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Unprecedented decline of Arctic sea ice outflow in 2018

Author

Listed:
  • Hiroshi Sumata

    (Norwegian Polar Institute, Fram Centre)

  • Laura Steur

    (Norwegian Polar Institute, Fram Centre)

  • Sebastian Gerland

    (Norwegian Polar Institute, Fram Centre)

  • Dmitry V. Divine

    (Norwegian Polar Institute, Fram Centre)

  • Olga Pavlova

    (Norwegian Polar Institute, Fram Centre)

Abstract

Fram Strait is the major gateway connecting the Arctic Ocean and North Atlantic Ocean, where nearly 90% of the sea ice export from the Arctic Ocean takes place. The exported sea ice is a large source of freshwater to the Nordic Seas and Subpolar North Atlantic, thereby preconditioning European climate and deep water formation in the North Atlantic Ocean. Here we show that in 2018, the ice export through Fram Strait showed an unprecedented decline since the early 1990s. The 2018 ice export was reduced to less than 40% relative to that between 2000 and 2017. The minimum export is attributed to regional sea ice-ocean processes driven by an anomalous atmospheric circulation over the Atlantic sector of the Arctic. The result indicates that a drastic change of the Arctic sea ice outflow and its environmental consequences happen not only through Arctic-wide ice thinning, but also by regional scale atmospheric anomalies.

Suggested Citation

  • Hiroshi Sumata & Laura Steur & Sebastian Gerland & Dmitry V. Divine & Olga Pavlova, 2022. "Unprecedented decline of Arctic sea ice outflow in 2018," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29470-7
    DOI: 10.1038/s41467-022-29470-7
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    References listed on IDEAS

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    1. Stefan Rahmstorf & Jason E. Box & Georg Feulner & Michael E. Mann & Alexander Robinson & Scott Rutherford & Erik J. Schaffernicht, 2015. "Exceptional twentieth-century slowdown in Atlantic Ocean overturning circulation," Nature Climate Change, Nature, vol. 5(5), pages 475-480, May.
    2. Takamasa Tsubouchi & Kjetil Våge & Bogi Hansen & Karin Margretha H. Larsen & Svein Østerhus & Clare Johnson & Steingrímur Jónsson & Héðinn Valdimarsson, 2021. "Increased ocean heat transport into the Nordic Seas and Arctic Ocean over the period 1993–2016," Nature Climate Change, Nature, vol. 11(1), pages 21-26, January.
    3. Paola Moffa-Sánchez & Ian R. Hall, 2017. "North Atlantic variability and its links to European climate over the last 3000 years," Nature Communications, Nature, vol. 8(1), pages 1-9, December.
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    1. Caroline V. B. Gjelstrup & Mikael K. Sejr & Laura Steur & Jørgen Schou Christiansen & Mats A. Granskog & Boris P. Koch & Eva Friis Møller & Mie H. S. Winding & Colin A. Stedmon, 2022. "Vertical redistribution of principle water masses on the Northeast Greenland Shelf," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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