Plastic bags, climate change, renewable energy,

Haakon

just a slapper
I give up. Your comments are not based on science so no point arguing.
There are climate signals evident back as far as the 1930s in Australia. But examples of feedback loops that have already kicked off in earnest are methane releases from thawing permafrost in Alaska and Siberia, moraines in Greenland, and a whole bunch of others.

Stopping all CO2 now would not stop the runaway train.
 

shiny

Go-go-gadget-wrist-thingy
Wrong news lady, it has 274kwh capacity, it does not generate, it discharges. When the 274kw's are used, it is done.

On a grey day with no sunshine and no wind. The town will run on grid and the battery will charge off the grid.

We are installing a 250MW one-hour duration grid-scale battery at my place, possibly double size at 500MW. SA power networks have just installed and currently commissioning 4 Synchronous Condensers for grid stability.

Things are happening, I just need 8-9 years out of it :)
Nice. If we get charged to export to the grid will look into batteries but cost is definitely up there.
 

hifiandmtb

Sphincter beanie
There are climate signals evident back as far as the 1930s in Australia. But examples of feedback loops that have already kicked off in earnest are methane releases from thawing permafrost in Alaska and Siberia, moraines in Greenland, and a whole bunch of others.

Stopping all CO2 now would not stop the runaway train.
Where in science does it say that the methane leaking out NOW will cause irreversible climate change? Where does science state that we've lost control of the earth's temperature?

Keen to read these reports that state we've no longer got control over the situation, as it stands today.

Nothing referenced by the IPCC states that.
 

Haakon

just a slapper
Where in science does it say that the methane leaking out NOW will cause irreversible climate change? Where does science state that we've lost control of the earth's temperature?

Keen to read these reports that state we've no longer got control over the situation, as it stands today.

Nothing referenced by the IPCC states that.
Positive feedback loops.
 

hifiandmtb

Sphincter beanie
In the absence of you providing any information on tipping points, here's a link to the IPCC's view on long term outcomes:


Among many statements made:

There is little evidence in global climate models of a tipping point or critical threshold in the transition from a perennially ice-covered to a seasonally ice-free Arctic Ocean, beyond which further sea-ice loss is unstoppable and irreversible. {WGI 12.5.5}

There is low confidence in assessing the evolution of the Atlantic Meridional Overturning Circulation beyond the 21st century because of the limited number of analyses and equivocal results. However, a collapse beyond the 21st century for large sustained warming cannot be excluded.

A reduction in permafrost extent is virtually certain with continued rise in global temperatures. Current permafrost areas are projected to become a net emitter of carbon (CO2 and CH4) with a loss of 180 to 920 GtCO2 (50 to 250 GtC) under RCP8.5 over the 21st century (low confidence).
376163


At this stage, the outcomes are fairly prescriptive if we stick to a RCP2.6-like outcome.

The problem is, we are not currently choosing an RCP2.6 pathway - pledges & actions put us on a much more dangerous path.

For those who don't understand Representative Concentration Pathways, here's a more than decent place to start:

 
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Haakon

just a slapper
In the absence of you providing any information on tipping points, here's a link to the IPCC's view on long term outcomes:


Among many statements made:



View attachment 376163

At this stage, the outcomes are fairly prescriptive if we stick to a RCP2.6-like outcome.

The problem is, we are not currently choosing an RCP2.6 pathway - pledges & actions put us on a much more dangerous path.

For those who don't understand Representative Concentration Pathways, here's a more than decent place to start:

There is no 0.0 degrees profile. Hence the damage is done. Its just a matter of degrees and whether long term feedback loops already under way can be kept to a minimum.
 

Haakon

just a slapper
Blah blah blah from @Haakon
What is it you're trying to prove - that if we stop pumping out CO2-e the climate will be ok and revert to "normal"...? It isn't going to happen - either of them. The IPCC doesn't claim that either btw.

Arctic permafrost is already melting due to increased temperature releasing CH4 which is contributing to increased temperatures which is leading to permafrost melting which releases more ch4 which increases... you get the idea. Self reinforcing processes have already started.

Some of the really big "trigger points" may not have kicked in yet, but theyre coming. Gulf Stream will be a fun one, if enough fresh water from Greenland hits the North Atlantic it could turn off quite quickly...
 

hifiandmtb

Sphincter beanie

It was the spring of 2011, and I had managed to corner a very senior member of the Intergovernmental Panel on Climate Change (IPCC) during a coffee break at a workshop. The IPCC was established in 1988 as a response to increasing concern that the observed changes in the Earth’s climate are being largely caused by humans.



“Oh, I think we’re heading towards 3°C at least,” he said.

“Ah, yes, but heading towards,” I countered: “We won’t get to 3°C, will we?” (Because whatever you think of the 2°C threshold that separates “safe” from “dangerous” climate change, 3°C is well beyond what much of the world could bear.)

“Not so,” he replied.

That wasn’t his hedge, but his best assessment of where, after all the political, economic, and social wrangling we will end up.

“But what about the many millions of people directly threatened,” I went on. “Those living in low-lying nations, the farmers affected by abrupt changes in weather, kids exposed to new diseases?”

He gave a sigh, paused for a few seconds, and a sad, resigned smile crept over his face. He then simply said: “They will die.”
I see no evidence that humanity actually wants to resolve CC. None at all.

 

hifiandmtb

Sphincter beanie
There is no squeezing last drops - there is no change whatsoever to human behaviour:

https://phys.org/news/2021-06-norway-oil-future.html

"We will supply energy to the world as long as the demand exists," Petroleum and Energy Minister Tina Bru told a press conference.

"The government will therefore maintain an oil policy that facilitates profitable oil and gas production in the framework of the Norwegian climate policy and our climate goals," she said.

This week, Norway also opened new areas for oil exploration and production of petroleum, despite the IEA warning.
BAU ain't squeezing...

And:

https://phys.org/news/2021-06-climate-deep-decarbonization-plausible.html

"The authors concluded that, at the moment, neither high-emissions nor low-emissions scenarios are plausible: "Studies show that very high CO₂ emissions can produce tremendous economic costs. What's more: global coal reserves are finite, and clean energy is becoming more affordable. As such, governments and companies alike will be forced to change course,” "

"Our results imply that global surface warming of less than 1.7 degrees Celsius by the year 2100 is not plausible, but nor is a rise of more than 4.9 degrees."
Good luck kids, you can shit on our graves when we're gone.
 
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