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May 4, 2023 โ€ข 9 tweets โ€ข 6 min read โ€ข Read on X
๐Ÿšจ๐๐„๐– ๐’๐“๐”๐ƒ๐˜๐Ÿšจ

"Stratospheric Aerosol Geoengineering (SAG) is a proposed #SolarGeoengineering approach to offset #ClimateChange impacts, but may have -ve effects on hydrology."

In this regard new study is published in "๐ถ๐‘™๐‘–๐‘š๐‘Ž๐‘ก๐‘’ ๐ท๐‘ฆ๐‘›๐‘Ž๐‘š๐‘–๐‘๐‘ ."

Details โฌ‡๏ธ
๐Ÿงต1/9 Image
"Using a climate model, researchers quantify the sensitivity of the tropical monsoon precipitation to the meridional distribution of volcanic #SulfateAerosols prescribed in the #stratosphere in terms of the changes in aerosol optical depth (AOD)."
2/9 Image
"In the experiments, large changes in summer monsoon ๐ŸŒง๏ธ in the tropical monsoon areas are simulated, mainly over the Indian region, in alliance with meridional shifts in the location of the intertropical convergence zone caused by changes in interhemispheric AOD differences."
3/9 Image
Based on the simulations of this study, authors "estimate a sensitivity of โˆ’1.8ยฐยฑ0.0ยฐ meridional shift in global mean ITCZ & a 6.9ยฑ0.4% reduction in NH monsoon index (NHMI; summer monsoon precipitation over NH monsoon regions) /0.1 interhemispheric AOD difference (NH-SH)."
4/9 Image
This study also "quantify the sensitivity in terms of interhemispheric (IH) differences in effective #RadiativeForcing & IH temperature differences: 3.5ยฑ0.3% change in NHMI per unit (Wmโปยฒ) IH radiative forcing difference & 5.9ยฑ0.4% change/unit (ยฐC) IH temp. difference."
5/9 ImageImage
"Similar sensitivity estimates are also made by the researchers of this study for the Indian monsoon precipitation."
6/9 ImageImage
"The establishment of the relationship btw interhemispheric AOD (or radiative forcing) differences and ITCZ shift as discussed in this paper will further facilitate and simplify understanding of the effects of #StratosphericAerosolGeoengineering on tropical monsoon rainfall."
7/9 Image
Read the study entitled, "Quantification of tropical monsoon precipitation changes in terms of interhemispheric differences in stratospheric sulfate aerosol optical depth" here โฌ‡๏ธ
researchgate.net/publication/37โ€ฆ

#StratosphericAerosolGeoengineering
#SolarGeoengineering

8/9

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More from @geoengineering1

Jul 9
๐ŸšจFrom Air to Stone๐Ÿšจ

New study revealed that Kenyan fig trees can literally turn parts of themselves to stone, using microbes to convert internal crystals into limestone-like deposits that lock away CO2, sweeten surrounding soil & still yield fruit. #CarbonRemoval

DETAILS๐Ÿงต1/8 Image
2/ Some Kenyan fig trees, like Ficus wakefieldii, store COโ‚‚ not just as organic matter (wood/leaves) but also as calcium carbonate (CaCOโ‚ƒ) - the same mineral as chalk or limestone.

This process is called the oxalate-carbonate pathway (OCP).
3/ PROCESS:

First, the tree forms calcium oxalate crystals inside its wood.

Then, special microbes (oxalotrophic microorganisms) or fungi convert these crystals into CaCOโ‚ƒ.

This locks up carbon in mineral form that can persist in soil far longer than organic carbon. Image
Read 9 tweets
Jul 8
๐Ÿšจ๐Ÿ—“Carbon Removal Events๐Ÿ—“๐Ÿšจ

Here's a list of what's coming up this week (08 July - 14 July 2025) in the field of #CarbonDioxideRemoval:

๐Ÿ”—:

๐Ÿงต1/15 teamup.com/kshqbfhrqkw36sโ€ฆImage
EVENTโ€”5th Brazilian Congress of Remineralizers Conference

๐Ÿ—“8-11 July 2025 | Brazil
๐Ÿ”—

2/15remineralize.org/2025/01/5th-brโ€ฆ
EVENTโ€”Can Germany lead the way on CDR Policy? by CDR Policy Scoop

๐Ÿ—“09 July 2025 | Online
๐Ÿ”—

3/15linkedin.com/events/cangermโ€ฆ
Read 16 tweets
Jul 6
๐Ÿ“๐Ÿ’ก๐–๐ž๐ž๐ค๐ฅ๐ฒ ๐‚๐ƒ๐‘ ๐‡๐ข๐ ๐ก๐ฅ๐ข๐ ๐ก๐ญ๐ฌ๐Ÿ’ก๐Ÿ“

๐Ÿ“ฐ Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (30 June - 06 July 2025):

๐Ÿ”—:

๐Ÿงต0/19
@Climeworks raised $162 million Seriesโ€ฏE to scale Generationโ€‘3 direct air capture, cut costs to $400โ€“600/t, and grow its carbon removal portfolio.

1/19
climeworks.com/press-release/โ€ฆ
Terra CO2 secured $124.5 million Seriesโ€ฏB to build commercial low-carbon cement facilities.

2/19
esgtoday.com/low-carbon-buiโ€ฆ
Read 22 tweets
Jul 2
๐ŸšจWhat if we bet too much on future carbon removal tech and it doesnโ€™t deliver?

New study shows that over-relying on #CDR like DACCS & BECCS could let fossil fuel emissions continue longer, delay action, and raise costs later.

Key findings๐Ÿงต1/9 Image
2/ Many net-zero plans assume large-scale CDR. But techs like direct air capture (DACCS) & bioenergy with CCS (BECCS) are tiny today and scaling them is risky due to land, energy & cost barriers.
3/ Researchers ran 6 scenarios using GCAM:

-Stage 1: Plan for high or low CDR now
-Stage 2: Learn mid-century whether high CDR is actually feasible or not, and then adjust policy or not

They tracked emissions, energy shifts, costs & who bears the burden. Image
Read 10 tweets
Jul 1
๐Ÿšจ๐Ÿ—“Carbon Removal Events๐Ÿ—“๐Ÿšจ

Here's a list of what's coming up this week (01 July - 07 July 2025) in the field of #CarbonDioxideRemoval:

๐Ÿ”—:

๐Ÿงต1/11 teamup.com/kshqbfhrqkw36sโ€ฆImage
EVENTโ€”This is CDR - Embedding CDR: Unlocking Scale Through Industrial Integration with Cara Maesano, PhD. by @openaircollect

๐Ÿ—“01 July 2025 | Online
๐Ÿ”—

2/11lu.ma/ilq6xg6j
CALL FOR CONSULTATIONโ€”EU released draft rules for certifying carbon farming, permanent removals, and storage in products

๐Ÿ—“Public comment open until 01 July 2025
๐Ÿ”—

3/11ec.europa.eu/info/law/betteโ€ฆ
Read 12 tweets
Jun 16
๐ŸšจTired of drowning in climate science papers?

๐ŸŽง Remove & Reflect Podcast does the digging for youโ€”turning research & reports into short, sharp episodes on #CDR & #SRM.

YouTube:youtube.com/@removeandreflโ€ฆ

Spotify:open.spotify.com/show/0dxuwkOuHโ€ฆ

Check out some must-listen episodes:๐Ÿงต1/12
This episode dives into a radical proposal: using a buried nuclear explosion on the seafloor to break up basalt & speed up carbon removal via Enhanced Rock Weathering. The goal? Sequester 30 years of global CO2.

2/12
This episode unpacks a preprint by Hosea Olayiwola Patrick drawing lessons from COVID-19 for solar geoengineering.

3/12
Read 13 tweets

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