Future Model Projections of Ocean Acidification Markers


Aerosol emissions in coastal areas contribute to ocean acification in estuaries and all along the coastal area. Sulphate and nitrogen derived aerosols' deposition decrease the pH in surface waters, allowing chemical reactions that change the surface water chemistry.

Compounds in the form of HNO3, H2SO4 and NH3 contribute to the increase of hydrogen ions and in turn to reduce the pH. It has been estimated a load of 0.8 Tmol/yr of reactive sulphur and 2.7 Tmol/yr of nitrogen deposition on coastal areas.


Freshwater contributes with large quantities of carbon dioxide in coastal areas in the form of organic and inorganic matter. Organic matter is remineralized by organisms in coastal areas, releasing CO2 and enhancing the ocean acidification effect.

Estimates of the aerosol deposition of sulphates and nitrogen are from : "Impact of anthropogenic atmospheric nitrogen and sulfur deposition on ocean acidification and the inorganic carbon system" by Doney et al., 2007.

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