And then, after one final reminder that the city will officially be worshipping fossil fuel next week, I got back home, with a loaf of bread for my lunch picked up in the city centre and a 20 kg sack of olivine ("greensand") which will eventually absorb about 20 kg of CO2 when I use it in the garden. I don't use any fossil fuels, but others unfortunately still do.
#velomobile #regel17 #cycling #biketooter #weathering #enhancedweathering #olivine #greensand

Spent yesterday out in the field helping Quinn Zacharias prepare for their big enhanced weathering field trials! Soon, they'll amend the soils with basalt powder, which will (hopefully!) remove CO2 from the atmosphere.

The project is unique, because they will apply basalt to a complete watershed. Plus the catchment is continuously monitored and has ~60 years of baseline data! Can't wait for their results! 🤓

#ERW #CDR #MRV #enhancedweathering #fieldwork

This morning's exercise ride was a 34 km round trip to collect another 20 kg sack of greensand. We've been using it with our potplants, mixed with compost from the garden to start tomatoes, and here in the front garden it's levelled up the ground above our potatoes.
Over time, each sack removes 20 kg of CO2 from the atmosphere and the process is beneficial to growing plants. Three sacks make a very small difference to our historical emissions, but if I'm going to buy soil of some kind for the garden it may as well be this. I certainly won't buy #peat which would help to destroy an ecosystem somewhere and release CO2 into the atmosphere.
#olivine #greensand #weathering #enhancedweathering #regel17 #

👏👏👏 @CarbonxClimate + great first portfolio of projects from @CarbonCaptureUS @inplanet_earth @vesta_earth @sonnenerde @undocarbon
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RT @CO2Council
It's great to see many of our members working together - congrats @CarbonxClimate and team for these $1m+ CDR purchases https://carbonx.world/carbonx-facilitates-a-new-1m-round-of-carbon-removal-purchases/
#carbonremoval #climatechange #enhancedweathering #directaircapture
https://twitter.com/CO2Council/status/1636458261309427712

🪨🚜🌧️🌊
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RT @undocarbon
In 2023, UNDO is scheduled to spread 25,000 tonnes of crushed basalt each month, removing an estimated 75,000 tonnes of CO₂ from the atmosphere 

Our aim is to remove 1 million tonnes of CO₂ by 2025, a first step towards billion-tonne scale operations.

#EnhancedWeathering
https://twitter.com/undocarbon/status/1625106870477156352

Photos of this morning's recreational ride. It took an hour and ten minutes to ride 37 km, my average speed being pulled down by riding slowly into a farmyard at around the half way point to buy another 20 kg sack of olivine.
We've been using this sand-like ground up olivine in pot plants indoors and also in the garden to fill gaps.
Plants seem to grow well in it.
Olivine is one of several minerals which absorb CO2 from the air as they weather so my feeling is that if I'm going to spend money on something to put in the garden or use for planting indoors, why not use olivine which has a small positive effect on the climate?
#regel17 #velomobile #greensand #olivine #weathering #enhancedweathering

RT @IngridSmet_geo
And we made it!! 🙌The largest #enhancedweathering greenhouse experiment 🧪 to quantify CDR has kicked off... Truly epic two days setting it up with all of you 💚 @dpaessler @RSteffanides @MEVorrath @GeoHartmann @MathildeHagens @JelleBijma @tahhco2 @PatrickNdmr et al. https://twitter.com/carbon_drawdown/status/1619106008445370368

RT @IngridSmet_geo@twitter.com

And we made it!! 🙌The largest #enhancedweathering greenhouse experiment 🧪 to quantify CDR has kicked off... Truly epic two days setting it up with all of you 💚 @dpaessler@twitter.com @RSteffanides@twitter.com @MEVorrath@twitter.com @GeoHartmann@twitter.com @MathildeHagens@twitter.com @JelleBijma@twitter.com @tahhco2@twitter.com @PatrickNdmr@twitter.com et al. https://twitter.com/carbon_drawdown/status/1619106008445370368

🐦🔗: https://twitter.com/IngridSmet_geo/status/1619455305754238976

@FransVeldman @henkdeligt @haayman Meestal waar, maar er zijn manieren om CO2 op te nemen die permanent zijn zonder kost van teveel energie. Bijvoorbeeld weathering van minerals.
Olivijn is een van de meest voorkomende minerals op aarde en vormt een groot deel van de aardkorst. Normaalijk reageert het langzaam met water en CO2 uit de lucht, waarbij het koolstof opslaat op een manier die veel energie kost om het vrij te maken. Als we het mineraal mijnen en vermalen, gaat dit proces veel sneller.
Het lijkt mogelijk om olivijn te mijnen en te vermalen op een manier waarbij minder CO2 vrijkomt dan het mineraal kan opnemen.
In Nederland is Olivine verkocht onder de naam greensand. Ik heb er een beetje van in mijn tuin.
Dit is natuurlijk geen oplossing voor eindeloze gebruik van fossiele brandstoffen - daar moeten een einde aan komen.
https://en.wikipedia.org/wiki/Olivine
https://en.wikipedia.org/wiki/Enhanced_weathering
#weathering #greensand #olivine #EnhancedWeathering

RT @undocarbon
Beautiful snowy scenes of climate tech in action ❄️

We spread approximately 1750 tonnes of crushed basalt rock over 195 acres of land on this corn farm in Washington.

The field was covered over again with fresh snow the next day!

#EnhancedWeathering #UNDOCarbon

❄️🪨🚜
---
RT @undocarbon
Beautiful snowy scenes of climate tech in action ❄️

We spread approximately 1750 tonnes of crushed basalt rock over 195 acres of land on this corn farm in Washington.

The field was covered over again with fresh snow the next day!

#EnhancedWeathering #UNDOCarbon
https://twitter.com/undocarbon/status/1605263405660930048

❄️🪨🚜
---
RT @undocarbon
Beautiful snowy scenes of climate tech in action ❄️

We spread approximately 1750 tonnes of crushed basalt rock over 195 acres of land on this corn farm in Washington.

The field was covered over again with fresh snow the next day!

#EnhancedWeathering #UNDOCarbon
https://twitter.com/undocarbon/status/1605263405660930048

@davidho
What would @Peters_Glen say, do you agree with David Ho, categorizing #EnhancedWeathering as really not a terrestrial #CDR technique but ocean-based CDR because of its effects on alkalinity?

@davidho I spoke to the Head of Research (Mel Murphy), and the Head of Carbon (Simon Manley) of Undo about this very topic #EnhancedWeathering on a recent episode of my #Climate 21 podcast https://www.climate21podcast.com/1329991/11480043-can-enhanced-weathering-be-used-to-suck-co2-out-of-the-atmosphere-at-scale-a-chat-with-undo

For carbon dioxide removal (#CDR), does anyone else think of #EnhancedWeathering, which is usually thought of as a terrestrial technique, as just another way to eventually add #alkalinity to the #ocean so it's really ocean CDR and #OceanAlkalinityEnhancement (#OAE)?

New blog by Carbon Drawdown Initiative, showing what #EnhancedWeathering looks like, with pictures from experiments around the world.

More than 50.000 tons of silicate materials were applied in 2022 and more than 500.000 tons are planned for 2023!

Including our experiments in Antwerp that you can also follow on instagram: https://www.instagram.com/enhancedweatheringrocks/

#climatechange #climateaction #CO2removal #CDR

https://www.carbon-drawdown.de/blog/2022-12-15-photo-album-enhanced-weathering-projects-around-the-world

@leahstokes I work on terrestrial #carbon and nutrient cycling. Currently focussing on land-based CO2 removal #CDR, especially #EnhancedWeathering.

Moved to #fediscience.

#introduction

I am a scientist with a background in terrestrial #carbon and nutrient cycling. Currently leading a team working on land-based CO2 removal #CDR, especially #EnhancedWeathering.

Interested in everything related to #ClimateChange.

#SciComm: mostly climate change outreach and education.
Compiled a climate book (in Dutch): https://www.aspeditions.be/nl-be/book/van-klimaatverandering-naar-systeemverandering-herziene-editie/18939.htm