#enhancedweathering

#WeekendReading: Gernon et al. show that #EnhancedWeathering of mafic rocks during continental breakup and early seafloor spreading could drive a succession of #anoxic events.
The interactions between #weathering feedback and #ClimateChange are not straightforward.
(Also, remember - weathering releases nutrients)

https://www.nature.com/articles/s41561-024-01496-0

"enhanced weathering (EW) of silicate rocks … on farmlands is a promising scalable atmospheric carbon dioxide removal (CDR) strategy …

modeling suggests that deployment of EW with basalt across major agricultural regions worldwide could sequester up to two billion metric tons of CO2 annually"

Not bad. But not nearly enough regarding around 37 billion metric tons of CO2 emissions worldwide every year: https://www.statista.com/statistics/276629/global-co2-emissions/

#EnhancedWeathering #Basalt #ClimateCrisis #CarbonCaptureStorage #CCS

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

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 #

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

@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 os 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

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

Time for a proper #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.