11.01.2021

# New Publications

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Tipper, Edward T.; et al. (2021): Global silicate weathering flux overestimated because of sediment–water cation exchange

Tipper, Edward T.; Stevenson, Emily I.; Alcock, Victoria; Knight, Alasdair C. G.; Baronas, J. Jotautas; Hilton, Robert G. et al. (2021): Global silicate weathering flux overestimated because of sediment–water cation exchange. In PNAS 118 (1), e2016430118. DOI: 10.1073/pnas.2016430118.

"We demonstrate that the (million-year) carbon flux associated with mineral dissolution has been overestimated by up to 28% because of a reactive pool of elements transported with river-borne suspended sediment. This is most acute in regions of high erosion, where silicate weathering is thought to be most intense."

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11.01.2021

# New Publications

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Tan, Raymond R.; Aviso, Kathleen B. (2021): On life-cycle sustainability optimization of enhanced weathering systems

Tan, Raymond R.; Aviso, Kathleen B. (2021): On life-cycle sustainability optimization of enhanced weathering systems. In Journal of Cleaner Production, p. 125836. DOI: 10.1016/j.jclepro.2021.125836.

"In this letter, we discuss the limitations of life-cycle assessment of enhanced weathering, and then propose a more comprehensive life-cycle optimization approach, where the system configuration can be automatically synthesized to maximize environmental performance. This concept can be extended further to life-cycle sustainability optimization by including economic and social dimensions."

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14.12.2020

# New Publications

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Pogge von Strandmann, Philip A.E.; et al. (2021): The lithium and magnesium isotope signature of olivine dissolution in soil experiments

Pogge von Strandmann, Philip A.E.; Renforth, Phil; West, A. Joshua; Murphy, Melissa J.; Luu, Tu-Han; Henderson, Gideon M. (2021): The lithium and magnesium isotope signature of olivine dissolution in soil experiments. In Chemical Geology 560, p. 120008. DOI: 10.1016/j.chemgeo.2020.120008.

"This study presents lithium and magnesium isotope ratios of soils and their drainage waters from a well-characterised weathering experiment with two soil cores, one with olivine added to the surface layer, and the other a control core."

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14.12.2020

# New Publications

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Zinke, Laura (2020): Wearing down olivine

Zinke, Laura (2020): Wearing down olivine. In Nat Rev Earth Environ, Research Highlight. DOI: 10.1038/s43017-020-00132-w.

"Silicate minerals react with CO2 as they weather, converting CO2 to bicarbonate and effectively removing it from the atmosphere. Enhanced weathering of silicate minerals, such as olivine, is one proposed method to sequester atmospheric CO2 in efforts to mitigate climate change."

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30.11.2020

# Media

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Medill Reports Chicago: Scientists look to remove CO2 from atmosphere by accelerating natural Earth processes

"But now, human-forced climate change is warming Earth too quickly for it to be controlled by natural silicate weathering, which can take hundreds of thousands of years to work. To have a larger impact, Graham said we’d have to use enhanced weathering to speed up the process."

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17.11.2020

# Media

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Carbon Drawdown Initiative: Negative Emissions: “Only nature-based solutions can master the job”

"An Interview with Professor Jelle Bijma about enhanced weathering."

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01.11.2020

# Media

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Podcast: Reviewer 2 does geoengineering: Kyle Manley discusses modelling Olivine weathering to sequester carbon in a volcanic coastal environment

"Kyle's brilliant paper is: Kyle Manley, T. Salles and R. D. Müller (2020) ‘Modeling the Dynamic Landscape Evolution of a Volcanic Coastal Environment Under Future Climate Trajectories’."

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19.10.2020

# Calls & events

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Job: Project Vesta: Oceanographer – Geological, Physical and/or Chemical

No Deadline

"The oceanographer will be involved in all aspects of our scientific program, including guiding the project team’s decisions, laboratory studies, pilot studies, modeling work, writing papers, and designing new research projects that help us answer essential questions about the safety and feasibility of this approach to carbon dioxide removal."

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19.10.2020

# Calls & events

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Job: Project Vesta: Marine Geochemical Analyst/Lab Manager

No Deadline

"We are preparing to deploy our first pilot project on a Caribbean island to quantify the effects of olivine on the ecosystem and we have an immediate need for an “everything” analyst and lab manager to help run and oversee the experiment."

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15.10.2020

# New Publications

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Manley, Kyle; et al. (2020): Modeling the Dynamic Landscape Evolution of a Volcanic Coastal Environment Under Future Climate Trajectories

Manley, Kyle; Salles, T.; Müller, R. D. (2020): Modeling the Dynamic Landscape Evolution of a Volcanic Coastal Environment Under Future Climate Trajectories. In Front. Earth Sci. 8, p. 437. DOI: 10.3389/feart.2020.550312.

"Olivine weathering is a natural process that sequesters carbon out of the atmosphere, but is now being proposed as a strategy that can be artificially implemented to assist in the mitigation of anthropogenic carbon emissions. We use the landscape evolution model Badlands to identify a region (Tweed Caldera catchment in Eastern Australia) that has the potential for naturally enhanced supply of mafic sediments, known to be a carbon sink, into coastal environments."

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