climate sensitivity

Synopsis of the CO2 problem

On what I believe is a private discussion site I was asked a number of questions about the climate problem. I'm copying my answers here (with some minor corrections of typos and for context) as they may be found helpful for others... or at least as a reminder to myself of what I know.

Q. 1 "I look forward to any insight you can provide into the real verifiable evidence of the human footprint."

A. 1
I'm not quite sure what you mean by "verifiable evidence". You acknowledge climate seems to be changing. There are two distinct pieces of knowledge that go into "blaming" it on us humans, each of which has been substantiated from multiple observations and physical understanding. These are:

(1) Humans have caused atmospheric CO2 levels to increase considerably over the past century. This youtube video shows the wide range of observations of that increase in considerable detail, also showing how it compares with past changes:
http://www.youtube.com/watch?v=H2mZyCblxS4

Peer review failures - another example?

I've discussed scientific peer review here before (one more - I really should get those category tags working!) but RealClimate's discussion of Lindzen and Choi (2009) highlights a particular example of recent peer review standards in sufficient

Syndicate content