Patterns of kinetic energy conversion in a time-average upper ocean

IF 3.8 3区 地球科学 Q1 OCEANOGRAPHY
Carl Wunsch
{"title":"Patterns of kinetic energy conversion in a time-average upper ocean","authors":"Carl Wunsch","doi":"10.1016/j.pocean.2025.103453","DOIUrl":null,"url":null,"abstract":"<div><div>Patterns of the spatial fluxes and conversion of oceanic kinetic energy are explored using a 26-year temporal average of a dynamically consistent ECCO state estimate. Because thermal-wind balance is found to be accurate over much of the ocean domain, and with correspondingly small Rossby numbers, a linear analysis is used. Despite the averaging the abyssal ocean average proves remarkably noisy, and thus the focus is on the upper ocean and using the surface layer to 50 m, and depths of 300, 2000, and 3000 m as representative. Surface patterns to 300 m are broadly consistent with what is expected from wind-forcing via Ekman layers. At 2000 m, north of the equator, the flow of North Atlantic Deep Water is dominated by interior flow, and not by the western boundary current used in some over-simplified descriptions. By 3000 m, fluxes are spatially intricate, and presumed to represent the effects of incompletely resolved topographic features. Deep western boundary currents are prominent in kinetic energy, with the surprising exception of the northern North Atlantic and have a complex structure. The complexity of the oceanic container (topography and lateral boundaries) controls much of the circulation when averaged over decades.</div></div>","PeriodicalId":20620,"journal":{"name":"Progress in Oceanography","volume":"234 ","pages":"Article 103453"},"PeriodicalIF":3.8000,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress in Oceanography","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0079661125000412","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OCEANOGRAPHY","Score":null,"Total":0}
引用次数: 0

Abstract

Patterns of the spatial fluxes and conversion of oceanic kinetic energy are explored using a 26-year temporal average of a dynamically consistent ECCO state estimate. Because thermal-wind balance is found to be accurate over much of the ocean domain, and with correspondingly small Rossby numbers, a linear analysis is used. Despite the averaging the abyssal ocean average proves remarkably noisy, and thus the focus is on the upper ocean and using the surface layer to 50 m, and depths of 300, 2000, and 3000 m as representative. Surface patterns to 300 m are broadly consistent with what is expected from wind-forcing via Ekman layers. At 2000 m, north of the equator, the flow of North Atlantic Deep Water is dominated by interior flow, and not by the western boundary current used in some over-simplified descriptions. By 3000 m, fluxes are spatially intricate, and presumed to represent the effects of incompletely resolved topographic features. Deep western boundary currents are prominent in kinetic energy, with the surprising exception of the northern North Atlantic and have a complex structure. The complexity of the oceanic container (topography and lateral boundaries) controls much of the circulation when averaged over decades.
求助全文
约1分钟内获得全文 求助全文
来源期刊
Progress in Oceanography
Progress in Oceanography 地学-海洋学
CiteScore
7.20
自引率
4.90%
发文量
138
审稿时长
3 months
期刊介绍: Progress in Oceanography publishes the longer, more comprehensive papers that most oceanographers feel are necessary, on occasion, to do justice to their work. Contributions are generally either a review of an aspect of oceanography or a treatise on an expanding oceanographic subject. The articles cover the entire spectrum of disciplines within the science of oceanography. Occasionally volumes are devoted to collections of papers and conference proceedings of exceptional interest. Essential reading for all oceanographers.
×
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