Do Extratropical Cyclones Impact Synoptic-Scale Variability of the Arctic Oscillation During Cold Season?

IF 4.6 1区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY Geophysical Research Letters Pub Date : 2025-01-18 DOI:10.1029/2024GL112747
Shengyi Qian, Haibo Hu, Kevin I. Hodges, Xiu-Qun Yang
{"title":"Do Extratropical Cyclones Impact Synoptic-Scale Variability of the Arctic Oscillation During Cold Season?","authors":"Shengyi Qian,&nbsp;Haibo Hu,&nbsp;Kevin I. Hodges,&nbsp;Xiu-Qun Yang","doi":"10.1029/2024GL112747","DOIUrl":null,"url":null,"abstract":"<p>The Arctic Oscillation (AO) is the most significant mode of sea level pressure (SLP) anomalies in the Northern Hemisphere, exhibiting significant multiple-timescale variability from synoptic to decadal. Using NCEP Climate Forecast System Reanalysis data from 1979 to 2022 during the cold season (November–April), this study identifies the relationship between the number of extra-tropical cyclones entering and exiting the Arctic and the AO synoptic variability. The Joint Net Cyclone Flux (JNCF) is significantly correlated with the spatio-temporal evolution of the synoptic AO and the composites of SLP associated with the JNCF produce AO-like patterns. Subsequent piecewise potential vorticity inversion reveals the impacts of extratropical cyclones on the synoptic-scale AO-like geopotential height anomalies at different altitudes. The effects of extratropical cyclones are more important than Arctic stratospheric PV intrusions. Furthermore, the upper-level dynamic processes among all extratropical cyclone effects dominate the evolution of synoptic-scale AO-like geopotential height anomalies.</p>","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"52 2","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024GL112747","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geophysical Research Letters","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1029/2024GL112747","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

The Arctic Oscillation (AO) is the most significant mode of sea level pressure (SLP) anomalies in the Northern Hemisphere, exhibiting significant multiple-timescale variability from synoptic to decadal. Using NCEP Climate Forecast System Reanalysis data from 1979 to 2022 during the cold season (November–April), this study identifies the relationship between the number of extra-tropical cyclones entering and exiting the Arctic and the AO synoptic variability. The Joint Net Cyclone Flux (JNCF) is significantly correlated with the spatio-temporal evolution of the synoptic AO and the composites of SLP associated with the JNCF produce AO-like patterns. Subsequent piecewise potential vorticity inversion reveals the impacts of extratropical cyclones on the synoptic-scale AO-like geopotential height anomalies at different altitudes. The effects of extratropical cyclones are more important than Arctic stratospheric PV intrusions. Furthermore, the upper-level dynamic processes among all extratropical cyclone effects dominate the evolution of synoptic-scale AO-like geopotential height anomalies.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
温带气旋是否影响寒冷季节北极涛动的天气尺度变率?
北极涛动(AO)是北半球海平面气压(SLP)异常的最重要模态,表现出从天气到年代际的显著多时间尺度变化。利用1979 ~ 2022年寒季(11 ~ 4月)NCEP气候预报系统再分析资料,研究了进入和离开北极的热带外气旋数量与AO天气变率的关系。联合净气旋通量(Joint Net Cyclone Flux, JNCF)与天气性AO的时空演变有显著的相关性,与JNCF相关的SLP复合会产生类似AO的模式。随后的逐段位涡度反演揭示了温带气旋对不同高度的天气尺度类ao位势高度异常的影响。温带气旋的影响比北极平流层PV入侵更重要。此外,所有温带气旋效应中的高层动力过程主导了天气尺度类ao位势高度异常的演变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Geophysical Research Letters
Geophysical Research Letters 地学-地球科学综合
CiteScore
9.00
自引率
9.60%
发文量
1588
审稿时长
2.2 months
期刊介绍: Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.
期刊最新文献
Ocean Response Along the East Antarctic Coastal Margin to the Southern Annular Mode The Distribution of Linear Virgae Across the Saturnian Moons Hydrogen Generation and Serpentinization of Olivine Under Flow Conditions Quantifying the Effects of Solar Wind Fluctuations on the Solar Wind-Magnetosphere Interaction Increased Asymmetry of Ecosystem Productivity Responses to Precipitation in Recent Two Decades
×
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
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1