Axel Kleidon

I leave X because Musk embraces and supports fascists. Fascists have never solved problems, they created them. They will certainly not lead us to a better future. Find me at better places. App deleted, account will remain silent. Good bye!

🇬🇧#joboffer for a #PhD student on improving soil carbon models. 📅Apply by March 23: bgc-jena.mpg.de/en/career/02-2… 🇩🇪#Stellenangbot für eine*n Doktorand*in zur Verbesserung von Boden-Kohlenstoffmodellen. 📅Bewerbung bis 23.3.: bgc-jena.mpg.de/karriere/02-20…

Neues Video: Beeinflussen Windturbinen das Klima? Nein, nicht wirklich. Selbst bei 200 GW in Deutschland entziehen sie nur 3% der Bewegungsenergie, die eh durch Reibung verloren geht. Und die zunehmende Trockenheit ist eindeutig die Erderwärmung. youtube.com/watch?v=HqMpTi…

Reminder: Don’t miss applying to the Indo-German workshop on "The Second Law in Earth System Science". Looking forward to being there with @akleidon @tejasvichauhan and @Ank_iitR.

Check out the blogpost about our recent @NatureComms paper with @akleidon @subimal_ghosh @yinglin_tian on extreme rainfall changes across continents. earthsystem.org/2025/01/03/new…

Neues Video: Was ist Entropie? Eine neue Diskussion von Harald Lesch und mir ist gerade auf youtube erschienen. Viel Spass und frohe Weihnachten! <youtu.be/5GHm7xAiP-c>. Alle Videos zum Kraftwerk Erde in dieser Playlist: <youtube.com/playlist?list=…>

@PhiuZ_de Ergänzend hier als Video auf youtube: <youtu.be/3rrZzA0yTI8?fe…>

Kann #Kernenergie zur #Energiewende beitragen? Axel Kleidon @akleidon und Harald Lesch zeigen bei @Phiuz_de: Sie wäre eine teure und gegen die zunehmende Trockenheit in Deutschland anfällige Lösung. pro-physik.de/nachrichten/ka… Kernkraftwerk Grohnde (Bild: B. Ludewig).

Our new paper is out in @NatureComms. We show that observed variations in extreme precipitation-temperature sensitivities across continents can be explained by differences in cloud radiative effects. Read more here: doi.org/10.1038/s41467…

Warum extremisiert sich der Wasserkreislauf im Klimawandel? Vortrag von der #LNDWJena bei uns am #MPIBGC jetzt auf youtube (youtu.be/g3-6cHAxcZ8). Oder beschrieben auf unserem Blog hier: <earthsystem.org/2024/07/14/ene…>

Neu auf youtube: Ändert der Ausbau der #Photovoltaik das #Klima in Deutschland? Nein, nicht bei dem Ausbau, der bis 2050 geplant ist. Videolink: <youtube.com/watch?v=7Ss91H…>. Blogpost: <bit.ly/4fYox2Y>

@russ_conser I think it is more of a direction than a principle. For technological evolution my favorite example is how we make light: from fire (candle) to heat (light bulb) to LED. It is a dramatic improvement of efficiency from how much you get (light) to how much you spent…

@akleidon Hard to believe evolution is stuck, but certainly impaired by us. Although new to physics of ecology, evolution of technology is my long bread & butter. IMO same evolutionary dynamics apply (remarkably so). "Does this tech raise our limits" could be good organizing principle?

Key insight in new @akleidon paper: "...life appears to evolve to minimise frictional losses and pushes the imposed transport constraints to higher levels...". IOW life lives at today's limits, but in so doing lives in a way to raise those limits by changing the environment.

@russ_conser I think it got stuck with ice ages, not much more to improve, perhaps. Except we humans invented photovoltaics, so we don‘t need the CO2 to transport the useful energy, but can do it with electricity. So I think a next look is at how technology evolved…

@akleidon I'm gonna have to reread up on seed evolution with this enhanced lens. Seems predictive of not only biomes, or even ecological succession of biomes, but with perhaps still deeper analysis, evolution itself? i.e. what next gymnosperm-like problems might nature solve?

@russ_conser Yes, great example! Also the step from gymnosperms to angiosperms were a big change with respect to distribution networks.

@akleidon And would it be correct to understand the evolution of C4 photosynthesis that enabled CO2 capture at low concentration while using less water as another example of something that raised the limits of work by and for life on Earth? royalsocietypublishing.org/doi/abs/10.109…

@russ_conser Great, that‘s very nice to hear!

@akleidon Thanks for another outstanding contribution. Reading your papers is like reading scientific scripture. Need to develop a chapter and verse reference scheme as the highlighting tool just isn't enough when each sentence could be a sermon!😉

New paper: The Second Law of #Thermodynamics, #Life and #Earth‘s Planetary Machinery Revisited. #Entropy and the second law of thermodynamics must apply to life and the Earth system as well, but how, and what can we learn from it? Check out our blog earthsystem.org/2024/11/09/lif…

Neues Video mit Harald #Lesch: Verbrennung ist ineffizient, Elektrifizierung und Quantentechnologien die Zukunft. Wer #Technologieoffenheit und #Verbrennung fordert ignoriert den 2. Hauptsatz. Die Physik lässt keine Zweifel, in welche Richtung es geht. <youtu.be/C1Dj-nlpaX0?fe…>

How do heatwaves differ in their mechanisms, and how do their impacts on ecosystems vary? @yinglin_tian addresses this in a new paper in @CommsEarth. Happy to have been part of this work alongside @akleidon @ZscheischlerJak @zhou_sha @xiangzLuo and others. nature.com/articles/s4324…

Gerade erschienen: Ein weiteres Video in der Reihe #KraftwerkErde zur planetaren #Thermodynamik des Erdsystems - also welche Prozesse #Entropie produzieren, und wie sich die Erde von anderen Planeten unterscheidet. youtube.com/watch?v=R8JCt8…