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

• Main Authors: Yang, Jiao, Xiao, Cunde, Zhang, Qi, Du, Zhiheng, Ding, Minghu, Dou, Tingfeng, Luo, Binhe
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Arctic; North Atlantic; North Atlantic oscillation; Sea ice
• Online Access: https://dx.doi.org/10.57757/iugg23-1464; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017134

<!--!introduction!--> 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 ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...