carbon cycle

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

Fossil carbon is the real problem

It looks like the US Senate plans to work on a new energy bill starting Earth Day (April 22). There's been a steady stream of updates from the likes of Climate Progress and Grist. The goal as usual is to produce something bipartisan - which means a lot of compromising on support for things like oil drilling and nuclear power and carbon capture and sequestration technology (CCS - aka "clean coal"). And the resulting bill will surely be thousands of pages that will be easy to attack for unfairness of some form or other.

Syndicate content