The "Cartion Park" Model for ERW on Croplands
Why do different ERW measurement approaches seem (?) to measure different amounts of CDR?Version 1.0 - by Dirk Paessler - 7. Dec 2022IntroductionAs we all know humans need to drive down their emissions...
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How CDR with rock weathering can be done practically and profitably (Part 1)
Our pilot project demonstrates the full value chain for ERW at € 230 per ton of CO₂ (with € 100-150 in sight)In our Enhanced Rock Weathering (ERW) pilot project with 1217 tons of basalt we are...
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Photo-Album: What ERW Looks Like — Projects Around the World
There are more weathering projects that actually spread rocks on fields than you might think! We have asked people from around the world that are doing enhanced weathering projects with basalt or other...
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Setting up the Carbdown Greenhouse Experiment 2023 (With Recipe And...
IntroductionApart from a reduction in CO₂ emissions by 90% the IPCC calls for “Carbon Dioxide Removal” (CDR) that pulls large amounts of CO₂ out of the atmosphere. One promising approach is spreading...
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Diagramm: The Annual Carbon Cycle on 1 m² of Cropland - With Enhanced Weathering
Enhanced Rock Weathering (ERW) involves the use of rock dusts (such as basalt) on croplands to remove Carbon Dioxide (CO₂) from the atmosphere, which is a necessary step to address the climate crisis....
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XXL Lysimeter Experiment: Scientific documentation of the first three months...
The building process of our XXL Lysimeter project in May 2022 and the monitoring of the first 3 months was closely documented by Christina Schubert in her Master Thesis “Counteracting global climate...
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Monitoring CO₂ Concentrations in Soil Gas: A Novel MRV Approach for...
After more than two years of ERW experiments we still fail to measure carbon dioxide removal with traditional chemical analyses and electronic soil sensors. But when we started to monitor CO₂...
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Video: Project Carbdown: Experiences with several MRV approaches (The theory...
To receive the next update of this story, please subscribe to our newsletter. Dirk Paessler, our CEO, held a session about our scientific work with measuring of enhanced rock weathering on croplands at...
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Quantification of ERW: Suggesting the concept of “stages” for MRV
To receive the next update of this story, please subscribe to our newsletter. Concept paper - Aug 7th 2023 (updated Nov 24th) - Dirk Paessler - V0.6Introduction Click here for a PDF version of this...
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Photo Diary: First 7 Months of Rock Weathering in the Carbdown Greenhouse
In January 2023 we set up one of the most ambitious greenhouse experiments for enhanced rock weathering. Since then a lot of things have been going on, including four near-disasters involving frost,...
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Turn it to *11*! The greenhouse tactics that accelerate our ERW research
Our ambitious rock weathering climate experiment has been set up in a greenhouse equipped with hundreds of sensors which monitor the ambient climate as well as the experiments themselves. We took our...
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Carbdown Greenhouse: How We Juggle Over 4 Million Data Points Daily in...
Hundreds of sensors monitor the weathering processes of 400 climate experiments for enhanced rock weathering in the Project Carbdown greenhouse. Some send new data as often as every few seconds. This...
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Data from the Greenhouse Experiment, Part 1: Biomass
We are on a quest to measure and quantify enhanced weathering of rock dust on soil. To achieve this we set up an extensive greenhouse experiment in January 2023 which hosts up to 400 lysimeter...
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CDR Measurement for ERW via Alkalinity in Leachate (Data From Our Greenhouse...
Join us on our endeavor to reliably measure the climate-positive effect of enhanced rock weathering (ERW) in agricultural settings by analyzing the water that leaches from the soil! In this blogpost...
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How much faster is rock weathering in our greenhouse compared to the field?
by Dirk Paessler - 6.12.2023 - V0.3 The following is a thought experiment, a simplified approach to address this question. We are not even trying to do an exact calculation here, because it isn’t clear...
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CDR Estimates Using Leachate Alkalinity - An Update With Improvements And One...
(Image by DALL-E for Carbon Drawdown Initiative) We update our document from 3 weeks ago about estimating carbon dioxide removal (CDR) by enhanced rock weathering (ERW) using measurements of...
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[XMAS Special] Watch Carbdown TV over the holidays!
Here is a look at Carbdown’s year 2023 with a collection of videos about our work!Picking up our holiday tradition we have a special, final blog post for 2023 for you. Last year we published a photo...
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24/7 Monitoring of soil gas pCO₂ concentrations in large scale ERW...
Blog article - Dirk Paessler, Jens Hammes, Ralf Steffens, Ingrid Smet - 21.1.2024 - V1.0Abstract In our endeavor to measure the climate relevant effects of rock weathering in agriculture we have been...
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Project Carbdown Greenhouse: Experiment Extension Week
Last week, exactly 365 days after setting up the first experiments, we have extended our greenhouse experiment with 78 new lysimeter experiments to now close to 400 experiments in total. We are closely...
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Carbdown Fluxmeter Army: Building Robotic Scientific Instruments For CO₂...
Why and how we built our army of autonomous CO₂ fluxmetersBlog article - V1.0 - Feb 8th 2024 - Dirk Paessler, Ralf Steffens, Jens Hammes, Anna Stöckel, Ingrid Smet Introduction Download a PDF of this...
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