Metrics that matter for assessing the ocean biological carbon pump

Global Warming is a hoax! Climate models are garbage! Climate alarmism is based on junk science!

"... This approach revealed that the sunlit zone extends farther down in some regions of the ocean than in others. Taking this new information into account, we estimate that the biological pump carries twice as much heat-trapping carbon down from the surface ocean than previously thought. ..."

"The biological carbon pump (BCP) comprises wide-ranging processes that set carbon supply, consumption, and storage in the oceans’ interior. It is becoming increasingly evident that small changes in the efficiency of the BCP can significantly alter ocean carbon sequestration and, thus, atmospheric CO2 and climate, as well as the functioning of midwater ecosystems. ... 

Earth system models, including those used by the United Nation’s Intergovernmental Panel on Climate Change, most often assess POC (particulate organic carbon) flux into the ocean interior at a fixed reference depth. The extrapolation of these fluxes to other depths, which defines the BCP efficiencies, is often executed using an idealized and empirically based flux-vs.-depth relationship, often referred to as the “Martin curve.” ...

We use a new compilation of POC fluxes in the upper ocean to reveal very different patterns in BCP efficiencies depending upon whether the fluxes are assessed at a fixed reference depth or relative to the depth of the sunlit euphotic zone (Ez). "



Metrics that matter for assessing the ocean biological carbon pump | PNAS



Here is a linkt to an interpretation of the PNAS article above:

Tiny plankton drive processes in the ocean that capture twice as much carbon as scientists thought