Spatial and temporal variability of biogenic gases during the Southern Ocean spring bloom
Spatial and temporal variability of biogenic gases during the Southern Ocean spring bloom
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DOI：
10.1029/2008gl035819
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发表时间：
2009-01
影响因子：
5.2
通讯作者：
P. Tortell;M. Long
中科院分区：
文献类型：
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作者：
P. Tortell;M. Long
南大洋对全球海洋地球化学循环和海气通量有很大影响。在了解该地区环流和生物生产力的一般模式方面取得了重大进展，但地表水气体的小尺度动力学仍然没有得到很好的解决。在这里，我们提出了新的数据记录前所未有的空间和时间变化的南大洋生物气体在春季浮游植物水华。使用真实的实时进行中质谱，我们观察到地表水O2/Ar，pCO 2和二甲硫醚（DMS）浓度随时间尺度（从几天到几周）和亚公里空间尺度的显著变化。我们的研究结果表明，控制南大洋气体分布的物理和生物过程之间存在紧密耦合，并突出了控制开放水域和冰盖区域气体循环的独特地球化学动力学。
The Southern Ocean exerts a strong influence on global biogeochemical cycles and air‐sea gas fluxes. Significant progress has been made towards understanding the general patterns of circulation and biological productivity in this region, but the small‐scale dynamics of surface water gases remain poorly resolved. Here we present new data documenting unprecedented spatial and temporal variability of Southern Ocean biogenic gases during the spring phytoplankton bloom. Using real‐time underway mass spectrometry, we observed significant changes in surface water O2/Ar, pCO2, and dimethylsulfide (DMS) concentrations over time scales of days to weeks and sub‐km spatial scales. Our results demonstrate a tight coupling between physical and biological processes controlling Southern Ocean gas distributions, and highlight the distinct biogeochemical dynamics governing gas cycling in open water and ice‐covered regions.