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Look at the temperature chart for the last 10,000 years, the greenland core ice temperature, GISP2 for example, and you'll see a completely different picture.
by m3mpp 8y ago
Look at the temperature chart for the last 10,000 years, the greenland core ice temperature, GISP2 for example, and you'll see a completely different picture.
Everything looks extreme when looked at a very small scale...
- m3mpp 8y agohttps://www.heritagedaily.com/2018/07/doggerland-europes-lost-land/117925 https://www.heritagedaily.com/2018/07/doggerland-europes-los... Doggerland was submerged 5,000 BC because of water rising due to the ice cap melting...
- systoll 8y agohttp://hot-topic.co.nz/wp-content/uploads/2011/01/GISP210klarge.png http://hot-topic.co.nz/wp-content/uploads/2011/01/GISP210kla... Here’s the GISP2 data, plus samples from the past two centuries. Still seems pretty extreme to me.
- m3mpp 8y agoI think this one shows it even better: http://hot-topic.co.nz/wp-content/uploads/2011/01/GRIPtempBoxlarge.png http://hot-topic.co.nz/wp-content/uploads/2011/01/GRIPtempBo... And yes, there's a fast climb, but it's not the only instance in history, look at 800AD, 200AD, and a lot more in the past, it seems to be the way the temp fluctuates, very sharply. If we get back to the 10,000 years chart, do the last 150 years seems off the chart? If anything, it shows that we're cooler than the last 10,000 years.
- systoll 8y agoA graph that starts at 1840 doesn't show the past 10 000 years at all -- in the long view, that's all just a bunch of noise. What happened to the 'completely different picture' that the 10 000 year view held? Here's the 10 000 same graph with some colours https://i.imgur.com/GWhaGCU.png https://i.imgur.com/GWhaGCU.png Blue periods were colder than 2009. Yellow periods were warmer. The past 10 000 years were mostly colder than 2009, and we've only gotten warmer since then. And... precedent isn't the main issue here. Those large bumps have causes. This time, the cause is us. It's up to us [collectively] whether we want this. Maybe the Roman Period's ~-29.75C represents a better climate for humanity than the 1855 levels. That's right around that '2 degree limit' people talk about. If that's a target, it's about time to transition out of making 'as much CO2 possible as fast as possible'.