南太平洋涛动空间结构的年代际变化及其对厄尔尼诺/南方涛动多样性的影响

IF 4.8 2区 地球科学 Q1 METEOROLOGY & ATMOSPHERIC SCIENCES
Qingye Min, Renhe Zhang
{"title":"南太平洋涛动空间结构的年代际变化及其对厄尔尼诺/南方涛动多样性的影响","authors":"Qingye Min, Renhe Zhang","doi":"10.1175/jcli-d-23-0277.1","DOIUrl":null,"url":null,"abstract":"Abstract The South Pacific Oscillation (SPO), characterized by a north-south dipole-like pattern of sea level pressure anomalies, is one of the key factors in understanding tropical-extratropical interactions in South Pacific. We show that in boreal summer (June–July–August), the center of the northern lobe sea level pressure anomalies in the SPO is shifted to the east gradually after the 1960–70s. This study focuses on the relationship between the boreal summer SPO and following winter El Niño–Southern Oscillation (ENSO) diversity before and after the eastward shift of the SPO’s subtropical lobe. The eastward shift of the SPO’s subtropical lobe altered both the seasonal footprint mechanism and the trade wind charging mechanism associated with the SPO, thus profoundly influenced the ENSO diversity. It is revealed that when the northern lobe of the SPO shifts to the west of its average location, it tends to strengthen the EP El Niño mainly via the seasonal footprint mechanism. but after the SPO’s northern lobe shifts to the east of its average location, it tends to promote the development of CP El Niño mainly via the trade wind charging mechanism. The changes in the spatial structure of convection over the tropical Pacific and Indian Ocean may be one of the possible causes for the eastward shift in the SPO’s northern lobe. The findings in the present study have implications for a better understanding of ENSO diversity.","PeriodicalId":15472,"journal":{"name":"Journal of Climate","volume":"20 1","pages":""},"PeriodicalIF":4.8000,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The interdecadal changes in the spatial structure of the South Pacific Oscillation and its implication for ENSO diversity\",\"authors\":\"Qingye Min, Renhe Zhang\",\"doi\":\"10.1175/jcli-d-23-0277.1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract The South Pacific Oscillation (SPO), characterized by a north-south dipole-like pattern of sea level pressure anomalies, is one of the key factors in understanding tropical-extratropical interactions in South Pacific. We show that in boreal summer (June–July–August), the center of the northern lobe sea level pressure anomalies in the SPO is shifted to the east gradually after the 1960–70s. This study focuses on the relationship between the boreal summer SPO and following winter El Niño–Southern Oscillation (ENSO) diversity before and after the eastward shift of the SPO’s subtropical lobe. The eastward shift of the SPO’s subtropical lobe altered both the seasonal footprint mechanism and the trade wind charging mechanism associated with the SPO, thus profoundly influenced the ENSO diversity. It is revealed that when the northern lobe of the SPO shifts to the west of its average location, it tends to strengthen the EP El Niño mainly via the seasonal footprint mechanism. but after the SPO’s northern lobe shifts to the east of its average location, it tends to promote the development of CP El Niño mainly via the trade wind charging mechanism. The changes in the spatial structure of convection over the tropical Pacific and Indian Ocean may be one of the possible causes for the eastward shift in the SPO’s northern lobe. The findings in the present study have implications for a better understanding of ENSO diversity.\",\"PeriodicalId\":15472,\"journal\":{\"name\":\"Journal of Climate\",\"volume\":\"20 1\",\"pages\":\"\"},\"PeriodicalIF\":4.8000,\"publicationDate\":\"2024-04-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Climate\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.1175/jcli-d-23-0277.1\",\"RegionNum\":2,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"METEOROLOGY & ATMOSPHERIC SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Climate","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1175/jcli-d-23-0277.1","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"METEOROLOGY & ATMOSPHERIC SCIENCES","Score":null,"Total":0}
引用次数: 0

摘要

摘要 南太平洋涛动(SPO)的特点是海平面气压异常的南北偶极模式,是了解南太平洋热带-南极热带相互作用的关键因素之一。我们的研究表明,在北半球夏季(6 月-7 月-8 月),SPO 的北翼海平面气压异常中心在 1960-70 年代后逐渐东移。本研究的重点是 SPO 副热带叶东移前后北方夏季 SPO 与次年冬季厄尔尼诺-南方涛动(ENSO)多样性之间的关系。SPO 副热带叶的东移改变了与 SPO 相关的季节足迹机制和信风充电机制,从而深刻影响了厄尔尼诺-南方涛动的多样性。结果表明,当 SPO 的北叶向其平均位置以西移动时,它主要通过季节足迹机制加强 EP 厄尔尼诺;而当 SPO 的北叶向其平均位置以东移动后,它主要通过贸易风充电机制促进 CP 厄尔尼诺的发展。热带太平洋和印度洋对流空间结构的变化可能是 SPO 北叶东移的原因之一。本研究的发现对更好地理解厄尔尼诺/南方涛动的多样性具有重要意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The interdecadal changes in the spatial structure of the South Pacific Oscillation and its implication for ENSO diversity
Abstract The South Pacific Oscillation (SPO), characterized by a north-south dipole-like pattern of sea level pressure anomalies, is one of the key factors in understanding tropical-extratropical interactions in South Pacific. We show that in boreal summer (June–July–August), the center of the northern lobe sea level pressure anomalies in the SPO is shifted to the east gradually after the 1960–70s. This study focuses on the relationship between the boreal summer SPO and following winter El Niño–Southern Oscillation (ENSO) diversity before and after the eastward shift of the SPO’s subtropical lobe. The eastward shift of the SPO’s subtropical lobe altered both the seasonal footprint mechanism and the trade wind charging mechanism associated with the SPO, thus profoundly influenced the ENSO diversity. It is revealed that when the northern lobe of the SPO shifts to the west of its average location, it tends to strengthen the EP El Niño mainly via the seasonal footprint mechanism. but after the SPO’s northern lobe shifts to the east of its average location, it tends to promote the development of CP El Niño mainly via the trade wind charging mechanism. The changes in the spatial structure of convection over the tropical Pacific and Indian Ocean may be one of the possible causes for the eastward shift in the SPO’s northern lobe. The findings in the present study have implications for a better understanding of ENSO diversity.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Journal of Climate
Journal of Climate 地学-气象与大气科学
CiteScore
9.30
自引率
14.30%
发文量
490
审稿时长
7.5 months
期刊介绍: The Journal of Climate (JCLI) (ISSN: 0894-8755; eISSN: 1520-0442) publishes research that advances basic understanding of the dynamics and physics of the climate system on large spatial scales, including variability of the atmosphere, oceans, land surface, and cryosphere; past, present, and projected future changes in the climate system; and climate simulation and prediction.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信