The Effect of Ocean Ventilation on the Transient Climate Response to Emissions
The Effect of Ocean Ventilation on the Transient Climate Response to Emissions
复制标题
海洋通风对排放的瞬态气候响应的影响
DOI：
10.1175/jcli-d-18-0829.1
复制
发表时间：
2019
影响因子：
4.9
通讯作者：
P. Goodwin
中科院分区：
文献类型：
--
作者：
Anna Katavouta;Richard G. Williams;P. Goodwin
海洋对碳排放的表面变暖反应受到海洋如何隔离提供给气候系统的多余热量和碳的影响。这种海洋吸收涉及通风机制，混合层吸收热量和碳，并将其转移到温跃层和深海。海洋通风对地表变暖对碳排放的响应的影响进行了探讨，使用简化的概念模型的大气和海洋，并没有明确表示的纬向翻转。敏感性实验进行调查的影响（一）混合层厚度，（二）通风率的海洋内部，（三）强度的纬向翻转，（四）在南大洋的俯冲程度。我们的诊断集中在气候指标，瞬态气候对碳排放的响应（TCRE），由表面变暖与累积碳排放的比率定义，可以用单独的热量和碳贡献来表示。由于海洋通风的变化，在热贡献的变化占主导地位的TCRE从几年到几个世纪的时间尺度上的变化，而碳的贡献占主导地位的时间尺度从几个世纪到几千年。这些通风控制主要来自混合层厚度在十年时间尺度上的变化，以及从混合层到温跃层和深海的通风转移速率在百年和千年时间尺度上的变化，这本身就受到南大洋俯冲的强度和俯冲程度的影响。
The surface warming response to carbon emissions is affected by how the ocean sequesters excess heat and carbon supplied to the climate system. This ocean uptake involves the ventilation mechanism, where heat and carbon are taken up by the mixed layer and transferred to the thermocline and deep ocean. The effect of ocean ventilation on the surface warming response to carbon emissions is explored using simplified conceptual models of the atmosphere and ocean with and without explicit representation of the meridional overturning. Sensitivity experiments are conducted to investigate the effects of (i) mixed layer thickness, (ii) rate of ventilation of the ocean interior, (iii) strength of the meridional overturning, and (iv) extent of subduction in the Southern Ocean. Our diagnostics focus on a climate metric, the transient climate response to carbon emissions (TCRE), defined by the ratio of surface warming to the cumulative carbon emissions, which may be expressed in terms of separate thermal and carbon contributions. The variability in the thermal contribution due to changes in ocean ventilation dominates the variability in the TCRE on time scales from years to centuries, while that of the carbon contribution dominates on time scales from centuries to millennia. These ventilated controls are primarily from changes in the mixed layer thickness on decadal time scales, and in the rate of ventilated transfer from the mixed layer to the thermocline and deep ocean on centennial and millennial time scales, which is itself affected by the strength of the meridional overturning and extent of subduction in the Southern Ocean.
影响因子：
18.3
作者：
P. Goodwin;Richard G. Williams;A. Ridgwell;M. Follows
通讯作者：
P. Goodwin;Richard G. Williams;A. Ridgwell;M. Follows
机械驱动经向翻转环流与温盐强迫和多重平衡理论的协调
影响因子：
4.6
作者：
Johnson H
通讯作者：
Johnson H
碳排放停止后地表持续变暖的驱动因素
影响因子：
5.2
作者：
Williams R
通讯作者：
Williams R