A ventilation-based framework to explain the regeneration-scavenging balance of iron in the ocean
A ventilation-based framework to explain the regeneration-scavenging balance of iron in the ocean
复制标题
基于通风的框架来解释海洋中铁的再生-清除平衡
DOI：
10.1002/2014gl061066
复制
发表时间：
2014
影响因子：
5.2
通讯作者：
Tagliabue A
中科院分区：
文献类型：
--
作者：
Tagliabue A
我们的理解的过程驱动模式的溶解铁（DFe）在海洋内部，无论是在观测或模型，是复杂的俯冲从表面混合层，显着的地下来源，再生和清除损失的综合影响。我们描述了一个基于通风的框架，以量化这些过程中的全球海洋生态地球化学模型，包括诊断沿着潜在的密度表面。有一个普遍的控制地下DFe的俯冲表面DFe的预制DFe增加的底栖来源的DFe从热液活动和沉积物。与磷酸盐不同，通常存在一级平衡，再生和清除之间几乎抵消，剩余的“净再生”由Fe结合配体中表面过量的通风控制。这个DFe框架提供了一个更严格的测试，如何在一个模型内的总DFe分布的机械控制，随后可以用来解释观察到的DFe分布。
Our understanding of the processes driving the patterns of dissolved iron (DFe) in the ocean interior, either in observations or models, is complicated by the combined influences of subduction from the surface mixed layer, notable subsurface sources, regeneration, and scavenging loss. We describe a ventilation‐based framework to quantify these processes in a global ocean biogeochemical model including diagnostics along potential density surfaces. There is a prevailing control of subsurface DFe by the subduction of surface DFe as preformed DFe augmented by benthic sources of DFe from hydrothermal activity and sediments. Unlike phosphate, there is often a first‐order balance with a near cancelation between regeneration and scavenging with the remaining “net regeneration” controlled by the ventilation of surface excesses in Fe‐binding ligands. This DFe framework provides a more stringent test of how the total DFe distribution is mechanistically controlled within a model and may be subsequently used to interpret observed DFe distributions.