Stefan F. Wirth4d ago

In biology/geology "#marinesnow" refers to the #organicdebris of organisms from higher #waterlevels. The #carboncycle thus transfers #CO2 to the #seabed, thus binding the #greenhousegas.
B. Borer et al. (2026) found that #microbial components of this "snow" induce #calciumcarbonate #dissolution in higher waters, reducing their #settlingvelocity and requiring consideration in future #climatemodels.
©#StefanFWirth

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https://doi.org/10.1073/pnas.2510025123
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Stefan F. WirthFeb 3

RE: https://mastodon.social/@sflorg/116003437911970681

This interesting #study is based on ancient lake #sediment #analyses from the #Bogotá #Basin. It proves that the existing #climatemodels about the #Pliocene were underestimated regardung tropical regions. This allows prognoses, according to which also the global warming of today may bring more heat in some #tropicalzones than expected.
See science communication article below.
© this text #StefanFWirth 2026

AI4PEXFeb 3

💡 New Paper!

New hybrid approach for cloud parameterizations in climate models 🌍☁️
Physically consistent ML (symbolic regression) + practical tuning improves ICON cloud biases by
⬇️ 75% (Southern Ocean)
⬇️ 44% (subtropical stratocumulus)
Interpretable, stable — and robust under +4 K warming.

👉 Learn more: https://www.nature.com/articles/s41598-025-29155-3

#ClimateModels #MLforClimate #Clouds #ESMs

💧🌏 Greg CocksJan 22
Analyzing Impact Of Heat From Western Wildfires On Air Pollution In The Eastern US
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https://www.linkedin.com/pulse/analyzing-impact-heat-from-western-wildfires-air-us-eisenstadt-fzk1e/ <-- shared LinkedIn technical article
--
https://doi.org/10.1126/science.ads1957 <-- shared paper
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https://doi.org/10.1126/science.aea7430 <-- shared technical article / perspective
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https://scitechdaily.com/see-how-californias-intense-wildfires-are-making-their-own-weather/ <-- shared technical article
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#fire #wildfire #climatemodels #heat #fireheat #release #atmosphere #convection #weather #weatherpatterns #airquality #publicsafety #risk #hazard #publichealth #USA #USWest #spatialanalysis #smoke #model #modeling #factors #pollution #emissions #updraught #particulates #downwind #regional #firemanagement #mitigation #extremeweather #cost #economics #damage #planning #policy #rainfall #pluvial
Paul Wermer, CC BY-NC-SA 4.0Jan 19

You know, the Climate Skeptics got it partly right. But they missed the fact that the situation is worse than predicted. The #ClimateModels haven't really understood the complex, interacting impacts of the #ClimateCrisis. They are worse and more diverse and happening faster than expected. For example:

Scientists warn of ‘regime shift’ as seaweed blooms expand worldwide
https://www.theguardian.com/environment/2026/jan/19/scientists-seaweed-blooms-expand-worldwide-ocean-pollution?CMP=Share_AndroidApp_Other

#Ecosystems #disruption

Scientists warn of ‘regime shift’ as seaweed blooms expand worldwide

Study links rapid growth of ocean macroalgae to global heating and nutrient pollution

The Guardian
Show threadStefan F. WirthDec 16
@sflorg interesting #research, according to which future #climatemodels in regard of #globalwarming should also take the effects on oceanic #storms into account, as -so the findings- a "#stormyocean can #absorb more #heat from the #atmosphere than in calm #weather".
Ruth MottramNov 10

RE: https://fediscience.org/@Ruth_Mottram/115524389043511540

🚨 new paper alert🚨
How to include freshwater fluxes from ice sheets in #ClimateModels - and kicking off the #FediWriMo #AcWriMo25 conversation...

(But also an excuse to try the new quote post functionality)

MPI für MeteorologieOct 29

🌍 We are glad to have hosted Abdou Aziz Coly, #PhD candidate from Université Gaston Berger, at #MPIM!

Through the @maxplanckgesellschaft ARTEMIS mentoring program, Abdou has been mentored by our scientist Romain Fiévet. They have been working together on tropical convection & #ClimateModels with locally refined grids. 🤝

This week, Abdou and Romain are attending the MPG-wide ARTEMIS #workshop in Heidelberg connecting with other #mentoring teams across the network. Great collaborations ahead!

Show threadanna_lillith 🇺🇦🌱🐖Oct 18

#Karoly , who was not involved in the #research said on a global scale the share of #CarbonDioxide absorbed by forests, trees, and plants had been quite stable over the past 20 to 30 years, which was assumed to continue under many #ClimateModels and policies.

But if similar shifts – from sink to source – were observed in other #rainforests, #ClimateProjections may underestimate #GlobalWarming in future. “Which is bad news,” he said.

6/9

Show threadanna_lillith 🇺🇦🌱🐖Oct 18

But if so, the findings could have significant implications for global #ClimateModels, carbon budgets and climate policies.

“This paper is the first time that this #TippingPoint of a switch from a #CarbonSink to a carbon source in tropical rainforests has been identified clearly – not just for one year but for 20 years,” said #ProfDavidKaroly , an emeritus professor at the #UniversityOfMelbourne and an expert in #ClimateChange science.

5/9