Lightnews — Scholar-powered news

Leon Simons @leonsimons.bsky.social · 9h

There's no funding at the moment..

Leon Simons @leonsimons.bsky.social · 12h

Also see this new study:

'Emerging hemispheric asymmetry of Earth’s radiation'

Norman Loeb, Tyler Thorsen , Seiji Kato, @fredrosemn.bsky.social, Øivind Hodnebrog, and @gunnarmy.bsky.social

www.pnas.org/doi/10.1073/...

Emerging hemispheric asymmetry of Earth’s radiation | PNAS

Twenty-four years of satellite observations from the Clouds and the Earth’s Radiant Energy System show a northern hemisphere (NH) minus southern he...

www.pnas.org

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Leon Simons @leonsimons.bsky.social · 12h

Which is what we expect from a stronger Northern Hemisphere aerosol forcing and cloud feedback impacts.
5/

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Leon Simons @leonsimons.bsky.social · 12h

The Southern Hemisphere saw 'only' a 1.5 W/m² ASR increase and a 0.8 W/m² Net flux increase:
4/

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Leon Simons @leonsimons.bsky.social · 12h

The Northern Hemisphere showed an Absorbed Solar Radiation (ASR) increase of 2.2 W/m² in 20 years and Outgoing Longwave Radiation (OLR) couldn't keep up, leading to a net flux increase of about 1.1 W/m², averaged over 255,000,000,000,000 m²:
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Leon Simons @leonsimons.bsky.social · 12h

The Northern Hemisphere now has a positive energy imbalance (with space).

This likely contributes to accelerated AMOC slow down!

As less heat needs to be transported northward through the Atlantic Ocean when the interhemispheric energy imbalance decreases.
@ecmwf.int @carlobuontempo.bsky.social
2/

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Leon Simons @leonsimons.bsky.social · 12h

The most important data in the world comes from NASA satellites.

Here I plotted both hemispheres.

It shows that the Northern Hemisphere now absorbs more sunlight than the Southern Hemisphere and that both Hemispheres absorb more light than they radiate heat to space, leading to faster warming.
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Leon Simons @leonsimons.bsky.social · 14h

Life expectancy of ~35 was the average, which was mainly caused by children dying very young.

My great, great grandmother survived 14 of her children.

We vaccinate children because we want them to outlive us.

Anti-vaxers are killing children through gross negligence/ignorance

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Leon Simons @leonsimons.bsky.social · 15h

I think Trevor Noah did fine.

He asked the right questions and it was quite obvious he didn't buy the 100X cheaper BS.

He got Suleyman to give the more honest answer in the end.

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Reposted by Leon Simons

Aparna Nair @disabilitystor1.bsky.social · 17h

Why does the media allow these people to lie so brazenly?
I have yet to see a proper interrogation of their outsize ludicrous claims about gAI in real time, and there has never been a more urgent and pressing need for such journalism.

Leon Simons @leonsimons.bsky.social · 18h

This 'AI making energy 100 times cheaper' statement by Microsoft AI CEO Mustafa Suleyman to Trevor Noah on the What Now Podcast doesn't make any sense.

AI increases "energy" (electricity) demand, increasing electricity prices. Economics 101.

More:
youtu.be/-5TAAmXDBz8

AI making energy cheaper is bollocks

YouTube video by Leon Simons

youtu.be

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Leon Simons @leonsimons.bsky.social · 18h

This sums it up:

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Leon Simons @leonsimons.bsky.social · 18h

It's worse than you can imagine

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Leon Simons @leonsimons.bsky.social · 18h

In many ways, AI is the greatest scam ever..

It reminds me of the big short.

bsky.app/profile/leon...

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Leon Simons @leonsimons.bsky.social · 18h

It will/should mainly bring electricity to billions of people with limited access

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Leon Simons @leonsimons.bsky.social · 18h

Sorry, reposted because it didn't show the preview:

bsky.app/profile/leon...

Leon Simons @leonsimons.bsky.social · 18h

This 'AI making energy 100 times cheaper' statement by Microsoft AI CEO Mustafa Suleyman to Trevor Noah on the What Now Podcast doesn't make any sense.

AI increases "energy" (electricity) demand, increasing electricity prices. Economics 101.

More:
youtu.be/-5TAAmXDBz8

AI making energy cheaper is bollocks

YouTube video by Leon Simons

youtu.be

1 3

Leon Simons @leonsimons.bsky.social · 18h

This 'AI making energy 100 times cheaper' statement by Microsoft AI CEO Mustafa Suleyman to Trevor Noah on the What Now Podcast doesn't make any sense.

AI increases "energy" (electricity) demand, increasing electricity prices. Economics 101.

More:
youtu.be/-5TAAmXDBz8

AI making energy cheaper is bollocks

YouTube video by Leon Simons

youtu.be

6 16 54

Leon Simons @leonsimons.bsky.social · 19h

This 'AI making energy 100 times cheaper' statement by Microsoft AI CEO Mustafa Suleyman to Trevor Noah on the What Now Podcast doesn't make any sense.

AI increases "energy" (electricity) demand, increasing electricity prices. Economics 101.

More:
youtu.be/-5TAAmXDBz8

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Leon Simons @leonsimons.bsky.social · 20h

With a focus on the oceans, as that's where we (@drjamesehansen.bsky.social et al.) see the strongest impact of shipping desulphurization.
bsky.app/profile/leon...

Leon Simons @leonsimons.bsky.social · Jan 27

But it's crucial to take into account where the sulphur is emitted.

While the oceans "only" cover about 71% of Earth's surface, about 90% of global warming is ocean warming, while only 1-2% heats the atmosphere:

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Leon Simons @leonsimons.bsky.social · 20h

Note that I had to extend my Y-axis AGAIN..

Latitudes as reference to insightful @nature.com study by Helge Goessling, @trackow.bsky.social and @thomasjung.bsky.social:
bsky.app/profile/trac...

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Leon Simons @leonsimons.bsky.social · 20h

I just updated this NASA CERES graph. The regional level of Absorbed Solar Radiation increased by 4.2 W/m² in 20 years!!

That's more than the global greenhouse gas forcing increase since 1750!

The 2 W/m² Net Flux increase indicates that there is a lot more regional warming in the pipeline.

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Reposted by Leon Simons

Leon Simons @leonsimons.bsky.social · 1d

On the North Pacific:
www.patreon.com/posts/139393...

What the Hell is Going On in the North Pacific?! | Leon Simons

Get more from Leon Simons on Patreon

www.patreon.com

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Reposted by Leon Simons

marc konijn @marckonijn.bsky.social · 1d

niet zo gek, die 🔥🔥 van het oceaanwater ten oosten van 🇯🇵 en 🇨🇳 (en 🇰🇷)

deze zwaar geïndustrialiseerde landen zijn hun luchtvervuiling gaan aanpakken, en hebben daarmee een sterk verkoelende deken weggetrokken

(gebeurde bij ons begin jaren 80)

zie 🧵je Leon + 👇

marckonijn.nl/zonder-het-t...

‘Zonder het te beseffen trekken we de verkoelende deken van de aarde af’ – Marc Konijn

marckonijn.nl

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Leon Simons @leonsimons.bsky.social · 1d

On the North Pacific:
www.patreon.com/posts/139393...

What the Hell is Going On in the North Pacific?! | Leon Simons

Get more from Leon Simons on Patreon

www.patreon.com

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Leon Simons @leonsimons.bsky.social · 1d

We are all learning together.

www.patreon.com/posts/119009...

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Leon Simons @leonsimons.bsky.social · 1d

Completely unprecedented!

This is what happens when you increase the global greenhouse gas forcing by 4.1 W/m² while simultaneously cooling parts of the planet inhomogeneously in time and space and then largely mitigate cooling aerosols, while continuing with record high greenhouse gas emissions:

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