Articles | Volume 18, issue 1
Biogeosciences, 18, 229–250, 2021
https://doi.org/10.5194/bg-18-229-2021
Biogeosciences, 18, 229–250, 2021
https://doi.org/10.5194/bg-18-229-2021

Research article 14 Jan 2021

Research article | 14 Jan 2021

Variable particle size distributions reduce the sensitivity of global export flux to climate change

Shirley W. Leung et al.

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A global model is constrained with empirical relationships to quantify how shifts in sinking-particle sizes modulate particulate organic carbon export production changes in a warming ocean. Including the effect of dynamic particle sizes on remineralization reduces the magnitude of predicted 100-year changes in export production by ~14 %. Projections of future export could thus be improved by considering dynamic phytoplankton and particle-size-dependent remineralization depths.
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