DOI: 10.1002/2014GB005078
Scopus记录号: 2-s2.0-84957572352
论文题名: Tracing terrestrial DOC in the Baltic Sea - A 3-D model study
作者: Fransner F ; , Nycander J ; , Mörth C ; -M ; , Humborg C ; , Markus Meier H ; E ; , Hordoir R ; , Gustafsson E ; , Deutsch B
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2016
卷: 30, 期: 2 起始页码: 134
结束页码: 148
语种: 英语
英文关键词: Baltic Sea
; degradation
; DOC
; modeling
; organic matter
; river discharge
Scopus关键词: carbon monoxide
; carbon sink
; degradation
; dissolved organic carbon
; organic matter
; residence time
; river discharge
; three-dimensional modeling
; Atlantic Ocean
; Baltic Sea
; North Sea
英文摘要: The fate of terrestrial organic matter brought to the coastal seas by rivers and its role in the global carbon cycle are still not very well known. Here the degradation rate of terrestrial dissolved organic carbon (DOCter) is studied in the Baltic Sea, a subarctic semienclosed sea, by releasing it as a tracer in a 3-D circulation model and applying linear decay constants. A good agreement with available observational data is obtained by parameterizing the degradation in two rather different ways: one by applying a decay time on the order of 10 years to the whole pool of DOCter and one by dividing the DOCter into one refractory pool and one pool subject to a decay time on the order of 1 year. The choice of parameterization has a significant effect on where in the Baltic Sea the removal takes place, which can be of importance when modeling the full carbon cycle and the CO2 exchange with the atmosphere. In both cases the biogeochemical decay operates on time scales less than the water residence time. Therefore, only a minor fraction of the DOCter reaches the North Sea, whereas approximately 80% is removed by internal sinks within the Baltic Sea. This further implies that DOCter mineralization is an important link in land-sea-atmosphere cycling of carbon in coastal and shelf seas that are heavily influenced by riverine DOC. ©2015. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77875
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Meteorology, Stockholm University, Stockholm, Sweden; Baltic Nest Institute, Baltic Sea Centre, Stockholm University, Stockholm, Sweden; Department of Geological Sciences, Stockholm University, Stockholm, Sweden; Department of Applied Environmental Science, Stockholm University, Stockholm, Sweden; Swedish Meteorological and Hydrological Institute, Norrköping, Sweden
Recommended Citation:
Fransner F,, Nycander J,, Mörth C,et al. Tracing terrestrial DOC in the Baltic Sea - A 3-D model study[J]. Global Biogeochemical Cycles,2016-01-01,30(2)