Biological controls on marine volatile organic compound emissions: A balancing act at the sea-air interface
Biological controls on marine volatile organic compound emissions: A balancing act at the sea-air interface
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DOI：
10.1016/j.earscirev.2023.104360
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发表时间：
2023-02
影响因子：
12.1
通讯作者：
K. Halsey;S. Giovannoni;C. Davie-Martin
中科院分区：
文献类型：
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作者：
K. Halsey;S. Giovannoni;C. Davie-Martin
挥发性有机化合物（VOC）包括大量的低分子量和快速扩散的化学物质，它们从所有细胞以及溶解的有机物质的光解和化石燃料的燃烧中排放。在海洋中，挥发性有机化合物是海洋碳循环的重要组成部分，是浮游生物生长的产物和基质，也是影响浮游植物生命周期的信息化学物质。当VOCs从海洋排放到大气中时，它们通过氧化反应和二次气溶胶形成改变了地球的辐射收支。海洋浮游植物是海洋VOCs的主要生物来源，其中许多被无处不在的浮游细菌作为营养资源利用，浮游细菌已经进化出特定的机制来消耗这些化合物。因此，挥发性有机化合物的生产和消耗的平衡对海-气界面上溶解的挥发性有机化合物的浓度施加控制。目前对大气化学的模拟没有考虑到溶解的VOC的生物控制。浮游植物群落，挥发性有机化合物的组成和表面的海洋特性之间的联系是有前途的途径，为改善下一代的化学传输模型，量化和预测挥发性有机化合物的排放。我们认为，挥发性有机化合物的积累可能是可预测的，确定期间浮游生物群落被生物或物理过程破坏。分层模式，利用遥感和海洋物理学来测量浮游生物组合的状态和轨迹预测海洋海-气VOC转移的承诺。
Volatile organic compounds (VOCs) comprise a vast pool of low molecular weight and rapidly diffusible chemicals that are emitted from all cells as well as by photolysis of dissolved organic matter and burning of fossil fuels. In the ocean, VOCs are an important component of the marine carbon cycle, serving as plankton growth products and substrates and also as info-chemicals that influence phytoplankton life cycles. When VOCs are emitted from the ocean into the atmosphere, they alter Earth's radiative budget through oxidation reactions and secondary aerosol formation. Marine phytoplankton are the primary biotic source of marine VOCs, many of which are exploited as nutrient resources by ubiquitous bacterioplankton that have evolved specific mechanisms to consume these compounds. Thus, the balance of VOC production and consumption exerts control on the concentrations of dissolved VOCs at the sea-air interface. Current simulations of atmospheric chemistry do not take into account biological controls of dissolved VOCs. Linkages between phytoplankton communities, VOC composition, and surface ocean properties are promising avenues for improving the next generation of chemical transport models that quantify and predict VOC emissions. We suggest that VOC accumulation may be predictable by identifying periods when plankton communities are disrupted by biological or physical processes. Layered models that use remote sensing and ocean physics to measure the states and trajectories of plankton assemblages have promise for predicting ocean sea-air VOC transfer.