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Still denying it?

Anyone who thinks that the steady rise in global temperatures since 1880 isn't a human creation is invited to watch episode 12 of Cosmos: A Spacetime Odyssey, which is available on Netflix streaming.

The case is rock fucking solid. There's less scientific consensus on the Big Bang than there is on human-caused global climate change.

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( 6 comments — Leave a comment )
kishiriadgr
Oct. 12th, 2014 11:41 pm (UTC)
I'll have a look at the episode. I'm not convinced, because there is so much archaeological evidence of cyclic warming/cooling. I've talked to tree ring specialists who contend that this is the case.
My observation is that we're in a warming trend that hits every 500 years before plunging us into another cold trend. That being said, the heating trend is worse because of human activity. We should not have mucked with the ozone layer.

All signs are that this winter is going to be brutally cold, though. The Dakotas are already covered in snow.

Edited at 2014-10-13 03:42 am (UTC)
ebenbrooks
Oct. 13th, 2014 11:54 am (UTC)
The rise in global temperatures spikes dramatically in 1880, and the temperature fluctuations track to within 80-90% of the amount of CO2 humans pump into the atmosphere.

Ah, frack, I could seriously go on for hours. Watch the episode. It says it a lot more clearly and understandably than I can.
kishiriadgr
Oct. 13th, 2014 07:56 pm (UTC)
The CO2 is definitely exacerbating the warming trend, which is something I don't deny. However, the temperature starting to rise in 1880 isn't really backed up by the history. There was a freeze during the later 19th century that is well-attested to. But while we can mitigate the warming trend, there is nothing we can do to stop it. It's not anthropogenic.
ebenbrooks
Oct. 13th, 2014 08:56 pm (UTC)
Okay, look ... just read this: http://en.wikipedia.org/wiki/Attribution_of_recent_climate_change#Attribution_of_20th_century_climate_change

What it boils down to is that, without human-generated CO2 in the air, the planet would currently be cooling. That is obviously not happening.
ebenbrooks
Oct. 13th, 2014 12:01 pm (UTC)
Okay, I'll say one more thing. When there's 98+% scientific consensus about something, with no official dissenting statements by any scientific organization of national or international standing, that seems like a pretty good indicator to me.

See http://en.wikipedia.org/wiki/Scientific_opinion_on_climate_change#Statements_by_scientific_organizations_of_national_or_international_standing
( 6 comments — Leave a comment )

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