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Shifting El Niño inhibits summer Arctic warming and Arctic sea-ice melting over the Canada Basin

Author

Listed:
  • Chundi Hu

    (Institute of Earth Climate and Environment System, Sun Yat-sen University, 135 West Xingang Road, Guangzhou
    School of Atmospheric Sciences, Nanjing University, Nanjing)

  • Song Yang

    (Institute of Earth Climate and Environment System, Sun Yat-sen University, 135 West Xingang Road, Guangzhou
    School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou
    Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Guangzhou)

  • Qigang Wu

    (School of Atmospheric Sciences, Nanjing University, Nanjing)

  • Zhenning Li

    (Institute of Earth Climate and Environment System, Sun Yat-sen University, 135 West Xingang Road, Guangzhou
    School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou)

  • Junwen Chen

    (School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou)

  • Kaiqiang Deng

    (Institute of Earth Climate and Environment System, Sun Yat-sen University, 135 West Xingang Road, Guangzhou
    School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou)

  • Tuantuan Zhang

    (Institute of Earth Climate and Environment System, Sun Yat-sen University, 135 West Xingang Road, Guangzhou
    School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou)

  • Chengyang Zhang

    (Institute of Earth Climate and Environment System, Sun Yat-sen University, 135 West Xingang Road, Guangzhou
    Climate Center, Guangxi Meteorological Bureau, Nanning)

Abstract

Arctic climate changes include not only changes in trends and mean states but also strong interannual variations in various fields. Although it is known that tropical-extratropical teleconnection is sensitive to changes in flavours of El Niño, whether Arctic climate variability is linked to El Niño, in particular on interannual timescale, remains unclear. Here we demonstrate for the first time a long-range linkage between central Pacific (CP) El Niño and summer Arctic climate. Observations show that the CP warming related to CP El Niño events deepens the tropospheric Arctic polar vortex and strengthens the circumpolar westerly wind, thereby contributing to inhibiting summer Arctic warming and sea-ice melting. Atmospheric model experiments can generally capture the observed responses of Arctic circulation and robust surface cooling to CP El Niño forcing. We suggest that identification of the equator-Arctic teleconnection, via the ‘atmospheric bridge’, can potentially contribute to improving the skill of predicting Arctic climate.

Suggested Citation

  • Chundi Hu & Song Yang & Qigang Wu & Zhenning Li & Junwen Chen & Kaiqiang Deng & Tuantuan Zhang & Chengyang Zhang, 2016. "Shifting El Niño inhibits summer Arctic warming and Arctic sea-ice melting over the Canada Basin," Nature Communications, Nature, vol. 7(1), pages 1-9, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11721
    DOI: 10.1038/ncomms11721
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    Cited by:

    1. Liangying Zeng & Yao Ha & Chuanfeng Zhao & Haixia Dai & Yimin Zhu & Yijia Hu & Xiaoyu Zhu & Zhiyuan Ding & Yudi Liu & Zhong Zhong, 2024. "Tropical cyclone activity over western North Pacific favors Arctic sea ice increase," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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