Prof. Tatiana Ilyina

There is a striking difference between land- and ocean-based #CDR.

Ocean CDR ideas like adding #alkalinity or artificial upwelling imply unprecedented intervention into ocean commons, with unknown impacts on ecosystems. #Monitoring, not to mention regulating, would be practicably challenging, because ocean waters move.

Land carbon cycle is already managed by agriculture, urbanization etc. Land CDR would be a mean of already ongoing carbon rebalancing.

#climatechange #climateaction

Jul 22, 2023 at 11:03amWeb
Show threadJim SmootJul 22, 2023
@TatianaIlyina is it really that unprecedented though? OA, overfishing, and overall “solution to pollution is dilution” attitude have greatly impacted the ocean. The key is to pursue CDR approaches that simultaneously mitigate these impacts. For example, benthic restoration coupled with enhanced weathering and transforming effluent CO2 to bicarbonate prior to discharge.
Show threadProf. Tatiana IlyinaJul 22, 2023
@jim_smoot you would consider building infrastructure for a large scale ocean-based CDR, e.g. to increase alkalinity or upwelling as not unprecedented?
Show threadJim SmootJul 22, 2023
@TatianaIlyina I’d say the intentional action is unprecedented, but the scale of the impact isn’t.