FIG. 5. Annual surface temperature anomalies (°C) for (a) Canada, (b) the contiguous
United States, (c) Europe, (d) Asia, (e) Russia, and (f) Australia. Anomalies are
departures from the 1961–90 base period means. [Source: (a) Environment Canada,
(b–e) National Climatic Data Center, and (f) Australian Bureau of Meteorology.]
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