Observed changes in (a) global average surface temperature, (b) global average sea level and (c) northern hemispheric snow cover for March-April

Figure Created 12 Nov 2009 Published 12 Nov 2009 Last modified 29 Nov 2012
All changes are relative to the period 19611990



Additional information

Circles show yearly average values, smoothed curves are based on 10year averaged values and shaded area show the uncertainty.

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