Role of Pacific preconditioning in modulating the relationship between the spring North Tropical Atlantic SST and the ensuing El Niño

Role of Pacific preconditioning in modulating the relationship between the spring North Tropical Atlantic SST and the ensuing El Niño
复制标题

太平洋预处理在调节春季北热带大西洋海温与随后发生的厄尔尼诺现象之间关系中的作用

DOI:
10.1016/j.ocemod.2022.102128
复制
发表时间:
2022-10
期刊:
影响因子:
3.2
通讯作者:
Ziniu Xiao
Ziniu Xiao
中科院分区:
地球科学3区
文献类型:
--
作者:
Sheng Chen;Jiepeng Chen;Xin Wang;Zhuoqi He;Ziniu Xiao

文献摘要

参考文献

相似文献

以前的文献表明,北热带大西洋(NTA)春季寒冷的海面温度(SST)异常可能会引发随后的厄尔尼诺事件。然而,观察表明,这种关系并不总是牢固的。例如,春季寒冷的NTA海温异常并不一定伴随着随后的冬季厄尔尼诺事件。将两种情况进一步分类比较:春寒NTA海温异常伴随厄尔尼诺(标记为NTA-El Niño)和春冷NTA SST异常伴生无厄尔尼诺(标记为NTA-正常)。统计分析表明,太平洋预适应在调节NTA、SST和厄尔尼诺关系中起着重要作用。副热带太平洋东部纬向风异常是连接春季NTA海温异常与后续厄尔尼诺发展的重要媒介,春夏季纬向风异常主要与前期冬季热带太平洋海温异常有关。两组耦合的大气环流模式(CGCM)在弱和强拉尼娜条件下运行,验证了所提出的机制。与强拉尼娜事件相比,在前冬弱拉尼娜事件下,春寒NTA海温异常对后续厄尔尼诺事件的发展具有更强的调制作用。本文的研究表明,在利用春季NTA海温异常的前兆预报ENSO时,太平洋预适应的重要性。
Previous literature has indicated that a spring cold sea surface temperature (SST) anomaly in the North Tropical Atlantic (NTA) could induce an ensuing El Niño event. However, observations show that this relationship is not always robust. For example, the spring cold NTA SST anomalies are not necessarily accompanied by El Niño events in the ensuing winter. Two types of cases are further classified for comparison: a spring cold NTA SST anomaly accompanied by an El Niño (tagged as NTA-El Niño) and a spring cold NTA SST anomaly accompanied by no El Niño (tagged as NTA-Normal). Statistical analysis indicates that Pacific preconditioning acts an important role in modulating the NTA SST and El Niño relationship. The zonal wind anomaly over the eastern subtropical Pacific serves as an important medium linking the spring NTA SST anomaly to the subsequent development of El Niño, and this part of the zonal wind anomaly in spring and summer is largely associated with the preceding winter tropical Pacific SST anomaly. The proposed mechanism is verified by two groups of Coupled General Circulation Models (CGCMs) runs with a weak and strong La Niña condition. Compared with the strong La Niña case, under a weak La Niña case in the previous winter, the spring cold NTA SST anomaly is more capable of modulating the development of the ensuing El Niño event. The present study suggests the importance of Pacific preconditioning while forecasting ENSO with the precursor of the spring NTA SST anomaly.
DOI: 10.1007/s00382-013-1947-x
发表时间: 2014-09
期刊: Climate Dynamics
影响因子: 4.6
作者:
Jiepeng Chen;Z. Wen;R. Wu;Zesheng Chen;P. Zhao
通讯作者: Jiepeng Chen;Z. Wen;R. Wu;Zesheng Chen;P. Zhao
DOI: 10.1175/1520-0469(1999)056
发表时间: 1999-02
影响因子: 3.1
作者:
D. Waliser;K. Lau;Jae-Hoon Kim
通讯作者: D. Waliser;K. Lau;Jae-Hoon Kim
DOI: 10.1007/s00382-020-05530-w
发表时间: 2021-01
期刊: Climate Dynamics
影响因子: 4.6
作者:
S. Yeh;H. Jo;S. Hyun;W. Cai;Y. Ham
通讯作者: S. Yeh;H. Jo;S. Hyun;W. Cai;Y. Ham
DOI: 10.1007/s00382-020-05527-5
发表时间: 2020-11
期刊: Climate Dynamics
影响因子: 4.6
作者:
Chunzai Wang;Sheng Chen;Zhenya Song;Xin Wang
通讯作者: Xin Wang
DOI: 10.1038/ngeo1686
发表时间: 2013-02-01
期刊: NATURE GEOSCIENCE
影响因子: 18.3
作者:
Ham, Yoo-Geun;Kug, Jong-Seong;Jin, Fei-Fei
通讯作者: Jin, Fei-Fei