Out-gassing of CO2 from Siberian Shelf seas by terrestrial organic matter decomposition
Out-gassing of CO2 from Siberian Shelf seas by terrestrial organic matter decomposition
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DOI：
10.1029/2009gl040046
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发表时间：
2009-10-16
影响因子：
5.2
通讯作者：
Semiletov, I. P.
中科院分区：
文献类型：
--
作者：
Anderson, L. G.;Jutterstrom, S.;Semiletov, I. P.
西伯利亚大陆架海覆盖了大量的浅水区，接受大量的河流排放。河流径流提供营养物质，促进海洋初级生产，但也溶解和颗粒有机物。沿海地区是由永久冻土中的有机物组成的，永久冻土融化后导致海岸侵蚀，并向海洋中添加有机物。因此，有机物有多种来源，通过微生物分解，导致陆架海中二氧化碳分压很高。通过评估2008年夏季从拉普捷夫海和东西伯利亚海收集的数据，我们计算出DIC的过量等于10.10（12）g C，预计将被释放到大气中，并建议这种过量主要是由陆地有机物分解引起的。引文：安德森，L。G.，S. Jutterstrom，S.雅尔马松岛瓦尔斯特伦和我。P. Semiletov（2009年），《通过陆地有机物分解从西伯利亚陆架海排出二氧化碳》，地球物理学。保留信函：36，L20601，doi：10.1029/2009GL040046。
The Siberian shelf seas cover large shallow areas that receive substantial amounts of river discharge. The river runoff contributes nutrients that promote marine primary production, but also dissolved and particulate organic matter. The coastal regions are built up of organic matter in permafrost that thaws and result in coastal erosion and addition of organic matter to the sea. Hence there are multiple sources of organic matter that through microbial decomposition result in high partial pressures of CO2 in the shelf seas. By evaluating data collected from the Laptev and East Siberian Seas in the summer of 2008 we compute an excess of DIC equal to 10.10(12) g C that is expected to be outgassed to the atmosphere and suggest that this excess mainly is caused by terrestrial organic matter decomposition. Citation: Anderson, L. G., S. Jutterstrom, S. Hjalmarsson, I. Wahlstrom, and I. P. Semiletov (2009), Out-gassing of CO2 from Siberian Shelf seas by terrestrial organic matter decomposition, Geophys. Res. Lett., 36, L20601, doi:10.1029/2009GL040046.