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Warming trends increasingly dominate global ocean

Author

Listed:
  • Gregory C. Johnson

    (NOAA/Pacific Marine Environmental Laboratory)

  • John M. Lyman

    (NOAA/Pacific Marine Environmental Laboratory
    Joint Institute for Marine and Atmospheric Research, University of Hawai’i at Manoa)

Abstract

The ocean takes up about 93% of the global warming heat entering Earth’s climate system. In addition, the associated thermal expansion contributes substantially to sea-level rise. Hence, quantifying the oceanic heat uptake rate and its statistical significance has been a research focus. Here we use gridded ocean heat content maps to examine regional trends in ocean warming for 0–700 m depth from 1993–2019 and 1968–2019, periods based on sampling distributions. The maps are from four research groups, three based on ocean temperature alone and one combining ocean temperature with satellite altimeter sea-level anomalies. We show that use of longer periods results in larger percentages of ocean area with statistically significant warming trends and less ocean area covered by statistically significant cooling trends. We discuss relations of these patterns to climate phenomena, including the Pacific Decadal Oscillation, the Atlantic Meridional Overturning Circulation and global warming.

Suggested Citation

  • Gregory C. Johnson & John M. Lyman, 2020. "Warming trends increasingly dominate global ocean," Nature Climate Change, Nature, vol. 10(8), pages 757-761, August.
    • Handle: RePEc:nat:natcli:v:10:y:2020:i:8:d:10.1038_s41558-020-0822-0
    DOI: 10.1038/s41558-020-0822-0
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    Cited by:

    1. Ying Zhang & Yan Du & Ming Feng & Alistair J. Hobday, 2023. "Vertical structures of marine heatwaves," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Andrea Storto & Chunxue Yang, 2024. "Acceleration of the ocean warming from 1961 to 2022 unveiled by large-ensemble reanalyses," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    3. Kathrin Busch & Beate M. Slaby & Wolfgang Bach & Antje Boetius & Ina Clefsen & Ana Colaço & Marie Creemers & Javier Cristobo & Luisa Federwisch & Andre Franke & Asimenia Gavriilidou & Andrea Hethke & , 2022. "Biodiversity, environmental drivers, and sustainability of the global deep-sea sponge microbiome," Nature Communications, Nature, vol. 13(1), pages 1-16, December.

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