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Journal Article
Review
Quantifying the Ocean's Biological Pump and Its Carbon Cycle Impacts on Global Scales.
Annual Review of Marine Science 2022 September 8
The biological pump transports organic matter, created by phytoplankton productivity in the well-lit surface ocean, to the ocean's dark interior, where it is consumed by animals and heterotrophic microbes and remineralized back to inorganic forms. This downward transport of organic matter sequesters carbon dioxide from exchange with the atmosphere on timescales of months to millennia, depending on where in the water column the respiration occurs. There are three primary export pathways that link the upper ocean to the interior: the gravitational, migrant, and mixing pumps. These pathways are regulated by vastly different mechanisms, making it challenging to quantify the impacts of the biological pump on the global carbon cycle. In this review, we assess progress toward creating a global accounting of carbon export and sequestration via the biological pump and suggest a potential path toward achieving this goal. Expected final online publication date for the Annual Review of Marine Science , Volume 15 is January 2023. Please see https://www.annualreviews.org/page/journal/pubdates for revised estimates.
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