Technical Note: Past and future warming - direct comparison on multi-century timescales

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In 2013, the Intergovernmental Panel on Climate Change concluded that Northern Hemisphere temperatures had reached levels unprecedented in at least 1400 years. The 2021 report now sees global mean temperatures rising to levels unprecedented in over 100 000 years. This Technical Note briefly explains the reasons behind this major change. Namely, the new assessment reflects additional global warming that occurred between the two reports and improved paleotemperature reconstructions that extend further back in time. In addition to past and recent warming, the conclusion also considers multi-century future warming, which thereby enables a direct comparison with paleotemperature reconstructions on multi-century time scales.

Original languageEnglish (US)
Pages (from-to)911-917
Number of pages7
JournalClimate of the Past
Issue number4
StatePublished - Apr 26 2022

ASJC Scopus subject areas

  • Global and Planetary Change
  • Stratigraphy
  • Palaeontology


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