The Ocean: A Solution to Climate Change?
Overview of ocean-based negative emissions technologies researched in EU-Horizon Project “OceanNETs”
Artwork: Rita Erven / GEOMAR/OceanNETs CC BY 4.0
Regulation of Negative Emissions Technologies Presents Many Challenges.
The ocean will play a key role in efforts to tackle the climate crisis, according to scientists and IPCC. The use of “negative emissions technologies” to enhance carbon sequestration and storage in the ocean is increasingly being discussed. In a study published in the scientific journal “Frontiers”, RIFS researchers Lina Röschel and Barbara Neumann describe the challenges that these technologies present. The existing regulatory and institutional frameworks are inadequate for the governance of these emerging technologies, they conclude. Instead, an approach is needed that integrates foresight mechanisms, considers the potential unintended impacts, and engages with diverse stakeholders.
According to scientists, the ocean’s capacity to remove and store carbon dioxide from the atmosphere could be enhanced by various means, including the addition of alkaline substances such as olivine into the upper ocean, for example. This process, also known as alkalinization, harnesses chemical processes to alter the geochemistry of seawater and thereby increase the uptake of carbon dioxide from the atmosphere. Other potential methods rely on restoring or expanding coastal ecosystems such as mangrove forests, which can absorb and store carbon dioxide in underlying sediments.
Unintended impacts could occur far from deployment sites
In their study, which was conducted as part of the EU-funded research project OceanNETs, the RIFS researchers offer an overview of the potential impacts of eight ocean-based negative emissions technologies on the marine environment and ecosystem services. Building on this, they analyse the existing governance framework and the demands that the deployment of these technologies would place on it.
The study also examines the potential unintended impacts of the selected technologies. Due to ocean currents, these could unfold far from initial deployment sites. “This aspect must not be disregarded in decision-making processes. What is needed is a broader perspective that considers how the potential impacts of negative emissions technologies will interact with the objectives of existing agreements governing marine environmental protection, biodiversity conservation or even socio-economic issues relating to sustainable development – in addition to international agreements that explicitly address, promote, or restrict their use,” explains Lina Röschel. The current international governance system, with its diverse agreements and regulations, institutions and responsibilities, is too fragmented to meet the complex requirements, according to Röschel.
Foresight key to good governance
According to the researchers, a foresight-oriented approach is needed in order to comprehensively and effectively regulate the use of these technologies in the future. “It is important that political, scientific, and societal actors engage with these issues today and develop approaches for the control and regulation of negative emission technologies – even if they are still under development in many cases, and their potential impacts cannot be precisely quantified,” says co-author Barbara Neumann, who argues that trade-offs should be minimised, and benefits maximized and distributed fairly across the globe.
Wissenschaftliche Ansprechpartner:
Lina Röschel: lina.roeschel@rifs-potsdam.de
Dr. Barbara Neumann: barbara.neumann@rifs-potsdam.de
Originalpublikation:
Röschel, L., & Neumann, B. (2023). Ocean-based negative emissions technologies: a governance framework review. Frontiers in Marine Science, https://doi.org/10.3389/fmars.2023.995130
Media Contact
All latest news from the category: Ecology, The Environment and Conservation
This complex theme deals primarily with interactions between organisms and the environmental factors that impact them, but to a greater extent between individual inanimate environmental factors.
innovations-report offers informative reports and articles on topics such as climate protection, landscape conservation, ecological systems, wildlife and nature parks and ecosystem efficiency and balance.
Newest articles
Organic matter on Mars was formed from atmospheric formaldehyde
Although Mars is currently a cold, dry planet, geological evidence suggests that liquid water existed there around 3 to 4 billion years ago. Where there is water, there is usually…
Engineers 3D print sturdy glass bricks for building structures
The interlocking bricks, which can be repurposed many times over, can withstand similar pressures as their concrete counterparts. What if construction materials could be put together and taken apart as…
New organic thermoelectric device
… that can harvest energy at room temperature. Researchers have succeeded in developing a framework for organic thermoelectric power generation from ambient temperature and without a temperature gradient. Researchers have…
