Tag: CO2

Ocean Acidifi-WHAT?!

By Sheril Kirshenbaum | September 8, 2010 10:37 am

As I continue to speak around the country, I frequently ask if those in the audience who have heard of ocean acidification will kindly raise their hands. Sometimes a few do. More often I get blank stares. I’ve been writing about this subject for as long as I’ve been blogging. Longer if you count Senate memos and grad school projects over much of the past decade. Acidification is a huge deal. It’s as serious as climate change, which–despite Mr. Morano’s sorry efforts at special interest propaganda–is indeed a very real threat to biodiversity. Humans included.

So time for another post on what ocean acidification is, how it affects our world, and why this matters. It needs to become prominent on the national radar and a priority in policy discussions. I intend to keep blogging about it until more hands go up in the room. With that, another edition of:

Ocean Acidification 101

Most of us are aware that we’ve been adding lots of CO2 to the atmosphere from the combustion of fossil fuels, land-use changes, and more. But carbon dioxide is also absorbed in oceans and taken up by terrestrial plants. Initially, the marine realm served to mitigate climate change, but over time, excess accumulated CO2 has disrupted a long-established system of environmental checks and balances.

You see, in oceans, all of that dissolved carbon dioxide interacts with carbonic acid, bicarbonate, and carbonate. This leads to a decrease in overall pH making the them less basic. Readers who maintain aquariums likely know that monitoring pH is important for the well-being of the critters inside. The same goes for oceans. Read More


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