The Arctic has warmed nearly four times faster than the globe since 1979

Abstract In recent decades, the warming in the Arctic has been much faster than in the rest of the world, a phenomenon known as Arctic amplification. Numerous studies report that the Arctic is warming either twice, more than twice, or even three times as fast as the globe on average. Here we show, by using several observational datasets which cover the Arctic region, that during the last 43 years the Arctic has been warming nearly four times faster than the globe, which is a higher ratio than generally reported in literature. We compared the observed Arctic amplification ratio with the ratio simulated by state-of-the-art climate models, and found that the observed four-fold warming ratio over 1979–2021 is an…

• EC
  European Commission

  Awards: 317999, H2020, 101003590, 337552
• AO
  Academy of Finland

  Awards: 317999, 342890, 342890, 337552, 337552
• CS
  China Scholarship Council
• H2
  Horizon 2020 Framework Programme

  Award: 101003590