Barotropic and Baroclinic Inverse Kinetic Energy Cascade in the Antarctic Circumpolar Current
文献类型：期刊论文
| 作者 | Xu YS(徐永生)
|
| 刊名 | JOURNAL OF PHYSICAL OCEANOGRAPHY
 |
| 出版日期 | 2021 |
| 卷号 | 51期号:3页码:809-824 |
| ISSN号 | 0022-3670 |
| 关键词 | Baroclinic flows Barotropic flows Antarctica Energy transport Fluxes Jets |
| DOI | 10.1175/JPO-D-20-0053.1 |
| 通讯作者 | Xu, Yongsheng(yongsheng.xu@alumni.caltech.edu) |
| 英文摘要 | Stratifified geostrophic turbulence theory predicts an inverse energy cascade for the barotropic (BT)
mode. Satellite altimetry has revealed a net inverse cascade in the baroclinic (BC) mode. Here the spatial variabilities
of BT and BC kinetic energy flfluxes in the Antarctic Circumpolar Current (ACC) were investigated using ECCO2 data,
which synthesize satellite data and in situ measurements with an eddy-permitting general circulation model containing
realistic bathymetry and wind forcing. The BT and BC inverse kinetic energy cascades both reveal complex spatial
variations that could not be explained fully by classical arguments. For example, the BC injection scales match better
with most unstable scales than with the fifirst-mode deformation scales, but the opposite is true for the BT mode. In
addition, the BT and BC arrest scales do not follow the Rhines scale well in terms of spatial variation, but show better
consistency with their own energy-containing scales. The reverse cascade of the BT and BC modes was found related
to their EKE, and better correlation was found between the BT inverse cascade and barotropization. Speculations of
the fifindings were proposed; however, further observations and modeling experiments are needed to test these in
terpretations. Spectral flflux anisotropy exhibits a feature associated with oceanic jets that is consistent with classical
expectations. Specififically, the spectral flflux along the along-stream direction remains negative at scales up to that of the
studied domain (;2000 km), while that in the perpendicular direction becomes positive close to the scale of the width
of a typical jet. |
| 资助项目 | National Key Research andDevelopment Program[2016YFC1401004] ; National Key Research andDevelopment Program[2019YFC1509102] ; National Natural Science Foundation of China[41421005] ; National Natural Science Foundation of China[41676168] ; National Natural Science Foundation of China[41376028] ; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2018SDKJ0102-7] ; Open Fund of Key Laboratory ofOcean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences[2018HX020] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406401] |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| 出版者 | AMER METEOROLOGICAL SOC |
| WOS记录号 | WOS:000646380100010 |
| 版本 | 出版稿 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/170558]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Xu YS. Barotropic and Baroclinic Inverse Kinetic Energy Cascade in the Antarctic Circumpolar Current[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2021,51(3):809-824. |
| APA | Xu YS.(2021).Barotropic and Baroclinic Inverse Kinetic Energy Cascade in the Antarctic Circumpolar Current.JOURNAL OF PHYSICAL OCEANOGRAPHY,51(3),809-824. |
| MLA | Xu YS."Barotropic and Baroclinic Inverse Kinetic Energy Cascade in the Antarctic Circumpolar Current".JOURNAL OF PHYSICAL OCEANOGRAPHY 51.3(2021):809-824. |
入库方式： OAI收割
来源：海洋研究所
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