🚨A recent field study conducted over the Great Barrier Reef has provided key insights regarding sea spray aerosols (SSA).

For the first time, it shows that SSA can reach the cloud base height, advancing Marine Cloud Brightening (#MCB) research.

DETAILS🧵1/8 2/ MCB is a proposed climate intervention that aims to reflect more sunlight by enhancing marine clouds.

The concept relies on artificially generated sea spray aerosols (SSA) at the ocean surface and their transport in sufficient quantities to low-level maritime clouds.

🚨A new 3-year study found that by combining crushed rock + compost + biochar could remove 51.7 million tons of CO₂e/year—just by treating 8% of California’s rangelands.
#ERW #CDR #biochar

Here’s the details:🧵1/9 2/ Researchers spread finely crushed metabasaltic rocks across test plots in Browns Valley, California, in each of 3yrs.

Along with the crushed rock, some of the applications included compost or a combination of compost & biochar (burned pine & fir left over from local logging).

📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (14 April - 20 April 2025):

🔗:

🧵0/18 Microsoft has entered into the world’s largest carbon removal agreement, securing a 15-year contract to purchase 6.75 million metric tons of permanent CDR from AtmosClear, a subsidiary of Fidelis, utilizing BECCS technology.

1/18
reuters.com/sustainability…

🚨🗓We launched the first-of-its-kind Solar Geoengineering Events Calender last year, to create the go-to public resource for anyone tracking key events in #SRM. From conferences to job deadlines, we update it regularly.

🔗

Here’s what’s coming up:🧵1/15 teamup.com/ks64mmvtit583e… EVENT—Geoengineering & Climate Intervention: Unconference + Drinks by Emma K & SF Climate Week

🗓20 April 2025 | San Francisco, California
🔗

2/15lu.ma/huhghe6g

🚨🗓CDR REMINDERS!🗓🚨

Here's a list of what's coming up this week (15 April - 21 April 2025) in the field of #CarbonDioxideRemoval:

🔗🗓️Link to the CDR Events Calendar:


#CDREvents #CDRJobs #Deadlines

🧵1/12 teamup.com/kshqbfhrqkw36s… EVENT—This is CDR: Tropical Scale, Global Impact - NetZero’s Bold Biochar Vision for Brazil by @openaircollect

🗓15 April 2025 | Online
🔗

2/12lu.ma/a9ds7z4y

📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (07 April - 13 April 2025):

🔗:

🧵0/21 CO280 signed a landmark 3.69 million tonne agreement with Microsoft over 12 years to scale-up carbon dioxide removal in the us pulp and paper industry.

1/21
prnewswire.com/news-releases/…

🚨A new study from China introduced a groundbreaking system that couples liquid-based direct air capture (L-DAC) with diabatic compressed air energy storage (D-CAES). This integration captures CO₂ & stores energy at competitive costs—$0.53/kWh & $259/tCO₂. #DAC

DETAILS🧵1/8 2/ Led by researchers at East China University of Science & Technology and Tongji University, the system innovatively combines solvent-based CO₂ capture for both atmospheric and point-source emissions with energy storage.

🚨A recent study shows that bottom trawling & dredging not only harm marine ecosystems but also reduce the ocean's capacity to sequester CO₂. By disturbing the seafloor, these activities release an extra 2-8MtCO₂/yr, threatening the progress of current #CDR efforts.🧵1/10 2/ The seafloor contributes to 40% of the ocean’s alkalinity, which plays a key role in the ocean’s capacity to sequester atmospheric CO₂. However, human activities like mobile bottom-contact fishing (e.g., trawling) and dredging are disturbing this natural carbon sink.

🚨🗓CDR REMINDERS!🗓🚨

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

🔗🗓️Link to the CDR Events Calendar:


#CDREvents #CDRJobs #Deadlines

🧵1/13 teamup.com/kshqbfhrqkw36s… EVENT—Scaling Enhanced Rock Weathering while Building Resilience for Farmers by Institute for Responsible Carbon Removal

🗓08 April 2025 | Online
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2/13eventbrite.com/e/scaling-enha…

📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (31 March - 06 April 2025):

🔗:

🧵0/21 Frontier signed $31.6M offtake with Hafslund Celsio to remove 100,000 tons of CO₂ (2029–2030)—via the first-ever carbon removal retrofit of a waste-to-energy plant at Celsio’s Oslo facility.

1/21
frontierclimate.com/writing/hafslu…

🚨 @UKRI_News & @NERCscience is investing £10 million in four NEW research projects, launching this month as part of a 5-year programme—Modelling Environmental Responses to Solar Radiation Management (#SRM)—to assess the risks, limitations & trade-offs of SRM.

DETAILS:🧵1/8 2/ Project 1: Holistic Risk Assessment of SRM

Led by @imperialcollege, @BristolUni, @UniversityLeeds & @UniofExeter

The team will develop a new framework combining Earth system modelling with social & political analysis to better assess risks & trade-offs of SRM—especially #SAI

🚨🌋 A new UCLA-led study reveals surprising findings about the 2022 Hunga Tonga—Hunga Haʻapai underwater volcanic eruption. Despite fears it would push global temps past 1.5°C, it actually cooled the Southern Hemisphere by 0.1°C!

Here's why:🧵1/8
#SolarGeoengineering #Aerosols 2/ When Hunga Tonga erupted in January 2022, scientists expected the massive release of water vapor to trigger warming, but a key factor shifted: The eruption produced smaller sulfate aerosols that unexpectedly cooled the atmosphere!

🚨🗓CDR REMINDERS!🗓🚨

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

🔗🗓️Link to the CDR Events Calendar:


#CDREvents #CDRJobs #Deadlines

🧵1/14 teamup.com/kshqbfhrqkw36s… EVENT—What's moving in 2025: Actionable insights for an effective carbon credit strategy by @SylveraCarbon

🗓01 April 2025 | Online
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2/14info.sylvera.com/webinar-whats-…

📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (24 March - 30 March 2025):

🔗:

🧵0/20 Stockholm Exergi announced its decision to build one of the world’s largest BECCS facilities, a $1.3B project set to remove ~800,000 tonnes of CO₂ annually and be operational by 2028.


1/20beccs.se/news/stockholm…

🚨How do political affiliations shape attitudes toward #SolarGeoengineering?🚨

A conjoint experiment with 2,123 US voters finds that partisanship outweighs message framing—meaning who delivers the message matters more than what the message says.

DETAILS🧵1/9 2/ The discourse on SG as a climate solution is evolving, but public perceptions—especially in the polarized US landscape—remain underexplored. This study () examines how different narratives & partisan sources influence attitudes.nature.com/articles/s4416…

🚨🗓CDR REMINDERS!🗓🚨

Here's a list of what's coming up this week (25 March - 31 March 2025) in the field of #CarbonDioxideRemoval:

🔗🗓️Link to the CDR Events Calendar:


#CDREvents #CDRJobs #Deadlines

🧵1/15teamup.com/kshqbfhrqkw36s… EVENT—Carbon Removal for Net Zero—From Science to Action by @gosupercritical

🗓25 March 2025 | London
🔗

2/15climate.gosupercritical.com/carbon-removal…

📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (17 March - 23 March 2025):

🔗:

🧵0/21 BlueShift company that aims to unlock sustainable, domestic critical mineral supplies while providing affordable ocean carbon removal exited stealth with $2.1M in pre-seed funding.

1/21
globenewswire.com/news-release/2…

🚨A breakthrough in carbon storage!🚨

Scientists at @NorthwesternU have developed a NEW carbon-negative building material using seawater, electricity & CO₂.

How does it work? And how much CO₂ can it store? Read on:🧵1/12 2/ This study expands on earlier research that focuses on storing CO2 in concrete [nature.com/articles/s4324…] & using electricity to treat seawater for cementing marine soils [nature.com/articles/s4324…].
Researchers are now injecting CO2 while applying electricity to seawater in lab.

🚨A new hope or a phantom menace?🚨

A global survey of 30,000+ people across 30 countries reveals how emotions—hope, fear, anger—shape perceptions of climate change & support for interventions like #CDR & #SRM.

Does hope drive action—or is fear the real motivator? Read on:🧵1/8 2/ To measure “climate emotions” globally, researchers (@ChadM_Baum, Elina Brutschin, Livia Fritz, @BenjaminSovaco1) from Aarhus University & IIASA surveyed adults in 19 languages from Aug–Dec 2022.

Here are some of the findings:

🚨🗓CDR REMINDERS!🗓🚨

Here's a list of what's coming up this week (18 March - 24 March 2025) in the field of #CarbonDioxideRemoval:

🔗🗓️Link to the CDR Events Calendar:


#CDREvents #CDRJobs #Deadlines

🧵1/13 teamup.com/kshqbfhrqkw36s… EVENT—This is CDR: Opensource MRV Protocols for CDR with OCP by @openaircollect

🗓18 March 2025 | Online
🔗

2/13lu.ma/b0e2yh9p

4/ Findings revealed that:

Under SAI, global temperatures would be lower than in the SSP2-4.5 climate change scenario.

This affects malaria transmission by shifting EIR toward lower intensity values—meaning fewer infectious mosquito bites.

*Cooler climate = lower EIR
5/ The length of the malaria transmission season (LTS) and overall malaria cases are also projected to decline under SAI compared to SSP2-4.5. This suggests SAI could mitigate some malaria risks associated with warming climates.