By JR on Monday, November 14, 2011
There all sorts of holes in the acidification scare but Jo Nova wanted to hit the thing well and truly on the head. So she got a distinguished chemist to spell out some of the problems with the scare in great detail. The techically-minded will want to read the whole paper but for others I reproduce her summary of it below
First a comment of my own on the ironies involved, however: If the earth really WERE warming that would reduce the acidity "problem", because warmer water would outgas CO2. It is only the present situation where CO2 levels are increasing WITHOUT any temperature rise that could theoretically cause a problem. So whichever way you jump, the Warmist argument loses: Either the earth is not warming or there is no acidity problem -- JR
The ocean acidification threat is a big can of worms. I asked Professor Brice Bosnich to help create a quick reference page on the chemistry and was pleased he could find the time to help. Here’s everything you wanted to know about the basics…
He explains what pH means, and points out that:
Ocean pH varies by 0.3 naturally.
Claims of acidification since 1750 are based on dubious models and few observations.
There are reasons to assume that marine life will not be overly affected by an increase in ocean acidity due to atmospheric carbon dioxide:
Ocean life evolved and survived far higher levels of CO2 for millions of years in the past.
Marine organisms actively create carbonate shells (using energy) which means crustacea, corals and molluscs aren’t automatically prey to pH changes in the same way that say a limestone rock would be.
The world’s oceans may have warmed a mere 0.17C since 1955, hardly a significant threat to marine life.
We also find out that acidic water is added to the ocean from rainfall and floods (and he explains why raindrops will always be acidic).