Geoengineering: cool the Earth against warming

[Christophe]

Youuuupi!!

Damn nature, the other freak was right!

[Christophe]

LOOOOOOOOOOOOOOOOL then this one *, I did not know it, it is good!

Researchers propose to manufacture, with fog boats, artificial clouds to cool the sea. We would thus calm the fury of hurricanes.

This article was published in December 2012 in Science & Vie Junior N ° 279.

The date: October 10, 2050. The location: somewhere in the middle of the Atlantic. On the horizon, hundreds of water jets shoot skyward. A herd of marine mammals? No, in fact of whales, they are a flotilla of unmanned "rotor boats" - kinds of aquatic drones propelled by the force of the wind alone. They suck up seawater and eject it into the sky at an altitude of several hundred meters. Their goal ? Calm the anger of the gigantic hurricane launched after them ...

We must act quickly: 20 million people are in danger! It is that a medium-sized cyclone, say within 500 km in diameter, produces devastating torrential rains and winds at 200 km / h capable of flattening houses like pancakes! Not to mention the seawater mountain 5 to 10 m high that it propels in front of it and which cleans you a paradisiacal beach of its sand as cleanly as a vacuum cleaner ... In short, in three or four days of fury, only one of these storms releases as much energy as humanity consumes each year!

(...)



* technology joke ...

[Christophe]

On the other hand, it is true:



But with planes it costs less ...

[Christophe]

The climate is saved !!!

The world's biggest carbon-removal plant switches on

Despite high prices, customers are lining up

https://www.economist.com/science-and-t ... n/21804774



Si it it is the largest in the world ... a few dozen wind turbines ... in synthetic images (???) ... We are sure we are saved!

Screenshot 2021-10-21 at 18-39-20 20210918_stp001 webp (WEBP image, 1000 × 563 pixels) .png (1.26 MiB) Viewed 571 times

SHORTLY AFTER 6pm on September 9th, the Orca carbon capture plant, just outside Reykjavik in Iceland, switched on its fans and began sucking carbon dioxide from the air. The sound was subtle — a bit like a gurgling stream. But the plant's creators hope it will mark a big shift in humanity's interaction with the climate.

[izentrop]

This is the largest in the world ... a few dozen wind turbines ... in synthetic images (???) ... We are sure we are saved!

Here is the other side

After two years of development, then one year of construction, the “Orca” CO2 capture plant of the Swiss company Climeworks has finally emerged. It was inaugurated on September 8, in Iceland. It is currently the largest CO2 capture plant in the world. “Orca” (an Icelandic word meaning “energy”) will take 4000 tonnes of CO2 directly from the air each year to turn them into stone.

The technology used was borrowed from nature. The latter indeed useschemical and physical processes that take place over thousands of years and convert carbon dioxide into stone. A method that "Orca" manages to reproduce in just two years!

How does it work? To put it simply, eight containers with large fans suck in the ambient air. The carbon dioxide particles are captured and then mixed with water - a process known as “Direct Air Capture”. This water is then injected into a deep layer (up to 1000 meters) of basalt rock.The CO2 then turns into calcium carbonate (limestone). Thanks to mineralization, the CO2 then petrifies forever.

With regard to global emissions, which are around 39 billion tonnes per year (2020), these 4000 tons seem almost ridiculous. However, “Orca” is just the start. "The next factory will already be ten times the size", explains Daniel Egger, Commercial Director of Climeworks. It will probably also be established in Iceland, because the subsoil is particularly suitable there.

«By 2050, we must be able to extract from the air between five and ten billion tonnes of CO2 per year (to achieve the objectives set in this area, editor's note), ”adds Daniel Egger. Such facility growth is ambitious, but achievable, he says. "However, to achieve this, the CO2 removal industry will need to grow by 60% annually." https://www.20min.ch/fr/story/une-insta ... 7001502631

[sicetaitsimple]

It is really nonsense ...... The last of the solutions to be adopted to try to stabilize the concentration of CO2 in the atmosphere.

[GuyGadeboisTheBack]

Ah good Kiki, and why?

[izentrop]

It is really nonsense ...... The last of the solutions to be adopted to try to stabilize the concentration of CO2 in the atmosphere.

The primary goal must be to cash in the subsidies and it must be an energy sink ... Do you have any data on that?

Edit: there is in the article

Since it will be impossible to avoid emissions in 30 years, it is crucial to remove them from the air in sufficient quantities by then and store them in the soil for the long term. “This is the only way to reach 'net zero', insists Daniel Egger. And to ensure the CO2 neutrality of the installation itself, the electricity comes from a regional geothermal power station ”.
And to ensure the CO2 neutrality of the installation itself, the electricity comes from a regional geothermal power station ”.

[Remundo]

no clear opinion on this

I would like to have the CO2 BALANCE of such installations ...

4000 tonnes of CO2 stored / year agreed.

but
1) energy consumed per year? what source?
2) embodied energy of the installations?

it's a complete LCA that we need.

already mentioned also: should be at the scale of the GIGAtonne of CO2, that is to say a million times more.

how to finance this?

[sen-no-sen]

And to think that there are still people who doubt that the fight against the RCA is not a gigantic business!

It would be interesting to know, on a theoretical basis, the floor space necessary to extract the excess industrial CO02 from our atmosphere. In the remedy category worse than the disease!
But we must admit that it is all the same much prettier than a forest!

PS: More seriously, it seems to me to be a beautiful subsidized vacuum cleaner and a magnificent "crystallizer" of fictitious liquidity, this is also the real role of all its "sea snakes" type technologies.