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The Forum > Article Comments > Turnbull's error > Comments

Turnbull's error : Comments

By Peter Bowden, published 13/7/2016

Out of the 12 seats lost by the Government so far, eight were held by far right politicians who fought against key issues like climate change and funding for our schools and hospitals.

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Aidan,

Oceanic pH is clearly alkaline and despite the claims by some that carbon dioxide is making them acidic, this is simply another unsubstantiated scare tactic. The buffering capacity of the oceans is almost infinite and while pH will vary in the short term, the oceans will never become acidic.

Historically carbon dioxide levels have been many times higher than todays comparatively low levels and the oceans have remained alkaline.

The oceans continue to absorb carbon dioxide where the water is cold and release it where it is warmer. As they warm up the relative sizes of these areas changes and they clearly at some point become net emitters. This is clearly verified by the historical record, when man was not an influence.

The overriding question however remains, there is not one shred of empirical evidence to substantiate the underlying claims that the small portion of the trace greenhouse gas, carbon dioxide, contributed by man has become the predominate driving force behind the current cyclical warming of global temperatures. None.
Posted by Ian McClintock, Sunday, 17 July 2016 8:17:55 AM
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Ian McClintock,,

"Oceanic pH is clearly alkaline"
Duh!

"and despite the claims by some that carbon dioxide is making them acidic, this is simply another unsubstantiated scare tactic."
No, it's a strawman.
The fossil fuel lobby are spreading the lie that "ocean acidification" means the oceans are turning to acid.

Whereas what scientists mean by "ocean acidification" is that their pH is declining due to an increased amount of dissolved CO2.

Ocean acidification is a serious problem but, as I said, the fact that the oceans are less acidic than pure water is irrelevant. The problem is its pH is, in some areas, too low for some marine creatures to thrive (mainly those with aragonite shells).

"The buffering capacity of the oceans is almost infinite and while pH will vary in the short term, the oceans will never become acidic."
Considering your very limited grasp of the concept of acidity, I'm actually quite surprised you've even heard of Henry's law.

I could explain all this in detail, but others already have – see http://www.skepticalscience.com/Mackie_OA_not_OK_post_1.html
(and the pages that follow it, particularly pages 9 and 10 which have a more detailed explanation of how we're sure that ocean warming isn't the source of the CO2. Pay particular attention to the bit that the sea would have to warm about 10ºC to release that much CO2 according to Henry's law).

No matter how much you deny the existence of empirical evidence, it's overwhelming.
Posted by Aidan, Monday, 18 July 2016 2:57:39 AM
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