globalchange  > 气候变化与战略
DOI: 10.1029/2019GB006300
论文题名:
Regional Characteristics of the Temporal Variability in the Global Particulate Inorganic Carbon Inventory
作者: Hopkins J.; Henson S.A.; Poulton A.J.; Balch W.M.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2019
卷: 33, 期:11
语种: 英语
英文关键词: air-sea interaction ; biogeochemistry ; biomass ; calcite ; carbon cycle ; carbon flux ; coccolith ; inorganic carbon ; inventory ; particulate inorganic matter ; phytoplankton ; temporal variation ; Southern Ocean ; Haptophyceae
学科: coccolithophores ; Great Calcite Belt ; integrated global inventory ; particulate inorganic carbon ; regional and seasonal variability of global PIC ; remote sensing
中文摘要: Coccolithophores are a biogeochemically important calcifying group of phytoplankton that exert significant influence on the global carbon cycle. They can modulate the air-sea flux of CO2 through the processes of photosynthesis and calcification and, as one of the primary contributors to the oceanic particulate inorganic carbon (PIC) pool, promote the export of organic carbon to depth. Here we present the first interannually resolved, global analysis of PIC standing stock. Average, global PIC standing stock in the top 100 m is estimated to be 27.04 ± 4.33 Tg PIC, with turnover times of ~7 days, which suggests PIC is likely removed by active processes such as grazing or rapid sinking, mediated through biogenic packaging (i.e., fecal pellets). We find that the Southern Hemisphere plays a significant role in the variability in PIC inventories and that interannual variability in PIC standing stock is driven primarily by variability in the midlatitude oceanic gyres and regions within the Great Calcite Belt of the Southern Ocean. Our results provide a framework against which future changes in global PIC standing stocks may be assessed. ©2019. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160097
Appears in Collections:气候变化与战略

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作者单位: Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States; Ordnance Survey, Southampton, United Kingdom; Ocean Biogeochemistry and Ecosystems, National Oceanography Centre Southampton, European Way, Southampton, United Kingdom; Now at the Lyell Centre for Earth and Marine Sciences and Technology, Heriot-Watt University, Edinburgh, United Kingdom

Recommended Citation:
Hopkins J.,Henson S.A.,Poulton A.J.,et al. Regional Characteristics of the Temporal Variability in the Global Particulate Inorganic Carbon Inventory[J]. Global Biogeochemical Cycles,2019-01-01,33(11)
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