Climate Change Science [Strictly Moderated]

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Re: Climate Change Science [Strictly Moderated]

#941  Postby felltoearth » Jul 14, 2019 5:34 pm

The beach side looks great. The land facing side looks like crap though.
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Re: Climate Change Science [Strictly Moderated]

#942  Postby Macdoc » Jul 15, 2019 11:25 pm

'This is unprecedented': Alert, Nunavut, is warmer than Victoria

It's the latest anomaly in what's been a long, hot summer across the Arctic

Image

A series of signs outside the military base in Alert, Nunavut, show the distance to various places around the world. Environment Canada says Canadian Forces Station Alert hit a record of 21 C on Sunday. (Mario De Ciccio/Radio-Canada )

Weather watchers are focused on the world's most northerly community, which is in the middle of a record-breaking heat wave.

"It's really quite spectacular," said David Phillips, Environment Canada's chief climatologist. "This is unprecedented."
Bob Weber · The Canadian Press · Posted: Jul 15, 2019 4:36 PM CT | Last Updated: 30 minutes ago

more

https://www.cbc.ca/news/canada/north/he ... -1.5212801
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Re: Climate Change Science [Strictly Moderated]

#943  Postby felltoearth » Jul 22, 2019 3:34 pm

Scientists Wrote a Eulogy for Iceland's First Glacier Lost to Climate Change
Iceland has lost its first glacier to rising temperatures. Now, scientists from Rice University and Iceland are planning to install a plaque near the sad pile of ice and snow formerly known as Ok Glacier. The researchers say it’s the first memorial to a disappearing glacier, but climate change ensures it almost certainly will not be the last.
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Re: Climate Change Science [Strictly Moderated]

#944  Postby Animavore » Jul 24, 2019 1:56 am

Huge swathes of the Arctic on fire, ‘unprecedented’ satellite images show

Earth’s boreal forests now burning at rate unseen in ‘at least 10,000 years’, scientists warn


https://www.independent.co.uk/environme ... IWFG3onOQ#
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Re: Climate Change Science [Strictly Moderated]

#945  Postby Macdoc » Jul 27, 2019 3:15 am

a well done and concise guide to debunking the few remaining climate denial zombies.

Have you got climate zombies? We debunk the myths that refuse to die

By environment reporter Nick Kilvert
Updated about an hour ago
First posted about 5 hours ago


https://www.abc.net.au/news/science/201 ... d/11291724
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Re: Climate Change Science [Strictly Moderated]

#946  Postby Animavore » Aug 10, 2019 2:17 pm

She has addressed world and U.N. leaders and has been nominated for the Nobel Peace Prize. Later this month, she'll sail across the Atlantic Ocean in a 60-foot yacht powered by solar panels and underwater turbines on her way to participate in the U.N. climate talks in New York (see related story).

But the success of Thunberg — who describes herself on Twitter as a "16 year old climate activist with Asperger" — remains a sore point for those who reject mainstream climate science and some who have helped shape or encourage the Trump's administration rollback of climate policy.

They frequently point to Thunberg's autism, claim she is used by her parents and compare her call to young people on climate change to "Hitler Youth." They have pointed to her "monotone voice" and framed her as a "millenarian weirdo" with the "look of apocalyptic dread in her eyes."

https://www.scientificamerican.com/arti ... IyaeIHimPg

She's getting to them.
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Re: Climate Change Science [Strictly Moderated]

#947  Postby Macdoc » Aug 19, 2019 12:09 pm

Not strictly on the science but rather the stifling still going on

Climate expert at CDC poised to file whistleblower complaint over treatment
By Maya Earls, E&E NewsAug. 14, 2019 , 10:50 AM
Originally published by E&E News

An expected whistleblower complaint is the latest escalation in a fight between the Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia, and its former head of climate work.

George Luber, who led the CDC’s Climate and Health Program, plans to file his complaint this week, E&E News has learned. It will allege that the agency retaliated against him for speaking out on climate change and will raise concerns that the CDC is shifting climate funds to other programs.


https://www.sciencemag.org/news/2019/08 ... -treatment
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Re: Climate Change Science [Strictly Moderated]

#948  Postby CdesignProponentsist » Aug 20, 2019 1:00 am

Iceland morns her first official glacier loss due to climate change.

grist.org wrote:Image

Here’s why Iceland is mourning a dead glacier

Some 100 people gathered at the top of a volcano in Iceland on Sunday for an unusual funeral. The victim: A 700-year-old, six-mile glacier. Cause of death: climate change.

The Okjokull glacier actually died a decade ago. But Iceland decided to hold the funeral for the deceased ice mass — it’s first to go extinct from rising temperatures — last weekend amid warnings from the scientific community that hundreds of other glaciers across the sub-Arctic country could soon disappear. Iceland is projected to be entirely glacier-free within 200 years.

Continues...
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Re: Climate Change Science [Strictly Moderated]

#949  Postby Macdoc » Aug 22, 2019 4:04 am

small steps with some momentum but long term it all helps

ENERGY
And Now the Really Big Coal Plants Begin to Close
Old, small plants were the early retirees, but several of the biggest U.S. coal burners—and CO2 emitters—will be shuttered by year’s end


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

#950  Postby chango369 » Aug 23, 2019 12:56 am

Project Vesta: Proposes using olivine to sequester CO2

https://projectvesta.org
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Re: Climate Change Science [Strictly Moderated]

#951  Postby Macdoc » Aug 23, 2019 1:36 am

:thumbup:
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Re: Climate Change Science [Strictly Moderated]

#952  Postby Animavore » Aug 23, 2019 10:18 am

Hmmm.
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Re: Climate Change Science [Strictly Moderated]

#953  Postby minininja » Aug 23, 2019 11:14 am

Yeah, we may have no choice but to use some industrial geoengineering techniques, but we can't rely on them being a solution. The consequences are unknown and could be catastrophic in their own ways. And the belief that it can all be solved with more industry just encourages governments to continue business as usual. Important to research these things, but not as important as forcing major political and economic change to reduce the causes of climate change.
[Disclaimer - if this is comes across like I think I know what I'm talking about, I want to make it clear that I don't. I'm just trying to get my thoughts down]
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Re: Climate Change Science [Strictly Moderated]

#954  Postby Macdoc » Aug 23, 2019 3:02 pm

Well olivine uptake is pretty well understood as the moderator ....we accelerate the CO2 emissions and accelerate the moderation mechanism.
Best form of large scale sequestration I've seen.
I don't see any odd biology consequences.
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Re: Climate Change Science [Strictly Moderated]

#955  Postby felltoearth » Aug 23, 2019 5:15 pm

It isn’t clear that it is all that the website purports it to be.

Olivine: The Environmentally "Green" Solution to Climate Change? | Geology for Investors
The use of olivine in carbon capture has not been well-studied, but it remains an emerging field of research.  Scientists are uncertain how practical this approach would be since the quantity of olivine needed to meaningfully sequester the CO2 emissions would be enormous.  In one study, it was estimated that it would take 5 gigatonnes of olivine on beaches to offset 30% of the current CO2 emissions for merely one year.  In theory, one kilogram of olivine sequesters an equal amount of CO2 but this has not taken into account the energy used to mine and distribute the olivine onto the beaches in the first place.
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Re: Climate Change Science [Strictly Moderated]

#956  Postby Cito di Pense » Aug 23, 2019 5:57 pm

minininja wrote:Yeah, we may have no choice but to use some industrial geoengineering techniques, but we can't rely on them being a solution. The consequences are unknown and could be catastrophic in their own ways. And the belief that it can all be solved with more industry just encourages governments to continue business as usual. Important to research these things, but not as important as forcing major political and economic change to reduce the causes of climate change.


And in what form would that political and economic change appear? Don't answer; at least, not in this thread. I thought this thread was about climate-change science.

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Re: Climate Change Science [Strictly Moderated]

#957  Postby romansh » Aug 23, 2019 6:29 pm

felltoearth wrote:It isn’t clear that it is all that the website purports it to be.

Olivine: The Environmentally "Green" Solution to Climate Change? | Geology for Investors
The use of olivine in carbon capture has not been well-studied, but it remains an emerging field of research.  Scientists are uncertain how practical this approach would be since the quantity of olivine needed to meaningfully sequester the CO2 emissions would be enormous.  In one study, it was estimated that it would take 5 gigatonnes of olivine on beaches to offset 30% of the current CO2 emissions for merely one year.  In theory, one kilogram of olivine sequesters an equal amount of CO2 but this has not taken into account the energy used to mine and distribute the olivine onto the beaches in the first place.


The mining industry has a lot of olivine by-products … the CO2 sequestration will be slow, difficult and there is not enough suitable waste rock. Crushing the rock to sub 100 µm does not make a lot of sense to me.
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Re: Climate Change Science [Strictly Moderated]

#958  Postby Macdoc » Aug 23, 2019 6:30 pm

The proposal is to let wave action do the grinding

He has proposed that coarse olivine grains should be spread onto beaches that experience heavy waves. The wave-action would tumble the olivine grains and break them down into smaller particles, thus further speeding up the weathering process naturally. Olivine beaches are a popular tourist attraction in Hawaii.


This is quite well thought through and unlike other geo-engineering is highly controllable.
https://projectvesta.org

Mining sand for beaches is a huge commercial enterprise anyways and immense amounts are needed for concrete.

ENVIRONMENT
June 23, 2018 8:00 am Updated: June 23, 2018 8:01 am
The world is running out of sand — there’s even a violent black market for it
By Katie Dangerfield
National Online Journalist, Breaking News Global News


https://r-login.wordpress.com/remote-lo ... rket%2F&h=

Decent detail in this paper

Olivine against climate change and ocean acidification
R.D.Schuiling1) and Tickell, O.2)
1) Olivine Foundation for the reduction of CO2. schuiling@geo.uu.nl
2) Oxford Climate Associates / Kyoto2. oliver.tickell@kyoto2.org Abstract
The weathering of calcium and magnesium silicates is the main natural mechanism limiting atmospheric CO2 levels. The weathering process transforms CO2 into bicarbonate, which washes down to the oceans where it ultimately precipitates as carbonate.
However weathering at its natural pace is unable to keep up with current and prospective anthropogenic CO2 production. Thus we propose to mitigate excess CO2 by increasing the rate of weathering: olivine, volcanic ash and similar silicate rocks should be mined, milled, and spread widely, mainly in the humid tropics where weathering rates are highest.
This may produce important additional benefits, reversing the acidification of soils, rivers and oceans, and enriching soils with mineral nutrients. Oceans would receive additional fluxes of orthosilicic acid, a limiting nutrient for marine diatoms: the consequent increase in diatom phytoproductivity could increase carbon fluxes to deep ocean, or support the production of biofuels in 'diatom farms'.
Carbon capture and storage (CCS) technology attached to power stations is currently being pursued as a solution to climate change. However CCS costs are estimated as $50-$100/t CO2, while there are fears as to the long term security of reservoirs. Using accelerated rock weathering, by contrast, CO2 could be securely and rapidly sequestered for about €10/t CO2, while bringing benefits to agriculture and forestry, and restoring ocean alkalinity.
With key countries including India, China, Brazil, Indonesia and Canada rich in exploitable olivine deposits, international acceptance of CO2 mitigation by accelerated weathering would advance the prospect of achieving an encompassing climate agreement.


http://www.innovationconcepts.eu/res/li ... ange23.pdf
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Re: Climate Change Science [Strictly Moderated]

#959  Postby Macdoc » Aug 23, 2019 6:46 pm

I don't see an issue with discussing the science of mitigating rising CO2 levels.
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Re: Climate Change Science [Strictly Moderated]

#960  Postby CdesignProponentsist » Aug 23, 2019 9:31 pm

Macdoc wrote:small steps with some momentum but long term it all helps

ENERGY
And Now the Really Big Coal Plants Begin to Close
Old, small plants were the early retirees, but several of the biggest U.S. coal burners—and CO2 emitters—will be shuttered by year’s end


https://www.scientificamerican.com/arti ... -to-close/


The sad part of this is that the workers will likely receive zero support from the government for finding new training and new work.
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