Record high temperatures are currently
outnumbering record low temperatures by about two to one, and those ratios are projected to be about 20 to 1 by mid-century and 50 to 1 by 2100, said Jerry Meehl, a scientist at the National Center for Atmospheric Research.
Not exact matches
Their study, published in the journal Geophysical Research Letters, also found evidence that climate change is skewing the proportion of
record high
temperatures to
record low temperatures in the continental United States, with extremely hot days now
outnumbering extremely cold days by 2 - to - 1.
Since 2015, the number of daily
record high
temperature in the U.S. has
outnumbered the number of daily
record lows by more than 3 - to - 1.
During June, July and August,
record high minimum
temperatures outnumbered record low minimum
temperatures by about three to one.
And in 2016 the number of daily
record high minimum
temperatures outnumbered record low minimum
temperatures 7 - to - 1.
In the last decade, daily
record high
temperatures outnumbered record lows in the United States two to one, and that ratio is increasing.
Since 1950 the number of heat waves worldwide has increased, and heat waves have become longer.5 The hottest days and nights have become hotter and more frequent.6 7 In the past several years, the global area hit by extremely unusual hot summertime
temperatures has increased 50 - fold.8 Over the contiguous United States, new
record high
temperatures over the past decade have consistently
outnumbered new
record lows by a ratio of 2:1.9 In 2012, the ratio for the year through June 18 stands at more than 9:1.10 Though this ratio is not expected to remain at that level for the rest of the year, it illustrates how unusual 2012 has been, and how these types of extremes are becoming more likely.