Environment: Content from Across the ABC


Date/Time 07 May 2015 11:15:13am
Your argument is like a burglar standing in court and saying "robberies happened before I was born therefore I could not possibly have done this one". Seriously - if you can't see the ass-backwards logic in that... Who's stupid and ignorant?

You are right - global climate has always changed. And previously those causes were obviously natural. This does not therefore mean that this warming period is natural. Climate change doesn't just happen by "nature" or magic. If there was a natural alternative explanation to the current patterns of warming (and stratospheric cooling!) that we are currently observing, we would be able to detect and measure it.

As it happens we ARE able to detect and measure CO2 absobtion in the atmosphere by analysing back radiation. Light energy is converted to heat. We can not only calculate how much energy but we can compare it with measurements done 40 years ago. What we observe is a clear increase in light energy converted to heat in the frequencies associated with atmospheric CO2. This is not debatable - it's empirical observation and basic physics.

If you think CO2 does not increase global heat, you first need to come up with some kind of explaination why it WOULDN"T.