How to avoid confusion about the seemingly straightforward use of alkalinity to quantify CO₂ removal
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An overview of our enhanced weathering experiments in fields and in a greenhouse.
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How we calculate the amount of CO₂ that has been removed from the atmosphere by weathering in our lysimeter experiments.
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Insights from several hundred soil EC sensors and several thousand water analyses in three long-term weathering experiments
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A conference presentation by Jens Hammes at the 3rd International Conference on Negative CO2 Emissions, 2024 in Oxford.
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A conference presentation by Dr. Ingrid Smet
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Keeping a long-term monoculture greenhouse experiment with hundreds of pot experiments alive and working over 2-3 years is not as easy as one could think.
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Two important new publications were published that we want to draw your attention to
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While reanalyzing our data we found that the differences in CO2 effluxes between treatments/controls are maintained across the whole temperature spectrum. Temperature differences are not the explanation for the differences in effluxes between variations.
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A story about the IT technology behind “the most closely monitored and pampered blades of grass I've ever seen” in our greenhouse.
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Introducing our carbon-focused thought-model of the processes that occur in the soil after adding rock amendments for EW.
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We present insights we gained from CO₂ efflux, soil pCO₂ and soil water leachate alkalinity data of 400 greenhouse experiments for enhanced weathering (EW).
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Why and how we built our army of autonomous CO₂ fluxmeters
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Last week we have extended our greenhouse experiment with 78 new lysimeter experiments to now close to 400 experiments in total.
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We document our latest pCO₂ sensor design and share a preview of our pCO₂ data while comparing these with the CDR estimates we recently derived from alkalinity.
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Here is a look at Carbdown’s year 2023 with a collection of videos about our work!
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We update our document from 3 weeks ago about estimating carbon dioxide removal (CDR) by enhanced rock weathering (ERW) using measurements of alkalinity in leachate waters.
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How do we “transfer” weathering rates measured in our greenhouse to the outside world?
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In this blogpost we explain how the carbon dioxide removal (CDR) effects of weathering rock can be estimated using alkalinity measurements and what early results we see in our greenhouse experiment.
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In part one of our greenhouse data series we publish the biomass data from our greenhouse experiment (how much has biomass changed after adding rock dust to different soils?).
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