Transport and storage of anthropogenic C in the North Atlantic Subpolar Ocean
Transport and storage of anthropogenic C in the North Atlantic Subpolar Ocean
复制标题
北大西洋次极地人为碳的运输和储存
DOI：
10.5194/bg-15-4661-2018
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发表时间：
2018
期刊：
影响因子：
4.9
通讯作者：
M. Gehlen
中科院分区：
文献类型：
--
作者：
V. Racapé;P. Zunino;H. Mercier;P. Lherminier;L. Bopp;F. F. Pérèz;M. Gehlen
抽象的。北大西洋是大气的主要汇区
CO2 并有助于储存人为碳 (Cant)。
虽然人们普遍认为经向的强度
翻转循环 (MOC) 调节 Cant 的吸收、运输和储存
在北大西洋次极地海洋中，控制其最近的过程
21世纪的变化和演变仍然不确定。这
研究调查了运输、海气通量和
过去 53 年北大西洋副极地海洋 Cant 的储存率
年。它依赖于多年现场数据的综合分析
全球生物地球化学海洋环流模型的集合和输出
(NEMO–PISCES) 受大气影响，空间分辨率为 1∕2∘
重新分析。尽管低估了 Cant 运输和
模型中人为造成的海气二氧化碳通量的高估，
区域超高蓄水率的年际变化及其驱动因素
该模型很好地模拟了过程。数十年分析
模拟表明 MOC 强度变化是主要驱动因素
25 和 36∘ N 处的 Cant 传输变异性，但 OVIDE 处没有。
在副极地 OVIDE 剖面，Cant 输运的年际变化
是由 MOC 上肢 Cant 的积累控制的。在
数十年时间尺度，北大西洋储存的长期变化
坎特率是由人为的海气通量增加驱动的
二氧化碳。北大西洋中央水库在储存坎特方面发挥了关键作用
位于亚热带地区的上层，用于向
中层水和北大西洋深水。坎特的转会来自
表层到深水区主要发生在 OVIDE 剖面以北。大部分
转移到深海的坎特被储存在副极地地区，而
其余部分被输出到较低 MOC 内的副热带环流。
Abstract. The North Atlantic Ocean is a major sink region for atmospheric
CO2 and contributes to the storage of anthropogenic carbon (Cant).
While there is general agreement that the intensity of the meridional
overturning circulation (MOC) modulates uptake, transport and storage of Cant
in the North Atlantic Subpolar Ocean, processes controlling their recent
variability and evolution over the 21st century remain uncertain. This
study investigates the relationship between transport, air–sea flux and
storage rate of Cant in the North Atlantic Subpolar Ocean over the past 53
years. Its relies on the combined analysis of a multiannual in situ data
set and outputs from a global biogeochemical ocean general circulation model
(NEMO–PISCES) at 1∕2∘ spatial resolution forced by an atmospheric
reanalysis. Despite an underestimation of Cant transport and an
overestimation of anthropogenic air–sea CO2 flux in the model, the
interannual variability of the regional Cant storage rate and its driving
processes were well simulated by the model. Analysis of the multi-decadal
simulation revealed that the MOC intensity variability was the major driver
of the Cant transport variability at 25 and 36∘ N, but not at OVIDE.
At the subpolar OVIDE section, the interannual variability of Cant transport
was controlled by the accumulation of Cant in the MOC upper limb. At
multi-decadal timescales, long-term changes in the North Atlantic storage
rate of Cant were driven by the increase in air–sea fluxes of anthropogenic
CO2. North Atlantic Central Water played a key role for storing Cant
in the upper layer of the subtropical region and for supplying Cant to
Intermediate Water and North Atlantic Deep Water. The transfer of Cant from
surface to deep waters occurred mainly north of the OVIDE section. Most of
the Cant transferred to the deep ocean was stored in the subpolar region, while the
remainder was exported to the subtropical gyre within the lower MOC.
副热带北大西洋水团中人为二氧化碳的趋势
影响因子：
4.1
作者：
Guallart E
通讯作者：
Guallart E
DOI：
10.1016/j.dsr2.2010.10.061
发表时间：
2011-09-01
影响因子：
3
作者：
Rhein, Monika;Kieke, Dagmar;Yashayaev, Igor
通讯作者：
Yashayaev, Igor