Abstract:
:The recent levelling of global mean temperatures after the late 1990s, the so-called global warming hiatus or slowdown, ignited a surge of scientific interest into natural global mean surface temperature variability, observed temperature biases, and climate communication, but many questions remain about how these findings relate to variations in more societally relevant temperature extremes. Here we show that both summertime warm and wintertime cold extreme occurrences increased over land during the so-called hiatus period, and that these increases occurred for distinct reasons. The increase in cold extremes is associated with an atmospheric circulation pattern resembling the warm Arctic-cold continents pattern, whereas the increase in warm extremes is tied to a pattern of sea surface temperatures resembling the Atlantic Multidecadal Oscillation. These findings indicate that large-scale factors responsible for the most societally relevant temperature variations over continents are distinct from those of global mean surface temperature.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Johnson NC,Xie SP,Kosaka Y,Li Xdoi
10.1038/s41467-018-04040-ysubject
Has Abstractpub_date
2018-04-30 00:00:00pages
1724issue
1issn
2041-1723pii
10.1038/s41467-018-04040-yjournal_volume
9pub_type
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