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Marine micro-algae bind carbon dioxide, CO2. During their decay, snowflake-like aggregates form that sink, remineralize and transport organically bound CO2 to depth; this is referred to as the biological carbon pump. In our model study, we elucidate how variable aggregate composition impacts the global pattern of vertical carbon fluxes. Our mechanistic model approach advances the representation of the global biological carbon pump and promotes a more realistic projection under climate change.
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BG | Articles | Volume 17, issue 7
Biogeosciences, 17, 1765–1803, 2020
https://doi.org/10.5194/bg-17-1765-2020
Biogeosciences, 17, 1765–1803, 2020
https://doi.org/10.5194/bg-17-1765-2020

Research article 03 Apr 2020

Research article | 03 Apr 2020

Microstructure and composition of marine aggregates as co-determinants for vertical particulate organic carbon transfer in the global ocean

Joeran Maerz et al.

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Cited articles

Adler, P. M.: A study of disaggregation effects in sedimentation, AlChE Journal, 25, 487–493, 1979. a, b
Alldredge, A.: The carbon, nitrogen and mass content of marine snow as a function of aggregate size, Deep-Sea Res. Pt. I, 45, 529–541, 1998. a
Alldredge, A. L. and Gotschalk, C.: In situ settling behaviour of marine snow, Limnol. Oceanogr., 33, 339–351, 1988. a, b, c, d, e, f, g, h, i
Alldredge, A. L. and Gotschalk, C. C.: The relative contribution of marine snow of different origins to biological processes in coastal waters, Cont. Shelf Res., 10, 41–58, 1990. a, b
Alldredge, A. L. and McGillivary, P.: The attachment probabilities of marine snow and their implications for particle coagulation in the ocean, Deep-Sea Res., 38, 431–443, 1991. a, b
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Short summary
Marine micro-algae bind carbon dioxide, CO2. During their decay, snowflake-like aggregates form that sink, remineralize and transport organically bound CO2 to depth; this is referred to as the biological carbon pump. In our model study, we elucidate how variable aggregate composition impacts the global pattern of vertical carbon fluxes. Our mechanistic model approach advances the representation of the global biological carbon pump and promotes a more realistic projection under climate change.
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Final-revised paper
Preprint