Oceans of Acid

21 11 2009

Here’s  a nice article from Australia’s Cosmos magazine.  It’s nominated for an Earth journalism award.  You can vote for it here.

Oceans of acid

Pickrell, John
Cosmos Magazine (2009-02-06)
Read the original report (online, press)

 

As global warming wreaks havoc on coral reefs, evidence is mounting that another problem caused by carbon dioxide is an even bigger threat. But is it too late to fix?

It’s six o’clock on a Sunday morning and I’m sitting on Queensland’s Four Mile Beach. There’s still a night chill to the air. Though the light is dim, a red glow is building on the horizon as the Sun is about to emerge from beyond the Pacific Ocean.

I’m playing with the sand between my toes and fiddling with a small piece of coral rubbed smooth by the tide.

I’ve spent the preceding few days out on an Australian government marine survey vessel snaking its way along the Great Barrier Reef. The trip has given me a lot to think about, both good and bad, and this morning I’m mulling over everything I’ve experienced.

In late July, the CSIRO invited me to join a team of 14 scientists, led by oceanographer Bronte Tilbrook and climate modeller Richard Matear, as they collected data to predict the future health of the reef.

The issue on their agenda is ocean acidification, commonly referred to by those in the know as “the other CO2 problem” – separate, but linked to climate change. Though acidification has had a lot less press, there is mounting evidence to suggest that it will be a bigger problem for marine life than the warming of the oceans themselves.

Our waste carbon dioxide (CO2) is mostly maligned for causing climate change as it builds up in the atmosphere, trapping heat, but for the past 200 years it’s also been quietly dissolving into the oceans, slowly making them more acidic.

Continued here.