Central role of Southern Hemisphere winds and eddies in modulating the oceanic uptake of anthropogenic carbon
Central role of Southern Hemisphere winds and eddies in modulating the oceanic uptake of anthropogenic carbon
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DOI：
10.1029/2005gl024464
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发表时间：
2006-01-07
影响因子：
5.2
通讯作者：
Slater, RD
中科院分区：
文献类型：
--
作者：
Mignone, BK;Gnanadesikan, A;Slater, RD
虽然世界海洋被认为是人类活动产生的二氧化碳的主要汇，但对碳吸收的规模和区域分布的确切过程仍然知之甚少。在这里，我们表明，南半球的风，通过改变Ekman体积运输出南大洋，强烈地控制区域分布的人为吸收的海洋环流模式，而风和等密厚度混合在一起，通过改变体积的光，积极通风的海水，施加强有力的控制人为吸收的绝对幅度。这些结果是挑衅性的，表明气候介导的密度跃层体积的变化可能最终控制未来碳吸收的变化。
Although the world ocean is known to be a major sink of anthropogenic carbon dioxide, the exact processes governing the magnitude and regional distribution of carbon uptake remain poorly understood. Here we show that Southern Hemisphere winds, by altering the Ekman volume transport out of the Southern Ocean, strongly control the regional distribution of anthropogenic uptake in an ocean general circulation model, while winds and isopycnal thickness mixing together, by altering the volume of light, actively-ventilated ocean water, exert strong control over the absolute magnitude of anthropogenic uptake. These results are provocative in suggesting that climate-mediated changes in pycnocline volume may ultimately control changes in future carbon uptake.