Géo-ingénierie de l’océan: nouvelle frontière des débats scientifiques, politiques et éthiques dans la lutte contre le changement climatique

Blog le Monde océan pour le climatFace à l’ampleur des changements globaux, la géo-ingénierie explore des solutions technologiques pour contrer les effets de la crise climatique. Alors qu’elle n’intéressait qu’une poignée de scientifiques il y a quelques années encore, elle reçoit aujourd’hui une attention notable au sein des communautés scientifiques et politiques. À l’image du Groupe d’expert Intergouvernemental sur l’Evolution du Climat (GIEC), dont certains des scénarios, présentant un faible accroissement des émissions de gaz à effet de serre et des températures reposent largement sur des technologies de géo-ingénierie d’élimination du carbone de l’atmosphère (1). Pour autant, le recours à ces techniques est encore loin de faire l’unanimité au sein de la communauté scientifique. Les options technologiques proposées suscitent en effet de nombreux questionnements quant à leur efficacité et aux risques environnementaux associés, en plus de nombreux débats éthiques et politiques autour des cadres et limites à définir

An evolution towards scientific consensus for a sustainable ocean future

International audienceThe ocean has recently taken centre stage in the global geopolitical landscape. Despite rising challenges to the effectiveness of multilateralism, attention to ocean issues appears as an opportunity to co-create pathways to ocean sustainability at multiple levels. The ocean science community, however, is not sufficiently well organised to advance these pathways and provide policy input. The Intergovernmental Panel on Climate Change and the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services demonstrate how knowledge consensus and integration have been instrumental in charting global pathways and eliciting commitments to address, respectively, climate change and biodiversity loss. An equally impactful global platform with a thematic focus on ocean sustainability is needed. Here we introduce the International Panel for Ocean Sustainability (IPOS) as a coordinating mechanism to integrate knowledge systems to forge a bridge across ocean science-policy divides collectively. The IPOS will enrich the global policy debate in the Ocean Decade and support a shift toward ocean sustainability

An evolution towards scientific consensus for a sustainable ocean future

International audienceThe ocean has recently taken centre stage in the global geopolitical landscape. Despite rising challenges to the effectiveness of multilateralism, attention to ocean issues appears as an opportunity to co-create pathways to ocean sustainability at multiple levels. The ocean science community, however, is not sufficiently well organised to advance these pathways and provide policy input. The Intergovernmental Panel on Climate Change and the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services demonstrate how knowledge consensus and integration have been instrumental in charting global pathways and eliciting commitments to address, respectively, climate change and biodiversity loss. An equally impactful global platform with a thematic focus on ocean sustainability is needed. Here we introduce the International Panel for Ocean Sustainability (IPOS) as a coordinating mechanism to integrate knowledge systems to forge a bridge across ocean science-policy divides collectively. The IPOS will enrich the global policy debate in the Ocean Decade and support a shift toward ocean sustainability