Eurasia’s transition from colder winters to hotter summers driven by North Atlantic air–sea interaction and Arctic sea ice anomalies
编号:56 访问权限:仅限参会人 更新:2026-03-20 13:23:00 浏览:16次 主题报告

报告开始:2026年04月26日 13:30(Asia/Shanghai)

报告时间:20min

所在会场:[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

暂无文件

摘要
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.
关键词
极端事件、北极海冰、北大西洋海气相互作用
报告人
陈尚锋
研究员 中国科学院大气物理研究所

稿件作者
陈尚锋 中国科学院大气物理研究所
发表评论
验证码 看不清楚,更换一张
全部评论
重要日期
  • 会议日期

    04月25日

    2026

    04月29日

    2026

  • 04月07日 2026

    初稿截稿日期

主办单位
未来大气科学论坛理事会
承办单位
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
联系方式
历届会议
移动端
在手机上打开
小程序
打开微信小程序
客服
扫码或点此咨询