Marine CO₂ removal technologies could depend on the appetite of the ocean’s tiniest animals

Wed, 10 Jul 2024 19:23:30 +1000

Andrew Pam <xanni [at] glasswings.com.au>

Andrew Pam
<https://theconversation.com/marine-co-removal-technologies-could-depend-on-the-appetite-of-the-oceans-tiniest-animals-227156>

"As the world struggles to decarbonise, it’s becoming increasingly clear we’ll
need to both rapidly reduce emissions and actively remove carbon dioxide (CO₂)
from the atmosphere. The latest Intergovernmental Panel on Climate Change
report considered 230 pathways to keep global warming below 1.5°C. All required
CO₂ removal.

Some of the most promising CO₂ removal technologies receiving government
funding in the United States, United Kingdom and Australia seek to increase the
massive carbon storage potential of the ocean. These include fertilising tiny
plants and tweaking ocean chemistry.

Ocean-based approaches are gaining popularity because they could potentially
store carbon for a tenth of the cost of “direct air capture”, where CO₂ is
sucked from the air with energy-intensive machinery.

But the marine carbon cycle is much harder to predict. Scientists must unravel
the many complex natural processes that could alter the efficiency, efficacy
and safety of ocean-based CO₂ removal before it can go ahead.

In our new research, we highlight a surprisingly important mechanism that had
previously been overlooked. If CO₂ removal techniques change the appetite of
tiny animals at the base of the food chain, that could dramatically change how
much carbon is actually stored."

Cheers,
       *** Xanni ***
--
mailto:xanni@xanadu.net               Andrew Pam
http://xanadu.com.au/                 Chief Scientist, Xanadu
https://glasswings.com.au/            Partner, Glass Wings
https://sericyb.com.au/               Manager, Serious Cybernetics

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