02-07-2022, 04:59 PM
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#11 (permalink)
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I said possibly because there may be some way of teasing out a result from isotopes and such.
I entertain the possibility that there may have been permafrost thaws at the end of each ice age.
skepticalscience.com: We've been through climate changes before
Quote:
Humans have been through climate changes before- but mostly cold ones and mostly in our far distant past.
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Previous major global climate changes were glacial cycles that happened long before human civilization developed.
The human species evolved during the last 2.5 million years. Our far distant ancestors survived through multiple gradual cycles of cold ice ages, but did not experience any previous "hot ages."
We Homo sapiens in our current form appeared only about 200,000 years ago. So our species has survived two ice ages. In each ice age global temperatures were colder by 4 °C. The warmest period ever experienced by early humans was about 1 °C warmer (global average) than today. That period occured between the two most recent ice ages, 120,000 years ago (Eemian). Over the next 100,000 years temperatures gradually decreased into a new ice age. During that colder period humans began to expand out of Africa and across the globe. Ever since the Eemian much cooler temperatures have been the norm.
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02-07-2022, 05:16 PM
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#12 (permalink)
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perma
Quote:
Originally Posted by freebeard
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It's called 'permafrost' due to the fact that until recently it was permanently frozen.
I suppose 'relativifrost' could take it's place now. It will remain frost as a function of how warming accelerates.
We've been through climate change before, but never anthropogenically-driven climate change.
As I keep repeating, when you start a fire larger than a planet, and keep it burning from year to year, it should be no surprise when the planet turns around and bites you on the ---.
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02-08-2022, 12:44 AM
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#13 (permalink)
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The half life of methane in the atmosphere is only like 12 years. Seems like whole lot of nothing.
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02-08-2022, 01:23 AM
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#14 (permalink)
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And half of that methane comes from not feeding seaweed to cows. Allegedly.
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02-10-2022, 01:32 PM
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#15 (permalink)
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nothing
Quote:
Originally Posted by oil pan 4
The half life of methane in the atmosphere is only like 12 years. Seems like whole lot of nothing.
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Looks like you missed the memo:
While it remains for its lifetime, it's 21-times more powerful as a greenhouse gas, which amplifies global warming.
Which releases more methane.
Then, it turns into carbon dioxide which remains for a thousand years, which amplifies global warming.
Which releases even more methane.
In an endless positive feedback loop.
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02-10-2022, 01:36 PM
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#16 (permalink)
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cows
Quote:
Originally Posted by freebeard
And half of that methane comes from not feeding seaweed to cows. Allegedly.
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That's for a different thread.
The topic is permafrost.
( ruler- 'thwapp' across the knuckles )
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02-10-2022, 02:04 PM
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#17 (permalink)
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I guess I 'learned a hard lesson in a small Texas town'* about posting in a thread where you're the OP.
* Willie Nelson quote.
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02-10-2022, 03:32 PM
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#18 (permalink)
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Quote:
Originally Posted by aerohead
That's for a different thread.
The topic is permafrost.
( ruler- 'thwapp' across the knuckles )
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You went to Catholic school? Don't recall a single incident of this in public ditto, but was a constant recipient.
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02-10-2022, 03:55 PM
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#19 (permalink)
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Catholic school?
Quote:
Originally Posted by Piotrsko
You went to Catholic school? Don't recall a single incident of this in public ditto, but was a constant recipient.
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No, but many friends who did. Friend, Nick, M., childhood playmate of Carrie Fisher ( Princess Leia, Star Wars ) may have been the one to tell of the joys of Catholic school.
In the Los Angeles Public School District, Boy's Vice-Principals were authorized to administer swats to our back-sides. Our's had drilled holes in his paddle, ostensibly to reduce drag, and 'speed' the paddle to its target.
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02-10-2022, 03:57 PM
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#20 (permalink)
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Corporate imperialist
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Looks like a whole lot of wishful doomsday porn.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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