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Carbon Removal & Solar Geoengineering updates by Andrew Lockley & team. RT=/=E

Also see Carbon Removal Updates Substack (carbonremovalupdates.substack.com/) & Solar Geoengineering Updates Substack (solargeoengineeringupdates.substack.com/).
June 24, 2025 at 5:53 PM
🚨 #SolarGeoengineering field trials, fierce debates, fresh funding, future risks & what’s next—May was a big month for #SRM.

Read our newsletter for the full roundup of everything you need to know from the past month:
solargeoengineeringupdates.substack.com/p/monthly-so...
June 5, 2025 at 5:00 PM
🚨JOB OPPORTUNITY🚨

Program Director, Harvard Solar Geoengineering Research Program at Harvard University Faculty of Arts and Sciences

📍USA - MA - Cambridge
🔗: main.hercjobs.org/jobs/2127509...

#SolarGeoengineering #jobs
April 28, 2025 at 9:27 PM
🚨We’re receiving amazing feedback on our #SRM newsletter lately🚨

If you’re enjoying this newsletter, consider forwarding it to a colleague or sharing on socials. Every share helps us grow the conversation around responsible #SolarGeoengineering.

🔗: solargeoengineeringupdates.substack.com
April 16, 2025 at 4:52 PM
8/ Scenario 4: Aerosol G2 (Cooperate to Deploy SAI)

The US & China co-deploy SAI, managing the climate together

But would this create a long-term dependency on geoengineering? And how would the rest of the world react?
February 27, 2025 at 8:27 PM
7/ Scenario 3: Race to the Stratosphere (Compete to Deploy SAI)

One nation moves 1st, deploying SAI unilaterally. This forces the other to decide whether to respond with deterrence or counter-deployment

Risks include diplomatic tensions, climate instability & strategic coercion
February 27, 2025 at 8:27 PM
6/ Scenario 2: Decarbonization G2 (Cooperate to Deter SAI)

US & China agree NOT to deploy SAI unilaterally & instead invest in mitigation & adaptation

This strengthens climate governance but requires sustained trust in an era of strategic rivalry
February 27, 2025 at 8:27 PM
5/ Scenario 1: Great Power Status Quo (Compete & Deter SAI)

Both nations reject SAI deployment & attempt to deter each other from using it

This maintains current power structures but leaves climate risks unaddressed—potentially forcing last-minute SG decision as warming worsens
February 27, 2025 at 8:27 PM
3️⃣Compete to Deploy: A geoengineering arms race—who controls the stratosphere first?

4️⃣ Cooperate to Deploy: A US-China-led climate intervention—while managing global influence.
February 27, 2025 at 8:27 PM
3/ This creates a security gap:

The US & China are locked in great power competition, yet neither has a clear strategy on SAI.

Who moves first? Who controls the stratosphere? The dilemma: Deploy & gain influence—or deter & risk falling behind?
February 27, 2025 at 8:27 PM
2/ SAI could cool the planet—but who controls it controls global climate security.

Key risks of unilateral deployment:
🔴 Termination shock
🔴 Environmental disruptions
🔴 SAI as a potential weapon
🔴 Geopolitical leverage—both a threat & opportunity
February 27, 2025 at 8:27 PM
🚨The Big Green Button: Who Gets to Push It?

" #Geoengineering isn't just a climate issue—it's a geopolitical chess game. Only US & China have the power to unilaterally deploy #SAI at scale."

Will they race to control the skies or seek climate diplomacy? New study explores 4 possible futures:🧵1/9
February 27, 2025 at 8:27 PM
8/ Haverly estimates the cost of this endeavor at around $10 billion.

Furthermore, the paper argues that, since the explosion is deep underground, it would minimize radiation release and environmental damage.
January 30, 2025 at 10:14 PM
6/ Haverly estimates that a single explosion could sequester 30yrs’ worth of CO₂ emissions.

But here’s where things get even more mind-boggling. The bomb required for this plan would need to be 1,600x more powerful than Tsar Bomba, the largest nuclear explosion ever detonated.
January 30, 2025 at 10:14 PM
🚨💣The strangest geoengineering idea yet?💣🚨

A new paper suggests detonating an absolutely gigantic nuclear bomb (1,600x bigger than Tsar Bomba) deep beneath the seabed to accelerate carbon removal #CDR.

A thread on this bold climate proposal:🧵1/11
January 30, 2025 at 10:14 PM
🗣️We've already received great appreciation for this yearly roundup and our Solar Geoengineering Updates Substack Newsletter from prominent #geoengineering researchers:

🧵12/12
January 13, 2025 at 9:23 PM
9/ 𝐏𝐞𝐫𝐬𝐨𝐧𝐚𝐥 𝐌𝐢𝐥𝐞𝐬𝐭𝐨𝐧𝐞𝐬

2024 marked a major growth year for us! We fully ramped up operations for our Solar Geoengineering newsletter:
solargeoengineeringupdates.substack.com
January 13, 2025 at 9:23 PM
8/ 𝐑𝐞𝐬𝐞𝐚𝐫𝐜𝐡 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬

-In 2024, the number of SRM studies published was higher than in 2023 or any other previous year

-There was a notable increase in articles addressing SAI

-Numerous publications explored SRM governance frameworks & ethical considerations
January 13, 2025 at 9:23 PM
7/ 𝐒𝐑𝐌 𝐢𝐧 𝐌𝐞𝐝𝐢𝐚

𝑆𝑅𝑀 𝑓𝑒𝑎𝑡𝑢𝑟𝑒𝑑 𝑝𝑟𝑜𝑚𝑖𝑛𝑒𝑛𝑡𝑙𝑦 𝑖𝑛 𝑡𝑜𝑝 𝑜𝑢𝑡𝑙𝑒𝑡𝑠 𝑙𝑖𝑘𝑒:
-MIT Technology Review
-The New York Times
-The Conversation
-Forbes
January 13, 2025 at 9:23 PM
6/ 𝐄𝐬𝐬𝐞𝐧𝐭𝐢𝐚𝐥 𝐒𝐑𝐌 𝐑𝐞𝐚𝐝𝐬

𝑆𝑜𝑚𝑒 𝑚𝑢𝑠𝑡-𝑟𝑒𝑎𝑑𝑠 𝑓𝑟𝑜𝑚 2024:
-Evidence Review Report on SRM (EU)
-Ethical Framework Principles for CI Research (AGU)
-SCoPEx Advisory Committee Report
-Implications for governance of Stardust’s activities @jpasztor.bsky.social
January 13, 2025 at 9:23 PM
5/ 𝐑𝐞𝐬𝐭𝐫𝐢𝐜𝐭𝐢𝐨𝐧𝐬 & 𝐁𝐚𝐧𝐬 𝐨𝐧 𝐒𝐑𝐌

𝐶ℎ𝑎𝑙𝑙𝑒𝑛𝑔𝑒𝑠 𝑡𝑜 𝑆𝑅𝑀 𝑎𝑙𝑠𝑜 𝑚𝑎𝑑𝑒 ℎ𝑒𝑎𝑑𝑙𝑖𝑛𝑒𝑠:
-Harvard ended its SCoPEx project
-U.S. outdoor MCB experiments shut down
-Tennessee banned SRM, with more bans proposed in other states
January 13, 2025 at 9:23 PM
4/ 𝐓𝐨𝐩 𝐒𝐑𝐌 𝐒𝐭𝐨𝐫𝐢𝐞𝐬

𝐾𝑒𝑦 𝑑𝑒𝑣𝑒𝑙𝑜𝑝𝑚𝑒𝑛𝑡𝑠 𝑓𝑟𝑜𝑚 2024:
-WCRP launched the CI Research Lighthouse Activity
-UW conducted the 1st US outdoor test of MCB
-Uni of Chicago launched a Climate Systems Engineering initiative
-Reflective introduced an SAI simulator
January 13, 2025 at 9:23 PM
3/ 𝐒𝐑𝐌 𝐅𝐮𝐧𝐝𝐢𝐧𝐠 𝐀𝐧𝐧𝐨𝐮𝐧𝐜𝐞𝐦𝐞𝐧𝐭𝐬

2024 𝑠𝑎𝑤 ℎ𝑢𝑔𝑒 𝑓𝑖𝑛𝑎𝑛𝑐𝑖𝑎𝑙 𝑐𝑜𝑚𝑚𝑖𝑡𝑚𝑒𝑛𝑡𝑠:
-ARIA allocated $75M to SRM research
-Simon Foundation pledged $50M for SRM research
-UKRI & NERC launched a £10.5M, 5yr research program
January 13, 2025 at 9:23 PM
🚨2024 Year in Review: Solar Geoengineering Edition🚨

As we enter 2025, we’re excited to share our 𝐨𝐧𝐞-𝐨𝐟-𝐢𝐭𝐬-𝐤𝐢𝐧𝐝 yearly summary for SRM: "Solar Geoengineering in 2024: Rays of Hope, Clouds of Doubt."

Here’s what we cover in this comprehensive review:🧵1/12
January 13, 2025 at 9:23 PM
7/ 𝐘𝐨𝐮𝐓𝐮𝐛𝐞 𝐏𝐥𝐚𝐲𝐥𝐢𝐬𝐭

Our 𝐶𝑙𝑖𝑚𝑎𝑡𝑒 𝐸𝑛𝑔𝑖𝑛𝑒𝑒𝑟𝑖𝑛𝑔 YouTube Playlist offers diverse content on SRM & CDR, including expert talks, educational lectures, project showcases & discussions from leading organizations.

🔗 youtube.com/playlist?lis...
January 9, 2025 at 1:09 PM