Geoengineering Info Profile picture
May 9, 2023 8 tweets 6 min read Read on X
🚨🌊NEW PAPER 🌊🚨

"One of the planet’s most vital #CarbonSinks i.e. SOUTHERN OCEAN (SO) (absorbs ~40% of C) is revealing its secrets as tiny organisms in the SO play an outsized role in moderating Earth’s #climate."

Details from the recent research are discussed in a🧵⬇️
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"Based on 107 independent observations of the seasonal cycle from 63 #biogeochemical profiling floats, new study conducted by scientists from #NOAA & University of Hawai'i provide the basin-scale estimate of distinct biogenic #CarbonPool production at Southern Ocean."
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Researchers find "significant meridional variability with enhanced #ParticulateOrganicCarbon production in the subantarctic & polar Antarctic sectors & enhanced #DissolvedOrganicCarbon production in the subtropical & sea-ice-dominated sectors."
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"#ParticulateInorganicCarbon production peaks between 47°S and 57°S near the “great calcite belt.” Relative to an abiotic Southern Ocean (SO), organic C production enhances CO2 uptake by 2.80 ± 0.28 Pg C y−1, while PIC production reduces CO2 uptake by 0.27 ± 0.21 Pg C y−1."
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"Without organic C production, the SO would be a CO2 source to the atm. The findings of this study emphasize the importance of #DOC & #PIC production, in addition to the well-recognized role of #POC production, in shaping the influence of C export on air–sea CO2 exchange."
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IN SIMPLE WORDS ⬇️
🌊 "Researchers discovered that if the amount of #carbon produced by tiny organisms in Southern Ocean decreased by 30%, the Southern Ocean would release carbon dioxide instead of #absorbing it, which could worsen the #GreenhouseEffect on our planet."
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Read the open-access paper entitled: "Biogenic carbon pool production maintains the Southern Ocean carbon sink" here ⬇️
pnas.org/doi/10.1073/pn…

#CarbonSink

7/8
Thread unrolled here ⬇️


Listen to the Al-powered mini-podcast on the paper entitled: "Biogenic carbon pool production maintains the Southern Ocean carbon sink" here ⬇️


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More from @geoengineering1

Oct 31
🚨🌲 New research reveals that even intact boreal forests, some of the planet’s strongest natural carbon sinks, lose their ability to absorb CO₂ as they age.

Here’s what the scientists found & why it matters for our climate models🧵1/9 #CarbonSink #CarbonRemoval Image
2/ Boreal forests cover vast regions across Canada, Russia, and Scandinavia and store enormous amounts of carbon in trees and soil.

They’re often seen as stable, long-term carbon sinks, but this study challenges that assumption with new global-scale data.
3/ Using seven global Net Ecosystem Productivity (NEP) datasets and a high-resolution forest age map, researchers tracked how C uptake changes as forests grow older.

They used a space-for-time substitution method, comparing forests of different ages to infer long-term trends. Image
Read 10 tweets
Oct 29
🚨A major 6-country survey (N=5,310) finds Europeans support -ve emissions to meet climate goals, but strongly prefer nature-based solutions like afforestation over engineered options like Direct Air Capture. Trust hinges on benefits for nature & future generations.

🧵1/10 #CDR Image
2/ When allocating how to tackle emissions, respondents clearly prioritized immediate mitigation:

• Renewables: 37.3%
• Behavior change: 24.0%
• Nuclear: 20.2%
• NETPs: 18.5%

➡️ This shows people support #CDR, but believe deep emissions cuts must come first. Image
3/ So which NETPs do they support most?

2 approaches were evaluated:
🌲Afforestation/Reforestation (AR)
🏭Direct Air Capture + Carbon Storage (DACCS)

AR scored +1.91 vs DACCS +0.64

➡️ This means people are 4.36× more likely to support forests as the favored way to remove CO₂. Image
Read 11 tweets
Oct 22
🚨A new study warns that efforts to cool the planet through stratospheric aerosol injection (#SAI) could face far greater challenges than models predict, from unpredictable monsoon shifts to material shortages & engineering limits, every step adds new risks.

🧵1/8 #SRM Image
2/ The authors explore both micro-level (engineering) and macro-level (governance & supply) factors that could restrict feasible deployment.

Key finding: these constraints could drastically raise costs, risks, and uncertainty, especially for “solid” (non-sulfate) aerosols.
3/ Traditional SAI uses sulfate aerosols (like volcanoes).

But alternatives, CaCO₃, TiO₂, Al₂O₃, ZrO₂, even diamond, promise less ozone damage.

Yet producing, aerosolizing, and dispersing these solids in submicron form is technically daunting. Image
Read 9 tweets
Oct 19
📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (13 October - 19 October 2025):

📺:

🧵1/25
Nordbex and Aker Solutions signed an MoU to develop Bio-CCUS plants across Europe.
mynewsdesk.com/se/nordbex-ab/…
Bain & Company has partnered with ZeroEx to scale up enhanced rock weathering projects.
qcintel.com/carbon/article…
Read 25 tweets
Oct 17
🚨Scientists built a device that captures carbon from the seawater and turns it into biodegradable plastic, using bacteria as a living bioreactor.

#CDR #mCDR #CarbonDioxideRemoval #Bioplastics

DETAILS🧵1/8 Image
2/ The system comprises 3 components:

1️⃣ C extraction

Traditional seawater electrolysis systems often fail within hours due to mineral buildup

To solve this, researchers designed a solid-state electrolysis unit that isolates sensitive ions using membranes & a solid electrolyte Image
3/ The modified design acidifies H2O, converting dissolved C (mainly bicarbonate & carbonate ions) into CO₂ gas for collection.

The prototype operated continuously for 22 days, processing 177 liters of seawater & extracting 6.54L of CO₂, with an energy use of 3 kWh/kg of CO₂.
Read 9 tweets
Oct 16
🚨French Academy of Sciences has released a new report on #SolarGeoengineering, stressing that the absolute priority must remain reducing GHG emissions via structural changes & accelerating adaptation to climate impacts.

On #SRM, the report offers several recommendations:🧵1/6 Image
2/ SRM Recommendation 1️⃣

Promote an international agreement aimed at prohibit any initiative, public or private, to deploy SRM, regardless of the framework or scale.

To do this, the entire scientific community will have to be involved.
3/ SRM Recommendation 2️⃣

Support & deepen research on climate, atmospheric physicochemical processes and biodiversity in order to be able to rigorously assess the potential & risks of SRM.
Read 7 tweets

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