Re: La muerte del océano

Posted by JesusN on Feb 05, 2019; 3:10pm
URL: http://foro-crashoil.109.s1.nabble.com/La-muerte-del-oceano-tp47377p50219.html

No son necesarios esos niveles de pH para impedir la vida de los corales y otros seres con partes calcareas. Creo que hay cierto consenso en torno a eso:

Aquí puedes tomar una estimación

http://science.sciencemag.org/content/347/6223/1259855

"Ocean acidification
This boundary is intimately linked with one of the control variables, CO2, for the climate change PB. The concentration of free H+ ions in the surface ocean has increased by about 30% over the past 200 years due to the increase in atmospheric CO2 (45). This, in turn, influences carbonate chemistry in surface ocean waters. Specifically, it lowers the saturation state of aragonite (Ωarag), a form of calcium carbonate formed by many marine organisms. At Ωarag < 1, aragonite will dissolve. No new evidence has emerged to suggest that the originally proposed boundary (≥80% of the preindustrial average annual global Ωarag) should be adjusted, although geographical heterogeneity in Ωarag is important in monitoring the state of the boundary around the world’s oceans (fig. S4). Currently, Ωarag is approximately equal to 84% of the preindustrial value (46). This boundary would not be transgressed if the climate-change boundary of 350 ppm CO2 were to be respected."