New in this year’s report is concern about how increasing atmospheric carbon dioxide concentrations leads to increasing acidification of the ocean. Projections based on the emissions scenarios give reductions in average global surface ocean pH (the lower the pH, the more acidic) of between 0.14 and 0.35 units over the 21st century, adding to the present decrease of 0.1 units since pre-industrial times.
The New Zealand Herald, 27 February 2007. Article.
