Origins of Barents-Kara sea-ice interannual variability modulated by the Atlantic pathway of El Niño-Southern Oscillation.
Origins of Barents-Kara sea-ice interannual variability modulated by the Atlantic pathway of El Niño-Southern Oscillation.
复制标题
Barents-Kara Sea-Ice际变异性的起源，该变异性由ElNiño-Southern振荡的大西洋途径调节。
DOI：
10.1038/s41467-023-36136-5
复制
发表时间：
2023-02-03
影响因子：
16.6
通讯作者：
Yao, Yao
中科院分区：
文献类型：
--
作者：
Luo, Binhe;Luo, Dehai;Ge, Yao;Dai, Aiguo;Wang, Lin;Simmonds, Ian;Xiao, Cunde;Wu, Lixin;Yao, Yao
冬季北极海冰密度(SIC)的下降对北极的放大起着重要作用，进而影响北极生态系统、中纬度天气和气候。巴伦支海-卡拉海(BKS)上的SIC显示出巨大的年际变化，其来源尚不清楚。这里我们发现，近几十年来，冬季BKS的年际变化明显增强，这可能是由于气候变暖中厄尔尼诺-南方涛动(ENSO)的幅度增加所致。拉尼娜现象导致大西洋哈德利环流增强，北大西洋涛动类正位相异常模式，以及伴随的乌拉尔阻塞，将大西洋海洋热量和大气水汽输送到BKS，并通过加剧表面变暖促进海冰融化。在厄尔尼诺期间出现了相反的情况，导致大西洋向极地输送减弱，BKS SIC增加。因此，BKS SIC的年际变化部分源于ENSO通过大西洋路径。本文发现，近几十年来，巴伦支海-卡拉海冬季海冰的年际变化增强，这可能是由于气候变暖引起的厄尔尼诺-南方涛动的增强所致。
Winter Arctic sea-ice concentration (SIC) decline plays an important role in Arctic amplification which, in turn, influences Arctic ecosystems, midlatitude weather and climate. SIC over the Barents-Kara Seas (BKS) shows large interannual variations, whose origin is still unclear. Here we find that interannual variations in winter BKS SIC have significantly strengthened in recent decades likely due to increased amplitudes of the El Niño-Southern Oscillation (ENSO) in a warming climate. La Niña leads to enhanced Atlantic Hadley cell and a positive phase North Atlantic Oscillation-like anomaly pattern, together with concurring Ural blocking, that transports Atlantic ocean heat and atmospheric moisture toward the BKS and promotes sea-ice melting via intensified surface warming. The reverse is seen during El Niño which leads to weakened Atlantic poleward transport and an increase in the BKS SIC. Thus, interannual variability of the BKS SIC partly originates from ENSO via the Atlantic pathway. This paper finds that the winter sea-ice over the Barents-Kara Seas has exhibited strengthened interannual variations in recent decades likely due to increased amplitudes of the El Niño-Southern Oscillation in a warming climate.
登录
查看更多内容
影响因子：
6.7
作者：
Day, J. J.;Hargreaves, J. C.;Abe-Ouchi, A.
通讯作者：
Abe-Ouchi, A.
影响因子：
5.2
作者：
Cavalieri, D. J.;Parkinson, C. L.
通讯作者：
Parkinson, C. L.
PDO和两类拉尼娜现象对欧洲气候异常的综合影响
影响因子：
4.9
作者：
Ding, Shuoyi;Chen, Wen;Graf, Hans-F.
通讯作者：
Graf, Hans-F.
影响因子：
4.9
作者：
Asbjornsen, Helene;Johnson, Helen L.;Arthun, Marius
通讯作者：
Arthun, Marius
DOI：
10.1002/qj.49712757603
发表时间：
2001-07-01
影响因子：
8.9
作者：
Czaja, A;Marshall, J
通讯作者：
Marshall, J