Air-Sea Exchange of Volatile Organic Compounds: A New Model with Microlayer Effects
Air-Sea Exchange of Volatile Organic Compounds: A New Model with Microlayer Effects
复制标题
挥发性有机化合物的气海交换：具有微层效应的新模型
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Fu Tzung
中科院分区：
文献类型：
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作者：
Cen;Fu Tzung
摘要作者提出了一个新的海气有机气体交换的“三层”概念模式，它包括一个具有光化学和生物过程的动态表面微层。给出了该三层模式的参数化方案，并利用该方案计算了太平洋丙酮的海气通量。三层模式计算的丙酮海气通量方向相同，但在不考虑光化学和生物过程的情况下，其通量只有传统两层模式的一半。然而，光化学和生物过程影响丙酮的微层可以大大改变三层模型中的计算通量，甚至在有利的条件下扭转其方向。我们的模型可能有助于解释在以前的研究中测量和计算丙酮通量之间的差异。需要更多的测量来验证我们的概念模型，并提供对模型参数的约束。
Abstract The authors propose a new “three-layer” conceptual model for the air-sea exchange of organic gases, which includes a dynamic surface microlayer with photochemical and biological processes. A parameterization of this three-layer model is presented, which was used to calculate the air-sea fluxes of acetone over the Pacific Ocean. The air-sea fluxes of acetone calculated by the three-layer model are in the same direction but possess half the magnitude of the fluxes calculated by the traditional two-layer model in the absence of photochemical and biological processes. However, photochemical and biological processes impacting acetone in the microlayer can greatly vary the calculated fluxes in the three-layer model, even reversing their direction under favorable conditions. Our model may help explain the discrepancies between measured and calculated acetone fluxes in previous studies. More measurements are needed to validate our conceptual model and provide constraints on the model parameters.