Strength of the winter North Atlantic jet stream has deviated from its natural trend under anthropogenic warming

被引：2

作者：

Li, Miaofa ^{[1
,2
,3
]}

Cai, Binggui ^{[1
,2
]}

Markovic, Slobodan B. ^{[4
,5
]}

Wang, Luo ^{[3
]}

Hao, Qingzhen ^{[3
]}

Baker, Andy ^{[6
]}

Gavrilov, Milivoj B. ^{[4
]}

Jiang, Liyuan ^{[1
,2
]}

Wang, Fang ^{[1
,2
]}

Wang, Xuefeng ^{[3
]}

Wang, Lisheng ^{[3
]}

Ma, Zhibang ^{[3
]}

Xiao, Jule ^{[3
]}

Guo, Zhengtang ^{[3
]}

机构：

[1] Fujian Normal Univ, Key Lab Humid Subtrop Ecogeog Proc, Minist Educ, Fuzhou 350007, Peoples R China

[2] Fujian Normal Univ, Inst Geog, Fuzhou 350007, Peoples R China

[3] Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China

[4] Univ Novi Sad, Fac Sci, Chair Phys Geog, Trg Dositeja Obradov 3, Novi Sad 21000, Serbia

[5] Serbian Acad Arts & Sci, Knez Mihajlova 35, Belgrade 11000, Serbia

[6] Univ New South Wales, Connected Waters Initiat Res Ctr, Sydney, NSW 2052, Australia

来源：

GEOLOGY | 2023年 / 51卷 / 12期

关键词：

VARIABILITY; RESOLUTION; DRIVEN;

D O I：

10.1130/G51329.1

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The North Atlantic jet stream (NAJ) has a profound impact on the climate of the North Atlantic-European sector, especially in winter. Observations show that the winter NAJ (NAJw) has strengthened over the past similar to 140 yr. However, it remains unclear whether this long-term trend has deviated from the natural variability. Here, we present a 2500-yr-long reconstruction of NAJw strength using high-quality stalagmite delta 18O records from southeastern Europe. Our results show that the NAJw weakened during both the Roman Warm Period (300 B.C.- A.D. 200) and the Medieval Warm Period (A.D. 900-1250) but that it has strengthened under anthropogenic warming (since A.D. 1850). This indicates that its current trend has already deviated from the natural variability. The best explanation for this present anomalous trend of NAJw strength is that it was triggered by the appearance of the North Atlantic warming hole under anthropogenic forcing. This anomalous trend suggests that continued global warming may further strengthen the NAJw in the future.

引用

页码：1148 / 1152

页数：5

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