全球海洋洛伦兹能量循环的敏感性

IF 2.2 3区 地球科学 Q2 OCEANOGRAPHY Ocean Dynamics Pub Date : 2023-09-27 DOI:10.1007/s10236-023-01568-6
John Ssebandeke, Jin-Song von Storch, Nils Brüggemann
{"title":"全球海洋洛伦兹能量循环的敏感性","authors":"John Ssebandeke, Jin-Song von Storch, Nils Brüggemann","doi":"10.1007/s10236-023-01568-6","DOIUrl":null,"url":null,"abstract":"Abstract We re-examine the Lorenz energy cycle (LEC) for the global ocean by assessing its sensitivity to model and forcing differences. We do so by comparing LECs derived from two simulations based on different eddy-rich ocean models, ICON-O and MPI-OM, both driven by NCEP/NCAR reanalysis, and by comparing LECs derived from two simulations generated using ICON-O model but driven by two different reanalyses, NCEP/NCAR and ERA5. Regarding model difference, we find weaker eddy kinetic energy, $$k_e$$ <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"> <mml:msub> <mml:mi>k</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> , in the ICON-O simulation than in the MPI-OM simulation. We attribute this to the higher horizontal resolution of MPI-OM in the Southern Ocean. The weaker $$k_e$$ <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"> <mml:msub> <mml:mi>k</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> in ICON-O is not caused by the lack of eddy available potential energy, $$p_e$$ <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"> <mml:msub> <mml:mi>p</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> , but by the strong dissipation of $$p_e$$ <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"> <mml:msub> <mml:mi>p</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> and the resulting weak conversion from $$p_e$$ <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"> <mml:msub> <mml:mi>p</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> to $$k_e$$ <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"> <mml:msub> <mml:mi>k</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> . Regarding forcing difference, we find that considerably more mechanical energy is generated by the ERA5 forcing, which has a higher spatial-temporal resolution compared to the NCEP/NCAR forcing. In particular, the generation of $$k_e$$ <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"> <mml:msub> <mml:mi>k</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> , which also contains the resolved part of the internal wave spectrum, is enhanced by about 1 TW (40%). However, the dominance of the baroclinic and the barotropic pathways forces the enhanced generation of $$k_e$$ <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"> <mml:msub> <mml:mi>k</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> to be balanced by an enhanced dissipation in the surface layer. The gross features of LEC are insensitive to both model and forcing differences, picturing the ocean as an inefficient “windmill” that converts only a small portion of the inputted mechanical energy into the interior mean and transient circulations.","PeriodicalId":19387,"journal":{"name":"Ocean Dynamics","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Sensitivity of the Lorenz energy cycle of the global ocean\",\"authors\":\"John Ssebandeke, Jin-Song von Storch, Nils Brüggemann\",\"doi\":\"10.1007/s10236-023-01568-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract We re-examine the Lorenz energy cycle (LEC) for the global ocean by assessing its sensitivity to model and forcing differences. We do so by comparing LECs derived from two simulations based on different eddy-rich ocean models, ICON-O and MPI-OM, both driven by NCEP/NCAR reanalysis, and by comparing LECs derived from two simulations generated using ICON-O model but driven by two different reanalyses, NCEP/NCAR and ERA5. Regarding model difference, we find weaker eddy kinetic energy, $$k_e$$ <mml:math xmlns:mml=\\\"http://www.w3.org/1998/Math/MathML\\\"> <mml:msub> <mml:mi>k</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> , in the ICON-O simulation than in the MPI-OM simulation. We attribute this to the higher horizontal resolution of MPI-OM in the Southern Ocean. The weaker $$k_e$$ <mml:math xmlns:mml=\\\"http://www.w3.org/1998/Math/MathML\\\"> <mml:msub> <mml:mi>k</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> in ICON-O is not caused by the lack of eddy available potential energy, $$p_e$$ <mml:math xmlns:mml=\\\"http://www.w3.org/1998/Math/MathML\\\"> <mml:msub> <mml:mi>p</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> , but by the strong dissipation of $$p_e$$ <mml:math xmlns:mml=\\\"http://www.w3.org/1998/Math/MathML\\\"> <mml:msub> <mml:mi>p</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> and the resulting weak conversion from $$p_e$$ <mml:math xmlns:mml=\\\"http://www.w3.org/1998/Math/MathML\\\"> <mml:msub> <mml:mi>p</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> to $$k_e$$ <mml:math xmlns:mml=\\\"http://www.w3.org/1998/Math/MathML\\\"> <mml:msub> <mml:mi>k</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> . Regarding forcing difference, we find that considerably more mechanical energy is generated by the ERA5 forcing, which has a higher spatial-temporal resolution compared to the NCEP/NCAR forcing. In particular, the generation of $$k_e$$ <mml:math xmlns:mml=\\\"http://www.w3.org/1998/Math/MathML\\\"> <mml:msub> <mml:mi>k</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> , which also contains the resolved part of the internal wave spectrum, is enhanced by about 1 TW (40%). However, the dominance of the baroclinic and the barotropic pathways forces the enhanced generation of $$k_e$$ <mml:math xmlns:mml=\\\"http://www.w3.org/1998/Math/MathML\\\"> <mml:msub> <mml:mi>k</mml:mi> <mml:mi>e</mml:mi> </mml:msub> </mml:math> to be balanced by an enhanced dissipation in the surface layer. The gross features of LEC are insensitive to both model and forcing differences, picturing the ocean as an inefficient “windmill” that converts only a small portion of the inputted mechanical energy into the interior mean and transient circulations.\",\"PeriodicalId\":19387,\"journal\":{\"name\":\"Ocean Dynamics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2023-09-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ocean Dynamics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1007/s10236-023-01568-6\",\"RegionNum\":3,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"OCEANOGRAPHY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ocean Dynamics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/s10236-023-01568-6","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OCEANOGRAPHY","Score":null,"Total":0}
引用次数: 0

摘要

通过评估全球海洋的洛伦兹能量循环对模式和强迫差异的敏感性,我们重新审视了全球海洋的洛伦兹能量循环。我们通过比较基于NCEP/NCAR再分析驱动的ICON-O和MPI-OM两种不同富涡海洋模型的模拟结果得出的LECs,以及通过比较由ICON-O模型生成但由NCEP/NCAR和ERA5两种不同再分析驱动的两个模拟结果得出的LECs。在模式差异方面,ICON-O模拟的涡动能$$k_e$$ ke比MPI-OM模拟的弱。我们将此归因于南大洋MPI-OM的水平分辨率较高。ICON-O中较弱的$$k_e$$ ke不是由于缺乏涡动有效势能$$p_e$$ p e造成的,而是由于$$p_e$$ p e的强耗散以及由此产生的从$$p_e$$ p e到$$k_e$$ ke的弱转换。在强迫差异方面,ERA5强迫产生的机械能明显高于NCEP/NCAR强迫,且具有更高的时空分辨率。特别是,$$k_e$$ k e的生成,也包含了内波谱的分解部分,增强了约1 TW (40)%). However, the dominance of the baroclinic and the barotropic pathways forces the enhanced generation of $$k_e$$ k e to be balanced by an enhanced dissipation in the surface layer. The gross features of LEC are insensitive to both model and forcing differences, picturing the ocean as an inefficient “windmill” that converts only a small portion of the inputted mechanical energy into the interior mean and transient circulations.
本文章由计算机程序翻译,如有差异,请以英文原文为准。

摘要图片

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
Sensitivity of the Lorenz energy cycle of the global ocean
Abstract We re-examine the Lorenz energy cycle (LEC) for the global ocean by assessing its sensitivity to model and forcing differences. We do so by comparing LECs derived from two simulations based on different eddy-rich ocean models, ICON-O and MPI-OM, both driven by NCEP/NCAR reanalysis, and by comparing LECs derived from two simulations generated using ICON-O model but driven by two different reanalyses, NCEP/NCAR and ERA5. Regarding model difference, we find weaker eddy kinetic energy, $$k_e$$ k e , in the ICON-O simulation than in the MPI-OM simulation. We attribute this to the higher horizontal resolution of MPI-OM in the Southern Ocean. The weaker $$k_e$$ k e in ICON-O is not caused by the lack of eddy available potential energy, $$p_e$$ p e , but by the strong dissipation of $$p_e$$ p e and the resulting weak conversion from $$p_e$$ p e to $$k_e$$ k e . Regarding forcing difference, we find that considerably more mechanical energy is generated by the ERA5 forcing, which has a higher spatial-temporal resolution compared to the NCEP/NCAR forcing. In particular, the generation of $$k_e$$ k e , which also contains the resolved part of the internal wave spectrum, is enhanced by about 1 TW (40%). However, the dominance of the baroclinic and the barotropic pathways forces the enhanced generation of $$k_e$$ k e to be balanced by an enhanced dissipation in the surface layer. The gross features of LEC are insensitive to both model and forcing differences, picturing the ocean as an inefficient “windmill” that converts only a small portion of the inputted mechanical energy into the interior mean and transient circulations.
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
Ocean Dynamics
Ocean Dynamics 地学-海洋学
CiteScore
5.40
自引率
0.00%
发文量
37
审稿时长
6-12 weeks
期刊介绍: Ocean Dynamics is an international journal that aims to publish high-quality peer-reviewed articles in the following areas of research: Theoretical oceanography (new theoretical concepts that further system understanding with a strong view to applicability for operational or monitoring purposes); Computational oceanography (all aspects of ocean modeling and data analysis); Observational oceanography (new techniques or systematic approaches in measuring oceanic variables, including all aspects of monitoring the state of the ocean); Articles with an interdisciplinary character that encompass research in the fields of biological, chemical and physical oceanography are especially encouraged.
期刊最新文献
A new high-resolution Coastal Ice-Ocean Prediction System for the East Coast of Canada Improvement of drag coefficient parameterization of WAVEWATCH-III using remotely sensed products during tropical cyclones Surface ocean conditions of the Arabian Sea using two different wind forcings in the regional ocean modelling system setup Assessment of tidal current potential in the Amapá’s inner continental shelf (Eastern Amazonia - Brazil) Aggregation and transport of microplastics by a cold-core ring in the southern recirculation of the Kuroshio Extension: the role of mesoscale eddies on plastic debris distribution
×
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