Distinct roles of global cyclonic and anticyclonic eddies in regulating near-inertial internal waves in the ocean interior

被引：2

作者：

Yuan, Man ^{[1
,2
,3
]}

Song, Zhuo ^{[1
,2
,3
]}

Jing, Zhao ^{[1
,2
,3
]}

Li, Zhuoran ^{[1
,2
,3
]}

Wu, Lixin ^{[1
,2
,3
]}

机构：

[1] Ocean Univ China, Frontier Sci Ctr Deep Ocean Multispheres & Earth S, Qingdao, Peoples R China

[2] Ocean Univ China, Phys Oceanog Lab, Qingdao, Peoples R China

[3] Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China

来源：

FRONTIERS IN MARINE SCIENCE | 2022年 / 9卷

基金：

美国国家科学基金会;

关键词：

mesoscale eddies; near-inertial internal waves; turbulent vertical mixing; coupled global climate models; community earth system model; BOUNDARY-LAYER; ENERGY FLUX; WIND; PROPAGATION; SURFACE; MODEL; OSCILLATIONS;

D O I：

10.3389/fmars.2022.949610

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, we examine the regulation of wind-powered near-inertial internal waves (NIWs) in the ocean interior by mesoscale eddies, using an eddy-resolving global climate model. There is an enhancement (weakening) of NIW activity within anticyclonic (cyclonic) eddies from the surface boundary layer (SBL) base down to similar to 4,000 m, associated with a decreased (increased) wave vertical scale. The influence of anticyclonic eddies on NIW activity is more pronounced than that of cyclonic eddies, suggesting that the net effect of mesoscale eddies is to intensify the NIWs in the ocean interior. The enhanced (weakened) NIW activity under the SBL in anticyclonic (cyclonic) eddies is ascribed to both horizontal convergence (divergence) of NIW energy flux under the SBL and increased (decreased) downward NIW energy flux from the SBL base. The former is only confined to a layer within several hundred meters under the SBL, whereas the latter becomes dominant in the deeper ocean.

引用

页数：10