Can this graph be accurate,...?

Question

where's global warming? http://www.fcpp.org/images/publications/Co2to600MillionYearsAgo600.jpg

Answer 1

Yes - There is no correlation between co2 and temperatures.

We know by analyzing air that's trapped in ice cores that the data is accurate.

Both Mars and Venus have 95% co2 levels, and their climates are completely different from each other.  The Earth only has trace amounts of co2.  The temperatures of these three planets is directly related to their distance from the Sun, not the amount of co2 they have.

Global warming is a political, not scientific argument.

Answer 2

of course it can be...

scientist have ways of getting air from the past such as the air trapped in amber and many other ways trust me

Answer 3

given the source "Frontier Centre for Public Policy"

yet another think tank

I would put little faith in it.

Answer 4

This one is:

http://www.metoffice.gov.uk/corporate/pr...

Unlike your link, it's based on actual ice-core samples of trapped CO2, so it's considered quite accurate.  And it puts things in perspective by showing that our current atmospheric CO2 level is higher than anytime in the last 430,000 years.

And this paper:

http://www.pnas.org/cgi/content/abstract...

shows how the rate of change in atmospheric CO2 is at least 10-times as fast as anytime in the past 20,000 years.

Obviously, we are indeed having an impact on the atmosphere.

Answer 5

Yes, hundreds of millions of years ago the planet was very warm and had much more CO2 than today. It was definitely not as hospitable of a planet as it is today. The problem with the graph you provided though is that it is on a VERY large timescale. Such a large timescale makes it harder to see the short-term variations of present years, and the slight warming trend witnessed over the last 100 years is virtually invisible.

Answer 6

Yes, it could be a fairly accurate estimate.  gas gets trapped in ice.  Of course most of our ice is rather young geologically speaking but we can, by taking a large number of samples and accurately mapping them as far as what time period the ice formed, we can determine an average parts per million of CO2 as well as other gasses.  Of course there is some debate as to whether the Geologic column as shown on the graph is accurate.  being that it is not always in the same order in every place on the earth.  What ever the case, it is obvious from many scientific perspectives that many times in the past have had a lot more CO2 in the atmosphere than we do now and that has not always coorelated with higher global temperatures.

Answer 7

its not accurate... not at all