Record daily highs

>> Thursday, March 20, 2014

Technically, if the Earth's temperature was not increasing, you would expect that the number of record daily highs and lows being set each year should be about even. But that is far from the case. For the period from January 1, 2000, to December 20, 2009, the continental United States set 294,276 record highs and only 145,498 record lows. And if you look back over the past sixty years, that picture is reinforced. The ratio of record daily high to record daily low temperatures was almost one to one in the 1950s but has been rising steadily since the 1980s.
~ The Weather of the Future, Heidi Cullen, p. 274

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