Sara Vicca

Beyond Inorganic C: Soil Organic C as a Key Pathway for Carbon Sequestration in Enhanced Weathering

🔗 buff.ly/u81eaGx

📢New @globalchangebio.bsky.social
#EnhancedWeathering alters soil organic carbon in complex ways.
Effects are mediated by biota & soil moisture.
Robust #CDR assessments require considering organic carbon.
@boitolucilla.bsky.social
@arthurvienne.bsky.social
onlinelibrary.wiley.com/doi/10.1111/...

Column | As Gaza starves, Israel’s far right sees a dream coming true Members of Israel’s government embrace the Trump-inspired vision of a Gaza of gleaming towers, ritzy tourism and pristine neighborhoods, but without Palestinians.

I normally post on climate science, which is my expertise.
But this is too important to look away, so I want to share this from the Washington Post. Please read.
www.washingtonpost.com/world/2025/0...

Beyond Inorganic C: Soil Organic C as a Key Pathway for Carbon Sequestration in Enhanced Weathering Enhanced weathering involves spreading crushed silicates on soils. Upon weathering of the applied silicates, CO2 is captured via two pathways: pedogenic carbonate formation and leaching of bicarbonat....

📢Just out
@globalchangebio.bsky.social: Soil organic carbon (SOC) is key for #enhancedweathering. We found negligible inorganic CO₂ removal, but considerable SOC storage potential. @boitolucilla.bsky.social @arthurvienne.bsky.social @patrickfrings.bsky.social
onlinelibrary.wiley.com/doi/10.1111/...

We see here a self-styled "honest broker" with decades of experience in downplaying climate change presenting an age-old climate denial trope: using *annual* rainfall data as argument against an increase in *extreme* rainfall.
Does he *really* not know better? Or assume his readers won't?
🧵1/5

Daily sea surface temperature anomaly (°C) on 30 June 2025 relative to the average for the 1991–2020 reference period highlighting a marine heatwave in the western Mediterranean Sea. The dashed box shows the domain used to compute the time series shown in the figure below. Data source: ERA5. Credit: C3S/ECMWF.

Daily sea surface temperature anomalies (°C) averaged over the western Mediterranean basin from 1979 to 30 June 2025. The year 2025 is highlighted in dark red and 2023 in light red. All other years are shown in grey. The western Mediterranean domain (1°W–15°E, 33–46°N) used to compute the time series is shown in the map above. Data source: ERA5. Credit: C3S/ECMWF.

Daily sea surface temperature anomalies (°C) averaged over the western Mediterranean basin from 1979 to 30 June 2025. The year 2025 is highlighted in dark red and 2023 in light red. All other years are shown in grey. The western Mediterranean domain (1°W–15°E, 33–46°N) used to compute the time series is shown in the map above. Data source: ERA5. Credit: C3S/ECMWF.

Heatwaves in June 2025 were intensified by record breaking Mediterranean temperatures more than 5°C above average

Impacts of marine #heatwaves:
🪸🐠 heat stress in marine ecosystems
🌊 📉 reduce oxygen levels effecting ocean industries
🥵 Increase humidity, ⬆️ heat stress for people
➕many more

The Global Tipping Points Conference 2025. Credit: Jim Wileman / University of Exeter

NEW – Tipping points: Window to avoid irreversible climate impacts is ‘rapidly closing’ | @ceciliakeating.carbonbrief.org @rtmcswee.carbonbrief.org @ayeshatandon.carbonbrief.org @gsiexeter.bsky.social @pik-potsdam.bsky.social

Read here: buff.ly/ECWvN3z

Tipping points: Window to avoid irreversible climate impacts is 'rapidly closing' - Carbon Brief In the midst of a record-breaking heatwave in Europe, the UK city of Exeter recently...

Here is a great summary of the #GlobalTippingPoints Conference 2025 in Exeter by @carbonbrief.org: www.carbonbrief.org/tipping-poin...
The conference was a call for action as we head towards #COP30 at which the 2nd updated Global Tipping Points Report will be launched

Ours is the first study to demonstrate an historical increase (by a factor of three!) in the occurrence of atmospheric resonance, which is associated with many of the most devastating and deadly persistent summer weather extremes in recent years (e.g. Pacific Northwest Heat Dome of summer '21) 🧵

What a 90% emissions cut could mean for EU citizens A web of policy signals, investment choices, and support measures will ultimately determine the final cost for households and industry.

What a 90% emissions cut could mean for EU citizens

The great acceleration debate Why the consilience of evidence points toward acceleration

Is global warming accelerating? Over at The Climate Brink I argue that the consilience of evidence from surface temperatures, climate models, forcing changes, ocean heat content, and earth energy imbalance all point toward yes: www.theclimatebrink....

Reviews and syntheses: Carbon vs. cation based MRV of Enhanced Rock Weathering and the issue of soil organic carbon Abstract. We discuss the “monitoring, reporting & verification” (MRV) strategy of Enhanced Weathering (EW) based on carbon accounting and argue that in open systems such as arable land, this approach ...

Current #MRV for #EnhancedWeathering focuses on bicarbonate export, but this may not capture total #CarbonRemoval, especially when soil retention is high.

We propose a cation-based MRV using solid soil samples as a more practical & reliable alternative.

egusphere.copernicus.org/preprints/20...

⚠️Global warming caused by humans is advancing at 0.27°C per decade – the highest rate since records began.

This is one of the indicators updated every year by over 60 international scientists in the annual Indicators of Global Climate Change report – published today. doi.org/10.5194/essd... /1

Check out the updated interactive climate dashboard to track the metrics in our new Indicators of Global Climate Change 2024 report: climatechangetracker...

Effects of basalt, concrete fines, and steel slag on maize growth and toxic trace element accumulation in an enhanced weathering experiment Abstract. Terrestrial enhanced silicate weathering is a CO2 removal technology involving the application of ground silicate materials to agricultural soils. Next to its CO2 removal potential, it can i...

📢Just out - Effects of basalt, concrete fines, and steel slag on maize growth and toxic trace element accumulation in an enhanced weathering experiment.
We found limited risk of toxic trace element contamination after a one-time application, even for the steel slag.
bg.copernicus.org/articles/22/...

Global emergence of unprecedented lifetime exposure to climate extremes - Nature Climate models, impact models and demographic data are used to estimate the number of people projected to experience unprecedented lifetime exposure to extreme climate events across multiple dimension...

From @nature.com: New research shows that with every increment of global warming, the number of people facing unprecedented lifetime exposure to crop failures, droughts, floods, wildfires, and cyclones increases sharply. www.nature.com/articles/s41...

Wereld ligt op koers om dit jaar weer boven de 1,5 graad opwarming te eindigen De opwarming van de aarde koerst ook dit jaar af op meer dan de 1,5 graad opwarming die de internationale gemeenschap in 2015 als klimaatdoel heeft gesteld. Een verontrustende, nieuwe berekening wijst...

Data analysis suggests an acceleration of warming.
www.demorgen.be/nieuws/werel...

🇨🇳 Key developments from China:

📉 China’s CO2 emissions fell due to clean energy, for the first time.
🌾 High temperatures and low rainfall in central China threatened wheat output.
⚡ Xi touted “clean energy” cooperation with Latin America and the Caribbean.

‘Significant’ risk of Amazon forest dieback if global warming overshoots 1.5C - Carbon Brief Even passing 1.5C of global warming temporarily would trigger a “significant” risk of Amazon forest “dieback”, says a new study.

NEW – ‘Significant’ risk of Amazon forest dieback if global warming overshoots 1.5C | @ayeshatandon.carbonbrief.org w/ comment from @gergmunday.bsky.social Nico Wunderling @davidamckay.bsky.social David Lapola @chrisd-jones.bsky.social

Children drink water from a pipeline in the village of Afraaga, Somaliland. Credit: Joe Giddens / Alamy Stock Photo

NEW – Children born in 2020 will face ‘unprecedented exposure’ to climate extremes | @AyeshaTandon w/ comment from Luke Grant, Kaveh Madani, @harrinluke.bsky.social @marinaromanello.bsky.social

Read here: buff.ly/Qxw80Un

Global emergence of unprecedented lifetime exposure to climate extremes - Nature Climate models, impact models and demographic data are used to estimate the number of people projected to experience unprecedented lifetime exposure to extreme climate events across multiple dimension...

📢 Hot off the press: our new study in Nature, led by Luke Grant and @wimthiery.bsky.social, shows how climate change is redefining what it means to live an "unprecedented life"—facing climate extremes that would have been nearly impossible without human influence.

www.nature.com/articles/s41...

Updated fossil CO2 emission estimates from @robbieandrew.bsky.social

Based on the latest data, we estimate fossil CO2 emissions went up 0.9% in 2024.

Listen to his presentation here (starting about 8:55): cicero.oslo.no/no/arrangeme...

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Just released: Huge revision in Germany's official estimates of emissions/uptake from the land-use, land-use change and forestry (LULUCF) sector, now reflecting the spruce bark beetle outbreaks that started in 2018. 1/2

Spende für Help for my sister – Hope against bile duct cancer., organisiert von Andreas Loescher My dear sister (42 years old) has been diagnosed with bile du… Andreas Loescher braucht deine Unterstützung für Help for my sister – Hope against bile duct cancer.

Please consider helping our dear colleague, Carolin Löscher, a marine geomicrobiologist, in urgent need (no spam!). Tina

gofund.me/7c18c4c1

Chart | Proposals for new coal plants have been drastically scaled back in some of the most coal-reliant countries over the past decade: Change in proposed coal power capacity (announced, pre-permit and permitted) from 2015 to 2024, gigawatts (GW), in all countries that saw declines over this period. Red arrows indicate countries that no longer have any plans to build coal power plants. Source: Global Energy Monitor.

NEW – Analysis: Nearly 60 countries have ‘dramatically’ cut plans to build coal plants since 2015 | @joshgabbatiss.bsky.social @globalenergymon.bsky.social

Read here: buff.ly/ndBmRxQ

Could Trump's tariffs slow emissions? Sure, experts say, but at great cost overall President Donald Trump’s sweeping global tariffs could cause planet-warming greenhouse gas emissions to drop temporarily, but that won’t help the climate long-term

“Any emissions reduction would be temporary," said Dan Jasper, senior policy advisor at Project Drawdown. “I'm deeply skeptical that this would have positive impacts on climate change and in particular the energy transition.” www.wftv.com/news/could-t...

The impacts of climate activism We review 50 studies on the impacts of climate activism. We present the existing evidence in a map of what we know about climate activism and its impa…

A really cool new study on the impact of climate activism has just dropped! Some highlights:

1) "There is strong evidence that climate activism shifts public opinion and media coverage in a pro-climate direction, but this varies by context and the tactics employed."

Preliminary data suggests that the global average increase in atmospheric CO2 concentration in 2024 will be a record.

Not just a little record, but 25% higher than the previous record.

(This is the global average, as opposed to Moana Loa)

gml.noaa.gov/ccgg/trends/...

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Universities must lead capacity building in carbon dioxide removal Nature Reviews Clean Technology - The commercial carbon dioxide removal ecosystem is growing rapidly, but the supporting talent pipeline remains underdeveloped. Universities will have a key role in...

Universities must lead capacity building in carbon dioxide removal 🧪

Carbon removal is the next big fossil fuel boom, oil company says Occidental wants to use climate tech to boost oil and gas production.

So a fossil fuel company that bought a CO₂ removal (CDR) startup for $1.1 billion plans to use the CO₂ captured from the atmosphere to get more oil out of the ground. It's…not great at all.