Climate Change Science [Strictly Moderated]

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Re: Climate Change Science [Strictly Moderated]

#1021  Postby Macdoc » Oct 07, 2021 7:02 pm

getting to monsoon level rain ...

https://edition.cnn.com/2021/10/06/weat ... index.html

But in Italy not Cairns.
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Re: Climate Change Science [Strictly Moderated]

#1022  Postby Macdoc » Oct 11, 2021 3:59 pm

some small win for the science community ....

Google prohibits ads that promote or make money from climate change denial

Ban applies to claims that climate change is a hoax, content that denies human activity contributes

The Associated Press · Posted: Oct 08, 2021 11:15 AM ET | Last Updated: October 9

A woman walks below a Google sign on the campus in Mountain View, Calif. On Thursday, the company announced it will restrict digital ads that promote false climate change claims, hoping to stop those making such claims from profiting from them and limit the spread of misinformation on its platform. (Jeff Chiu/The Associated Press)
Google is cracking down on digital ads that promote the idea that climate change is a hoax or make money from that kind of content, hoping to limit revenue for climate change deniers and stop the spread of misinformation on its platforms.

The company said in a blog post on Thursday, Oct. 7 that the new policy will also apply to YouTube, which last week announced a sweeping crackdown of vaccine misinformation.

more
https://www.cbc.ca/news/science/google- ... -1.6204593
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Re: Climate Change Science [Strictly Moderated]

#1023  Postby Macdoc » Oct 16, 2021 4:27 am

Earth is already becoming unlivable. Will governments act to stop this disaster from getting worse?


https://www.theguardian.com/environment ... maps-cop26
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Re: Climate Change Science [Strictly Moderated]

#1024  Postby Macdoc » Oct 16, 2021 2:08 pm

paper is behind a paywall...forgive the venue but a very interesting approach

A cheap and efficient way to directly convert industrial CO₂ offgas into oxygen and solid carbon
Saturday October 16, 2021 · 1:36 PM AEST


https://www.dailykos.com/stories/2021/1 ... lid-carbon
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Re: Climate Change Science [Strictly Moderated]

#1025  Postby Macdoc » Nov 02, 2021 5:51 am

Really good explanation of the role of increased water vapour on the impact of AGW.

Vapor Storms Are Threatening People and Property
More moisture in a warmer atmosphere is fueling intense hurricanes and flooding rains
By Jennifer A. Francis | Scientific American November 2021 Issue

https://www.scientificamerican.com/arti ... -property/
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Re: Climate Change Science [Strictly Moderated]

#1026  Postby felltoearth » Nov 02, 2021 12:07 pm

Macdoc wrote:paper is behind a paywall...forgive the venue but a very interesting approach

A cheap and efficient way to directly convert industrial CO₂ offgas into oxygen and solid carbon
Saturday October 16, 2021 · 1:36 PM AEST


https://www.dailykos.com/stories/2021/1 ... lid-carbon

Rough back of envelope calc. It would take Canada 1/3 of all its electrical production to offset its 2019 Carbon emissions. That is if all energy inputs are being captured here, which my spidey sense says no.


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Climate Change Science [Strictly Moderated]

#1027  Postby felltoearth » Nov 02, 2021 10:46 pm

felltoearth wrote:
Macdoc wrote:paper is behind a paywall...forgive the venue but a very interesting approach

A cheap and efficient way to directly convert industrial CO₂ offgas into oxygen and solid carbon
Saturday October 16, 2021 · 1:36 PM AEST


https://www.dailykos.com/stories/2021/1 ... lid-carbon

Rough back of envelope calc. It would take Canada 1/3 of all its electrical production to offset its 2019 Carbon emissions. That is if all energy inputs are being captured here, which my spidey sense says no.


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So I just asked a chemical process engineer friend what the energy output of a tonne of CO2 is

C+O2 --> CO2 yields 393 kJ/mol CO2 = 32 130 kWh per tonne of CO2 which is the minimum you'd need to put IN to reverse the reaction per the 1st law.

C and O2 have heats of formation of 0 at STP because they are elements. CO2 heat of formation is -393 kJ/mol. /44g per mol x 1000 g/kg ×1000 kg/T /1000 kJ/MJ / 0.28 kWh/MJ


I don’t know where they get the 230kWh figure from. They’re short about 32,000 kWh

Edit: Oops got it wrong 2411 kWh. They’re out by a factor of ten.


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Re: Climate Change Science [Strictly Moderated]

#1028  Postby Macdoc » Nov 05, 2021 6:56 am

Early work on climate earns a Nobel ...

https://www.realclimate.org/index.php/archives/2021/10/a-nobel-pursuit/

This blew me away.

Manabe extends this result to predict a temperature increase by 2000 of 0.8ºC based on a 25% increase in CO2, which was pretty close.

1970 !!!
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Re: Climate Change Science [Strictly Moderated]

#1029  Postby felltoearth » Nov 05, 2021 3:59 pm

felltoearth wrote:
felltoearth wrote:
Macdoc wrote:paper is behind a paywall...forgive the venue but a very interesting approach

A cheap and efficient way to directly convert industrial CO₂ offgas into oxygen and solid carbon
Saturday October 16, 2021 · 1:36 PM AEST


https://www.dailykos.com/stories/2021/1 ... lid-carbon

Rough back of envelope calc. It would take Canada 1/3 of all its electrical production to offset its 2019 Carbon emissions. That is if all energy inputs are being captured here, which my spidey sense says no.


Sent from my iPad using Tapatalk

So I just asked a chemical process engineer friend what the energy output of a tonne of CO2 is

C+O2 --> CO2 yields 393 kJ/mol CO2 = 32 130 kWh per tonne of CO2 which is the minimum you'd need to put IN to reverse the reaction per the 1st law.

C and O2 have heats of formation of 0 at STP because they are elements. CO2 heat of formation is -393 kJ/mol. /44g per mol x 1000 g/kg ×1000 kg/T /1000 kJ/MJ / 0.28 kWh/MJ


I don’t know where they get the 230kWh figure from. They’re short about 32,000 kWh

Edit: Oops got it wrong 2411 kWh. They’re out by a factor of ten.


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Final post on this.

My friend created a post on LinkedIn about this. Good read and the comments are enlightening.

Paul Martin on LinkedIn: A cheap and efficient way to directly convert industrial CO₂ offgas | 81 comments
https://www.linkedin.com/posts/paul-martin-195763b_a-cheap-and-efficient-way-to-directly-convert-activity-6861451772913950720-FTD9



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Re: Climate Change Science [Strictly Moderated]

#1030  Postby Macdoc » Dec 04, 2021 10:38 am

one of those million Manhattan Projects that reducing carbon requires...this is really neat...especially what comes out. https://edition.cnn.com/2021/12/01/euro ... index.html

forgive the title ....

snip
"When we add nitrogen from air to the slurry, it changes the environment to stop methanogenesis basically. So it drops the pH down to just below six and we're catching that early. So it stops the breakdown of those methane microbes that then release the gas to the air," Puttick said, adding their patented technology is the only one of its kind.
What comes out of the machine is an odorless brown liquid, called NEO -- a Nitrogen Enriched Organic fertilizer.
According to N2, their NEO has double the nitrogen content of regular nitrogen fertilizer; one of the most commonly used fertilizers to boost production of corn, canola and other crops.
Puttick said independent tests showed their technology reduces methane emissions from slurry by 99%. It also cuts by 95% the emission of ammonia; described by the EU as one of the main sources of health-damaging air pollution.
On a 200-cow dairy farm this equates to "a reduction of 199 tons of carbon equivalent every year with one machine," said Puttick, adding that they're now looking to scale out the technology across the UK livestock sector, and have recently installed it at a pig farm


costs about what a tractor does and likely subject to carbon rebates.
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