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Comment: Re:Tired of Consensus = Fact (Score 1) 442

by cbiltcliffe (#49383521) Attached to: Experts: Aim of 2 Degrees Climate Goal Insufficient

Google is your friend. (Unless you're searching for drugs, bombs, or how to commit jihad, I suppose....)

The late Ordovician Period ice age is the one I'm referring to.

https://www.google.ca/search?q=ice+age+7000+ppm+co2&oq=ice+age+7000+ppm+co2&aqs=chrome..69i57.6084j0j8&sourceid=chrome&es_sm=93&ie=UTF-8

A choice quote from one of those links:

The highest concentrations of CO2 during all of the Paleozoic Era occurred during the Cambrian Period, nearly 7000 ppm -- about 18 times higher than today.
The Carboniferous Period and the Ordovician Period were the only geological periods during the Paleozoic Era when global temperatures were as low as they are today.
To the consternation of global warming proponents, the Late Ordovician Period was also an Ice Age while at the same time CO2 concentrations then were nearly 12 times higher than today -- 4400 ppm.

While it doesn't say this, and I'm going from memory here, so I could be mistaken, I believe the Ordovician ice age started with CO2 concentrations at about 7000 ppm, and they dropped to 4400 ppm during the course of the ice age. But even if it was only 4400 ppm, that's still 10 times what it is today.

Comment: Re:Only 1C (Score 1) 442

by cbiltcliffe (#49383465) Attached to: Experts: Aim of 2 Degrees Climate Goal Insufficient

http://www.sodahead.com/united-states/temperatures-were-warmer-than-today-for-most-of-the-past-10000-years/question-4723358/
Fifteen thousand years ago, temperatures rose 10 to 20 degrees in just one century.........

About 12,800 years ago we plunged into the Younger Dryas...... When we came out of the Younger Dryas, temperatures again
shot upward, rising 15 degrees in just 40 years.

The end of the Younger Dryas cold period warmed by 9F ( 5C) over 30-40 years and as much as 14F (8C) over 40 years.

http://www.climatedepot.com/2015/01/16/scientists-balk-at-hottest-year-claims-we-are-arguing-over-the-significance-of-hundredths-of-a-degree-the-pause-continues/
Climatologist Dr. Roger Pielke Sr., commenting on claims that 2014 was the warmest year on record: 'We have found a significant warm bias. Thus, the reported global average surface temperature anomaly is also too warm.'

Global climate changes have been far more intense (12 to 20 times as intense in some cases) than the global warming of the past century, and they took place in as little as 20–100 years.

Oh...sorry....you just wanted me to post a single already-posted graph. I guess I didn't follow your instructions properly, huh?

Comment: Re:What is the right temperature? (Score 1) 442

by cbiltcliffe (#49383325) Attached to: Experts: Aim of 2 Degrees Climate Goal Insufficient

Well, considering that most professors of geology and such state that various ice cores are quite good proxies for global temperatures, and that they correlate well with other indicators of global temperatures, such as glacier advances and retreats, then I'd say it relates quite well to global temperatures. After all, it's the experts that say that, not just me.

Comment: Re:What is the right temperature? (Score 1) 442

by cbiltcliffe (#49368189) Attached to: Experts: Aim of 2 Degrees Climate Goal Insufficient

The current rate of change is around 2 orders of magnitude greater than it was coming out of the last ice age.

I keep hearing AGWers saying that, but it's just not supported by evidence. The end of an ice age is marked by a global increase of 10-15 degrees in a matter of a few decades; maybe 100 years, tops. We're warming at no where near this rate, right now.
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