Preformed Properties for Marine Organic Matter and Carbonate Mineral Cycling Quantification
Preformed Properties for Marine Organic Matter and Carbonate Mineral Cycling Quantification
复制标题
海洋有机物和碳酸盐矿物循环定量的预制特性
DOI：
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发表时间：
2020
影响因子：
5.2
通讯作者：
R. Sonnerup
中科院分区：
文献类型：
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作者：
B. Carter;R. Feely;S. Lauvset;A. Olsen;T. DeVries;R. Sonnerup
我们估计预制的海洋磷酸盐，硝酸盐，氧，硅酸盐和碱度相结合的重建通风途径在海洋内部的亚混合层属性的估计。这些新的预制属性估计旨在帮助地球化学循环研究和验证建模预制属性分布，并可在线获得。对净性质积累的分析（观察到的减去预先形成的性质）表明，海洋内部的净矿化率为[1 P]：[14.1 ± 0.6 N]：[−141 ± 12 O2]：[95 ± 25 Si]：[89 ± 9 TA]。这些比值意味着，海洋内部通过有机质矿化储存了1,300（±230）PgC，通过碳酸盐矿物溶解储存了540（±60）PgC，表观氧利用率可能高估海洋内部氧消耗量约25%。此外，只有4（±1%）和46%（±5%）的总碱度从碳酸盐矿物溶解积累的海水中发现，是相对于碳酸钙的文石和方解石矿物形式过饱和，分别。这些小的过量碱度库存是由于体积较小的过饱和水体和较短的通风时间尺度，碳酸盐矿物溶解速率似乎几乎独立的深度和饱和状态。
We estimate preformed ocean phosphate, nitrate, oxygen, silicate, and alkalinity by combining a reconstruction of ventilation pathways in the ocean interior with estimates of submixed layer properties. These new preformed property estimates are intended to aid biogeochemical cycling studies and validation of modeled preformed property distributions and are available online. Analyses of net property accumulations (observed minus preformed properties) indicate net remineralization ratios in the ocean interior of [1 P]: [14.1 ± 0.6 N]: [−141 ± 12 O2]: [95 ± 25 Si]: [89 ± 9 TA]. These ratios imply that the interior ocean stores 1,300 (±230) PgC through organic matter remineralization and 540 (±60) PgC through carbonate mineral dissolution and that apparent oxygen utilization can overestimate the interior ocean oxygen consumption by ~25%. Further, only 4 (±1%) and 46 (±5%) of the total alkalinity accumulated from carbonate mineral dissolution are found in seawater that is supersaturated with respect to the aragonite and calcite mineral forms of calcium carbonate, respectively. These small excess alkalinity inventories are due to smaller volumes of the supersaturated water masses and shorter ventilation timescales, as carbonate mineral dissolution rates appear nearly independent of depth and saturation state.
影响因子：
64.8
作者：
Wang, Wei-Lei;Moore, J. Keith;Primeau, Francois W.
通讯作者：
Primeau, Francois W.
影响因子：
5.2
作者：
Henson, Stephanie A.;Sanders, Richard;Madsen, Esben
通讯作者：
Madsen, Esben