roughly half the size of the normal minimum extent in the 1950s. The summer ice is projected to continue to shrink and may even disappear at the height of the summer melt season in the coming decades. There will still be substantial ice in winter. Reduced polar ice will speed up global warming and is expected to affect ocean circulation and weather patterns. Species specialised for life in the ice are threatened. Less ice will ease access to the Arctic's resources. Oil and gas exploration, shipping, tourism and fisheries will offer new economic opportunities, but also increase pressures and risks to the Arctic environment.
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Data and maps
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Indicators
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Arctic sea ice