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

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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

Jun 6
🚨Earth has a mysterious triple symmetry that may influence its climate

New research finds that a circle running along the 27° east & 153° west meridians divides the globe into 2 halves with equal reflectivity & this may have implications for #SolarGeoengineering schemes.🧵1/10 Image
2/ This study matters bcz Earth's reflectivity (albedo) controls how much solar energy stays in the climate system.

For decades, researchers knew the NH & SHemispheres reflect similar amounts of sunlight. But nobody had seriously looked for similar patterns across longitude.
3/ Using 25 years of satellite observations, researchers discovered that the 27°E meridian uniquely splits Earth into eastern & western hemispheres with almost identical reflected sunlight. Not 20°E. Not 40°E. Just one remarkably precise divide. Image
Read 12 tweets
Jun 5
🚨Monthly Solar Geoengineering Updates (May'2026)🚨

From Stardust’s SAI particle reveal to US Congress oversight calls, @ARIA_research funding, @UNEP report, EPRS governance briefing & UK public support for SRM research, key SRM headlines from May:🧵0/12

…largeoengineeringupdates.substack.com/p/monthly-sola…Image
Top 10 SRM Updates from May 2026

1️⃣ Stardust reveals SRM particle design:

Company discloses 0.5µm amorphous silica–based particles & calcium carbonate core–shell variants, deployed at ~18km altitude, targeting up to ~1% solar reflection with monitoring & dispersal systems.

1/ Image
2️⃣ US Congress requests @NOAA geoengineering briefing:

Lawmakers seek oversight on MCB & SRM research, citing governance gaps & transparency concerns.

2/ Image
Read 14 tweets
May 29
🚨A new @EarthsFutureEiC study tests an Arctic intervention: flooding winter sea ice with seawater to see if it can become thicker, brighter, and more resistant to summer melt.

The answer comes from a real field experiment in the Canadian Arctic.🧵1/11 Image
2/ The experiment was conducted in Cambridge Bay, Nunavut (Canadian Arctic) using a ~1 km² sea-ice field site.

Researchers divided the ice into control plots (no flooding) and treated plots (artificial flooding) to directly compare outcomes under identical conditions. Image
3/Process:

•Seawater was pumped from ocean
•Spread manually/with equipment over ice surface during winter
•H2O rapidly froze due to sub-zero air temp
•Process repeated in some plots multiple times over winter

Each flooding cycle added new frozen layer on top of existing ice Image
Read 13 tweets
May 22
🚨What if rocks could trap CO₂ faster than nature ever does, at the atomic scale?

A recent study reveals how water can dramatically accelerate CO₂ mineralization on mineral surfaces, unlocking faster long-term #CarbonStorage.

Details🧵1/9 Image
2/ For decades, scientists assumed CO₂ turns into stable carbonate rock through a slow, two-step process:

CO₂ dissolves in water → minerals dissolve → carbonates slowly form.

This made geological storage reliable, but extremely slow.
3/ But real-world observations didn’t fully match this slow picture.

In some environments, carbonate minerals form surprisingly quickly, suggesting an alternative, faster reaction pathway might exist.
Read 11 tweets
May 14
🚨Greenhouses can grow food in extreme climates, but they often depend on fossil-derived CO₂ inputs to maximize crop yields.

New study investigates whether Direct Air Capture (#DAC) could replace those emissions-intensive CO₂ sources by capturing C directly from air.🧵1/13 Image
2/ Researchers modeled a 1-ha sealed high-tech greenhouse in Jeddah, Saudi Arabia producing cherry tomatoes & lettuce under hot-arid conditions.

The system maintained ~1000ppm CO₂ conc, which are required to sustain high crop productivity in climate-controlled desert agri. Image
3/ The study evaluated two adsorption-based DAC systems:
• temperature-vacuum swing adsorption (TVSA)
• moisture-swing adsorption (MSA)

Both were benchmarked against conventional trucked liquid CO₂ enrichment currently used in commercial greenhouse operations
Read 15 tweets
May 8
🚨Monthly Solar Geoengineering Updates (April'2026)🚨

From EU calls for an #SRM deployment moratorium & WHO-linked health-centered governance report, to Stardust publishing its own SRM rules, key SRM headlines you need to know from past month:
🔗

🧵0/12 …largeoengineeringupdates.substack.com/p/monthly-sola…Image
Top 10 SRM Updates from April 2026

1️⃣ Stardust releases SRM “guiding principles”:

The private SRM company publishes voluntary rules and safety guidelines, but experts raise concerns over transparency, unknown aerosols, and private control of planetary-scale interventions.

1/12 Image
2️⃣ WHO-linked report calls for health-centered SRM governance:

A pre-print urges SRM governance centred on human health, equity, and Global South inclusion, stressing SRM must never replace emissions cuts (“non-substitution” principle).

2/12 Image
Read 14 tweets

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