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Linkages between extreme cold events in southern China and sea ice extent in Barents-Kara seas from 1289 to 2017

Authors

Yang,  Jiao
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Xiao,  Cunde
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Zhang,  Qi
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Du,  Zhiheng
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Ding,  Minghu
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Dou,  Tingfeng
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Luo,  Binhe
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Yang, J., Xiao, C., Zhang, Q., Du, Z., Ding, M., Dou, T., Luo, B. (2023): Linkages between extreme cold events in southern China and sea ice extent in Barents-Kara seas from 1289 to 2017, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-1464


Cite as: https://gfzpublic.gfz.de/pubman/item/item_5017134
Abstract
Arctic sea ice loss and the associated enhanced warming has been related to mid-latitude weather and climate changes through modulate meridional temperature gradients linked to circulation. However, contrasting lines of evidence results in low confidence in the influence of Arctic warming on mid-latitude climate. This study examines the additional perspectives that palaeoclimate evidence provides on the decadal relationship between the autumn sea ice extent (SIE) in Barents-Kara (B-K) seas and the extreme cold wave events (ECWEs) occurred in southern China. Reconstruction of winter Cold Index and SIE in B-K seas from 1289 to 2017 show that the significant anti-phase relationship occurred in most periods of SIE decreasing, performing with the cold winter occurred more likely in the low SIE years, associated with the “bridge” role of North Atlantic Oscillation and Siberian High. It is confirmed that the recent frequently occurrence of the ECWEs in southern China is closely related to the sea ice decline in B-K seas. However, our results investigated the linkage is unstable, especially in the high SIE periods, which is probably modulated by the atmospheric internal variability.