{"id":4522,"date":"2025-05-21T09:49:13","date_gmt":"2025-05-21T07:49:13","guid":{"rendered":"https:\/\/cdrterra.de\/?p=4522"},"modified":"2025-06-05T11:42:48","modified_gmt":"2025-06-05T09:42:48","slug":"no-efficiency-loss-when-combining-land-and-ocean-cdr-study-shows","status":"publish","type":"post","link":"https:\/\/cdrterra.de\/en\/news\/no-efficiency-loss-when-combining-land-and-ocean-cdr-study-shows\/","title":{"rendered":"No efficiency loss when combining land and ocean CDR, study shows"},"content":{"rendered":"
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\u00a9 Patrick Robert Doyle, Unsplash<\/p>\n\t\t\t\t \t\t\t<\/div>\n\t\t\t\t \t\t<\/div>\n\n\t\t\t\t \t\n\t\t\t\t<\/div>\n\n\t\t\t\t\n\t\t\t<\/figure>\n\n\t\t\n\t<\/div>\n\n<\/div>\n\n

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What the study shows<\/b><\/h3>\n

To reach the goals of the Paris Agreement, large-scale CDR application will be needed, which can involve both terrestrial and marine methods. However, it has remained unclear how Earth system feedbacks respond when these methods are scaled up or combined. This study closes an important research gap by using two Earth System Models to simulate different CDR scenarios including both marine and ocean CDR over the 21st century.<\/span><\/p>\n

Specifically, the team performed 42 simulations under a high-emissions pathway, deploying and scaling up Afforestation\/Reforestation (AR) and Ocean Alkalinity Enhancement (OAE) both independently and in combination. The results show that global carbon fluxes scale linearly with increased and combined CDR \u2013 meaning that the efficiency of CDR is not compromised by combining land- and ocean-based approaches.<\/span><\/p>\n

\u201cOur results are very encouraging,\u201d says lead author Yiannis Moustakis. \u201cThey suggest that we can design more diverse CDR portfolios including both marine and terrestrial methods without losing effectiveness, despite the emerging Earth system feedbacks. This could help reduce pressure on land systems, which can have severe socioeconomic consequences. To support this process, we urgently need more research also into marine CDR to understand its mitigation potential and environmental impacts. And we must be clear: CDR is no substitute for steep emissions reductions \u2013 it’s a necessary complement.\u201d<\/span><\/p>\n

Why this matters<\/b><\/h3>\n

The findings have major implications for climate policy and CDR strategy design:<\/span><\/p>\n