Monat: Oktober 2022

Study demonstrates efficiency of deltaic sediments for storing organic carbon for hundreds of thousands of years

by University of Barcelona on phys.org

An international research team with participation of the UAB team has succeeded in quantifying the volume of continental organic carbon stored in delta sediments from 75 million years ago. The research, published in Nature Geoscience, demonstrates that deltas are large stores of the planet’s carbon and, therefore, important climate regulators over geological time periods.

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Survive and Thrive calls for urgent action on carbon removal

media release on pics.uvic.ca

„British Columbia immediately needs an ambitious and collaborative strategy for the removal of significant amounts of carbon dioxide (CO2) from the atmosphere, according to a new report released today by the Pacific Institute for Climate Solutions (PICS): Written by Dr. Devin Todd, PICS Researcher in Residence in Negative Emissions Technologies, Survive and Thrive: Why BC needs a CO2 removal strategy now explores why such a strategy is necessary right now, what it could consider and include – and why public leadership is vital to its creation and success.“

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Craik et al. (2022): The Legal Framework for Carbon Dioxide Removal in Canada

Neil Craik, Anna-Maria Hubert, Chelsea Daku IN: Alberta Law Review, Vol 59, No 4, 38 pp.

This article provides an overview of Canada’s existing legal framework that will apply to various CDR methods as they are developed. It examines the legal framework as it may apply to CDR measures collectively (particularly in consideration of how these technologies will be treated in Canada’s broader climate framework), and individually. It aims to take stock of existing federal and provincial rules and assess the potential gaps that will need to begin to be addressed as Canada develops CDR capacities.

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Sovacool et al. (2023): Beyond climate stabilization: Exploring the perceived sociotechnical co-impacts of carbon removal and solar geoengineering

Benjamin K. Sovacool, Chad M. Baum, Sean Low IN: Ecological Economics 204, Part A, 107648, https://doi.org/10.1016/j.ecolecon.2022.107648

The authors examined the prospective co-impacts of carbon removal (or negative emissions) and solar geoengineering. Based on (..) diverse expert interviews (N = 125), and using a sociotechnical approach, in this study the authors identify 107 perceived co-impacts related to the deployment of carbon removal and solar geoengineering technologies. Slightly less than half (52) were identified as positive co-impacts (38 for carbon removal, 14 for solar geoengineering), whereas slightly more than half (55) were identified as negative co-impacts (31 for carbon removal, 24 for solar geoengineering).

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Engineered Carbon Dioxide Removal: Scalability and Durability

by Mahmoud Abouelnaga, Center for Climate and Energy Solutions, October 2022, 20 pp.

To inform policymakers considering these near- and long-term questions, C2ES launched a series of “Closer Look” briefs to investigate important facets of the decarbonization challenge, focusing on key technologies, critical policy instruments, and cross-sectoral challenges. These briefs will explore policy implications and outline key steps needed to reach net-zero by mid-century.

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Schlesinger (2022): Biogeochemical constraints on climate change mitigation through regenerative farming

William H. Schlesinger IN: Biogeochemistry 161, 9–17, https://doi.org/10.1007/s10533-022-00942-8

This review suggests that most of the management practices associated with regenerative agriculture are not likely to lead to a large net sequestration of organic carbon in soils. Some improved management practices, such as increased fertilizer use, manuring, and applications of biochar, are constrained by biogeochemical stoichiometry and the availability of organic inputs. Other management practices, such as fertilizer applications, irrigation, and applications of ground silicate minerals, entail ancillary and off-site emissions of carbon dioxide that reduce the net sequestration of carbon in soils.

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Chemical engineers use artificial intelligence to accelerate advanced materials for carbon capture

by Craig Mc Manamon on hw.ac.uk (Heriot Watt University)

Chemical engineers at Heriot-Watt University have contributed to developing a machine-learning model that accurately predicts the heat capacity of metal-organic frameworks and other adsorbents. The study, published in Nature Materials, opens exciting opportunities for future carbon capture technologies.

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The Ocean Visions – UN Decade Collaborative Center for Ocean-Climate Solutions (OV – UN DCC)

…will engage with a global set of stakeholders and institutions to connect those with the capacity for generating new science and engineering knowledge to those with capacity to develop and test innovations and solutions. Among the challenges targeted are ocean-based solutions that will:

  • Mitigate and reverse the effects of climate change
  • Enhance food security from oceans
  • Build the climate resilience of marine ecosystems and coastal communities

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IEAGHG Webinar: Quantifying the socio-economic value of CCUS: a review

Tuesday 8 November 2022, 15:00 – 16:00 GMT

The study reviews three case studies that centre on the socio-economic impacts of achieving ambitious climate targets via the deployment of CCS and CDR technologies in different economic circumstances, each focusing on specific CCS and CDR applications. In compiling and discussing them in a single document, findings on the impacts of CCS and CDR deployment on regional economies and the relationship between industrial sectors and national strategic assets are discussed. Hosted by Keith Burnard, IEAGHG, the webinar will hear from Niall Mac Dowell and Piera Patrizio, both of Imperial College London.

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Terhaar et al. (2022): Observation-constrained estimates of the global ocean carbon sink from Earth system models

Jens Terhaar, Thomas L. Frölicher, Fortunat Joos IN: Biogeosciences, 19, 4431–4457, https://doi.org/10.5194/bg-19-4431-2022

Estimates of the ocean anthropogenic carbon uptake vary across various observation-based and model-based approaches. Here, the authors show that the global ocean anthropogenic carbon sink simulated by Earth system models can be constrained by two physical parameters, the present-day sea surface salinity in the subtropical–polar frontal zone in the Southern Ocean and the strength of the Atlantic Meridional Overturning Circulation, and one biogeochemical parameter, the Revelle factor of the global surface ocean.

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