The biological pump is the ocean's biologically driven sequestration of carbon from the atmosphere and land runoff to the ocean interior and seafloor sediments. In other words, it is a biologically me
The pelagic food web, showing the central involvement of marine microorganisms in how the ocean imports carbon and then exports it back to the atmosphere and ocean floor
Pump processes vary with depthPhotic zone: 0–100 m; Mesopelagic: 100–1000 m; Bathypelagic: 1000 to abyssal depths. Below 1000 m depth carbon is considered removed from the atmosphere for at least 100 years. Scavenging: DOC incorporation within sinking particles.
Particulate inorganic carbon budget for Hudson Bay Black arrows represent DIC produced by PIC dissolution. Grey lines represent terrestrial PIC. Units are Tg C y−1
The coccolithophore Emiliania huxleyi (µm = thousandth of one mm)
The oceanic carbon cycle is composed of processes that exchange carbon between various pools within the ocean as well as between the atmosphere, Earth interior, and the seafloor. The carbon cycle is a
Biological pump
…pump is the biological component of the "marine carbon pump" which contains both a physical and biological component. It is the part of the broader oceanic carbon cycle responsible for the cycling of organic matter formed mainly by phytoplankton during photosynthesis (soft-tissue pump), as well as the cycling of calcium…
Oceanic carbon cycle (IPCC)
Dissociation of carbon dioxide following Henry's Law
Global air-sea CO2 flux – IPCC 2007
Carbon cycle processes in high-latitude shelf seas