Marine Carbon Removal

Marine carbon removal is the ocean-based branch of Carbon Removal introduced in An "antacid" to fight climate change. The episode uses Ocean Alkalinity Enhancement and Olivine Carbon Removal to show how a removal claim can depend on ocean chemistry, bicarbonate formation, sampling, and ecological monitoring.

The concept extends the wiki’s carbon-removal branch beyond Direct Air Capture and Bio-Oil Carbon Removal. In this source, the ocean is not just a sink; it is an active intervention site whose climate value must be weighed against Ocean Acidification, marine-life impacts, lifecycle emissions, and the difficulty of proving distributed carbon storage.

Key Claims

• Marine carbon removal can target dissolved ocean chemistry rather than capture CO2 directly from air or exhaust.
• The ocean’s existing role as a CO2 sink makes the category plausible but also ecologically sensitive.
• Verification is difficult because claimed storage may be spread through seawater chemistry rather than contained in a tank, rock layer, or injection site.
• Coastal restoration could become a deployment context, but the source treats that as conditional on evidence of minimal marine impact.

Connections

• Ocean Alkalinity Enhancement, Olivine Carbon Removal, and Vesta - source pathway and project case.
• Carbon Removal, Carbon Storage Permanence, and Carbon Removal Cost Curve - broader removal accounting and economics frame.
• Ocean Acidification and Climate Adaptation - ocean-climate risk context.
• How We Survive, Marketplace Tech, and Amy Scott - reporting context.