Future Model Projections of Ocean Acidification Markers


The relative amount of carbon species and hydrogen ions present in the water column is displayed here. The most abundant compound is the bicarbonate ion, while hydrogen ions react quickly with other compounds, being the proportion left rather small.


In the future the dramatic increase in atmospheric carbon dioxide leads to a slight increase in bicarbonate ions, a decrease of carbonate ions and ultimately to an excess of hydrogen ions triggering the ocean acidification effect.

The relative abundance of carbon species in the water column has been taken from "Introduction to CO2 chemistry in Sea Water", by Andrew G. Dickson at Scripps. Beware that the hydrogen concentration has been magnified in the dataviz due to its much lower concentration by some orders of magnitude compared to the carbon species.

Changes in carbon species are calculated from the mean of several earth system models as an average of the 2080-2100 time period, including the following models: CNRM-ESM1, GFDL-ESM2G, GFDL-ESM2M, HadGEM2-ES, IPSL-CM5A-LR, IPSL-CM5A-MR, MPI-ESM-LR, MPI-ESM-MR and CESM1-BGC future scenario.

The brownian motion of particles done in D3.js to mimick the carbonate chemistry has used the development by @mike_skaug on the topic.