Ventilation of the Southern Ocean Pycnocline.

IF 14.3 1区 地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS
Adele K Morrison, Darryn W Waugh, Andrew McC Hogg, Daniel C Jones, Ryan P Abernathey
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引用次数: 16

Abstract

Ocean ventilation is the transfer of tracers and young water from the surface down into the ocean interior. The tracers that can be transported to depth include anthropogenic heat and carbon, both of which are critical to understanding future climate trajectories. Ventilation occurs in both high- and midlatitude regions, but it is the southern midlatitudes that are responsible for the largest fraction of anthropogenic heat and carbon uptake; such Southern Ocean ventilation is the focus of this review. Southern Ocean ventilation occurs through a chain of interconnected mechanisms, including the zonally averaged meridional overturning circulation, localized subduction, eddy-driven mixing along isopycnals, and lateral transport by subtropical gyres. To unravel the complex pathways of ventilation and reconcile conflicting results, here we assess the relative contribution of each of thesemechanisms, emphasizing the three-dimensional and temporally varying nature of the ventilation of the Southern Ocean pycnocline. We conclude that Southern Ocean ventilation depends on multiple processes and that simplified frameworks that explain ventilation changes through a single process are insufficient.

南大洋背斜的通风。
海洋通风是将示踪剂和年轻的水从表面转移到海洋内部。可以被输送到深海的示踪剂包括人为的热量和碳,这两者对于理解未来的气候轨迹都是至关重要的。通风发生在高纬度和中纬度地区,但南中纬度地区是人为热量和碳吸收的最大部分;这样的南大洋通风是本综述的重点。南大洋通风是通过一系列相互关联的机制发生的,包括纬向平均经向翻转环流、局部俯冲、沿等平面线的涡旋驱动混合以及副热带环流的横向输送。为了揭示复杂的通风途径并调和相互矛盾的结果,我们在这里评估了这些机制的相对贡献,强调了南大洋斜斜通风的三维和时间变化性质。我们的结论是,南大洋的通风取决于多个过程,通过单一过程解释通风变化的简化框架是不够的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Annual Review of Marine Science
Annual Review of Marine Science 地学-地球化学与地球物理
CiteScore
33.60
自引率
0.60%
发文量
40
期刊介绍: The Annual Review of Marine Science, published since 2009, offers a comprehensive overview of the field. It covers various disciplines, including coastal and blue water oceanography (biological, chemical, geological, and physical), ecology, conservation, and technological advancements related to the marine environment. The journal's transition from gated to open access through Annual Reviews' Subscribe to Open program ensures that all articles are available under a CC BY license, promoting wider accessibility and dissemination of knowledge.
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