Document of bibliographic reference 318040

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory

Abstract

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.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000505301300001

Bibliographic citation

Hopkins, J.; Henson, S.A.; Poulton, A.J.; Balch, W.M. (2019). Regional characteristics of the temporal variability in the global particulate inorganic carbon inventory. Global Biogeochem. Cycles 33(11): 1328-1338. https://dx.doi.org/10.1029/2019gb006300

Topic

Marine

Is peer reviewed

true