Something about September keeps bringing out the record heat in the world. The globe last month matched a record for the hottest September, set in 2005. It was the third time since 2000 that the world set or tied a heat record for September. In addition to 2012 and 2005, previous hot September records were set in 2003. And these records go back to 1880.
Last month’s average temperature was 60.2 F worldwide, which is 1.2 degrees above normal, the National Oceanic and Atmospheric Administration says. NOAA climate monitoring chief Deke Arndt says it may be worth studying why September, more than other months, keeps setting world records. It might be the lengthening of the Northern Hemisphere summer as a result of man-made global warming and continual loss of Arctic sea ice that indirectly helps cool other parts of the world, says Univ. of Victoria climate scientist Andrew Weaver.
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