DOI: 10.1002/2014GB004833
Scopus记录号: 2-s2.0-84910112133
论文题名: Late summer net community production in the central Arctic Ocean using multiple approaches
作者: Ulfsbo A ; , Cassar N ; , Korhonen M ; , Van Heuven S ; , Hoppema M ; , Kattner G ; , Anderson L ; G
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2014
卷: 28, 期: 10 起始页码: 1129
结束页码: 1148
语种: 英语
英文关键词: Arctic Ocean
; ARK-XXVI/3
; NCP
; net community production
; TransArc
Scopus关键词: carbon dioxide
; dissolved inorganic carbon
; ice cover
; marginal basin
; net ecosystem production
; nutrient availability
; sea ice
; summer
; Amundsen Basin
; Arctic Ocean
; Eurasian Basin
; Makarov Basin
; Mendeleyev Ridge
; Nansen Basin
英文摘要: Large-scale patterns of net community production (NCP) were estimated during the late summer cruise ARK-XXVI/3 (TransArc, August/September 2011) to the central Arctic Ocean. Several approaches were used based on the following: (i) continuous measurements of surface water oxygen to argon ratios (O2/Ar), (ii) underway measurements of surface partial pressure of carbon dioxide (pCO2), (iii) discrete samples of dissolved inorganic carbon, and (iv) dissolved inorganic nitrogen and phosphate. The NCP estimates agreed well within the uncertainties associated with each approach. The highest late summer NCP (up to 6 mol C m-2) was observed in the marginal sea ice zone region. Low values (<1 mol C m-2) were found in the sea ice-covered deep basins with a strong spatial variability. Lowest values were found in the Amundsen Basin and moderate values in the Nansen and Makarov Basins with slightly higher estimates over the Mendeleev Ridge. Our findings support a coupling of NCP to sea ice coverage and nutrient supply and thus stress a potential change in spatial and temporal distribution of NCP in a future Arctic Ocean. To follow the evolution of NCP in space and time, it is suggested to apply one or several of these approaches in shipboard investigations with a time interval of 3 to 5 years. Key Points Late summer NCP in the central Arctic Ocean by multiple approachesHigh NCP in the marginal sea ice zone and low NCP in the central basinsBasin-specific variability coupled to sea ice cover and nutrient supply © 2014. 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/77530
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden; Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC, United States; Finnish Meteorological Institute, Helsinki, Finland; Department of Physics, University of Helsinki, Helsinki, Finland; Centre for Isotope Research, University of Groningen, Groningen, Netherlands; Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
Recommended Citation:
Ulfsbo A,, Cassar N,, Korhonen M,et al. Late summer net community production in the central Arctic Ocean using multiple approaches[J]. Global Biogeochemical Cycles,2014-01-01,28(10)