Global Calculations of Local and Remote Near-Inertial-Wave Dissipation

被引：26

作者：

Alford, Matthew H. ^{[1
]}

机构：

[1] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA

来源：

JOURNAL OF PHYSICAL OCEANOGRAPHY | 2020年 / 50卷 / 11期

关键词：

Internal waves; ENERGY FLUX; OCEAN; WIND; SURFACE; DRIVEN; GENERATION; MODELS; SWELL;

D O I：

10.1175/JPO-D-20-0106.1

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

Global estimates are presented of the fraction q of wind-generated near-inertial wave power available for local turbulent dissipation under the assumption that modes 1-3 propagate "far'' and the higher modes remain to eventually break. Using climatological stratification profiles and mixed layer depth, the modal distribution of near-inertial energy flux is computed following Gill's classic 1984 work by projecting a slab flow in the mixed layer onto the dynamical modes. Global maps and zonal-mean profiles are presented, which show a global-mean value of q = 0.63 and 0.75 for winter and summer profiles, respectively. The simplicity of the calculation makes it of potential use in parameterizations of near-inertial breaking in climate simulations.

引用

页码：3157 / 3164

页数：8

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