According to data released by NASA and NOAA this month, April 2012 ranked among the top 5 warmest Aprils on record: NASA recorded the 4th (tied) warmest April in its dataset; NOAA recorded the 5th warmest April in its dataset. The two agencies have slightly different analysis techniques, which actually helps to reinforce the results from each other.
April’s global average temperatures were 0.56°C above normal (1951-1980), according to NASA. The warmest regions on Earth are exactly where climate models have been projecting the most warmth to occur for years: high latitudes (especially within the Arctic Circle in April 2012). The past three months have a +0.47°C temperature anomaly. And the latest 12-month period (May 2011 – Apr 2012) had a +0.49°C temperature anomaly.
According to NOAA, April’s global average temperatures were 0.65°C (1.17°F) above the 20th century mean of 13.7°C (56.7°F). NOAA’s global temperature anomaly map for…
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