Fluxes and distribution of dissolved iron in the eastern (sub-) tropical North Atlantic Ocean
Fluxes and distribution of dissolved iron in the eastern (sub-) tropical North Atlantic Ocean
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DOI：
10.1029/2011gb004264
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发表时间：
2012-07-21
影响因子：
5.2
通讯作者：
Achterberg, Eric P.
中科院分区：
文献类型：
--
作者：
Rijkenberg, Micha J. A.;Steigenberger, Sebastian;Achterberg, Eric P.
从撒哈拉/萨赫勒沙漠地区的风尘运输被认为是占主导地位的外部输入的铁（Fe）的表面沃茨的东部（亚）热带北大西洋。为了验证这一假设，我们调查了溶解铁（DFe）的来源和量化的DFe通量在这一地区的表层海洋。在2008年冬季，地表水DFe浓度在1.5 nM之间变化）与表观氧利用率（AOU）呈正相关，并显示有机质矿化作为DFe来源的重要性。因此，垂直扩散混合形成了一个重要的铁通量的表面海洋在这一地区，甚至超过了一个主要的沙尘暴事件。
Aeolian dust transport from the Saharan/Sahel desert regions is considered the dominant external input of iron (Fe) to the surface waters of the eastern (sub-) tropical North Atlantic Ocean. To test this hypothesis, we investigated the sources of dissolved Fe (DFe) and quantified DFe fluxes to the surface ocean in this region. In winter 2008, surface water DFe concentrations varied between 1.5 nM) correlated positively with apparent oxygen utilization (AOU) and showed the importance of organic matter remineralization as an DFe source. As a consequence, vertical diffusive mixing formed an important Fe flux to the surface ocean in this region, even surpassing that of a major dust event.