Eurasia’s transition from colder winters to hotter summers driven by North Atlantic air–sea interaction and Arctic sea ice anomalies 第二届未来大气科学论坛

Presentation Details

Eurasia’s transition from colder winters to hotter summers driven by North Atlantic air–sea interaction and Arctic sea ice anomalies

ID：56 View Protection：ATTENDEE Updated Time：2026-03-20 13:23:00 Hits：170 Extended type 2

Start Time：2026-04-26 13:30（Asia/Shanghai）

Duration：20min

Session：S1-14 专题1.14 极地与中低纬气候系统相互作用 » F5专题1.14 极地与中低纬气候系统相互作用

No files

Abstract

Extreme cold winters and hot summers over Eurasia are intensifying under global warming, pos

ing substantial risks to agriculture, ecosystems, and human health. Here, we show that a colder

winter tends to be followed by a hotter summer over Eurasia. This winter-summer extreme tem

perature reversal is linked to the phase switch of the Arctic oscillation (AO) from winter to sum

mer, which is driven by the North Atlantic air–sea interaction and Arctic sea ice-atmosphere coup

ling. Specifically, a negative AO in winter weakens high-latitude westerlies, causing cold extremes

over Eurasia. Negative AO also induces a tripolar sea surface temperature anomaly in the North

Atlantic that persists into the following summer and triggers positive AO-like atmospheric anom

alies, leading to a hotter summer across Eurasia. Moreover, winter atmospheric anomalies reduce

the Barents–Kara sea ice through horizontal moisture transport. This sea ice loss persists into

summer and contributes to the formation of positive AO-like atmospheric anomalies. These pro

cesses establish a cross-seasonal transition from extreme cold winters to extreme hot summers over

Eurasia, offering new insight into the prediction of summer extreme events.

Keywords

极端事件、北极海冰、北大西洋海气相互作用

Speaker

陈尚锋

研究员 中国科学院大气物理研究所

Submission Author

陈尚锋中国科学院大气物理研究所

Submit Comment

All Comments

Important Date

Conference Date

Apr 25

2026

to

Apr 29

2026
Apr 07 2026

Draft paper submission deadline
Jun 17 2026

Registration deadline

Organized By

河海大学海洋学院
南京大学南京赫尔辛基大气与地球系统科学学院

Contact Information

秦箭煌
qi******@hhu.edu.cn
173********

薛廉
li******@nju.edu.cn
156********

孙佳妮
sc******@chytey.com
152********

Previous Conferences

2025-04-17 China 北京
第一届未来大气科学论坛

第二届未来大气科学论坛