Globally, Earth had its fourth warmest January this year since modern temperature record-keeping began in 1880, according to a report released Thursday by the National Oceanic and Atmospheric Administration.
In
January, the global average temperature – the combined temperature of
both land and ocean surfaces – was 54.8°F, or about 1.17°F above the
20th century average of 53.6°F.
At the same time, if you ask
anyone living in the eastern half of the United States, they’re likely
to tell you this winter has been brutal. This was particularly true in
January, when temperatures dipped below -40°F in International Falls,
Minn., and many parts of the Deep South reached the single digits.
In a warming world, how can it be so bitterly cold?
Deke
Arndt, a scientist at the National Climatic Data Center explains, “We
see more evidence that we will continue to have cold air outbreaks as
the climate continues to warm. Cold air outbreaks, like the type we saw
in January, over time, have become statistically more uncommon.”
Even
though it was generally colder than average east of the Continental
Divide and in parts of Siberia, it was warmer than average elsewhere.
Take
Alaska for example. The Last Frontier is normally frigid this time of
year, but looking at the map it’s clear that temperatures were well
above average for January.
January's average monthly high
temperature for Fairbanks, Alaska is 1.1°F. But the average January high
temperature in Fairbanks this year was much higher, at 16.4°F. At one
point, the afternoon high temperature in Fairbanks hit 45°F, which was a
tie for its sixth warmest January day on record.
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