jbichsel:
Just one more comment to hopefully clear up my stance on this issue:
I do believe that global warming is occuring. I hope that point is clear and understood.
My contention comes at what or who is causing it to happen. I find it very difficult to believe that we can take 'data' that has been gathered over an extremely small period of time, geologically speaking, and assign an enormous amount of responsibility to human actions and activity.
I also find it ludicrous that many posters here and elsewhere use the information they cite as being irrefutable and entirely conclusive, yet information opposiing their views is suspect and flawed.
To my understanding, none of us has been around long enough, nor has enough scientific data been passed down from previous generations of scientists, to be able to claim with certainty that one or another 'theory' is absolute and without contestation. Claims to those points are absurd and mark the maker of such claims as lunatic.
1. the radiation reaching the earth's surface has decreased
2. the earth has warmed up.
3. QED, something in the Earth's atmosphere has changed to produce a more insulating atmosphere in the spectra that that Earth radiates at.
now up until this point you had better agree. to take a scuba diving analogy, if you are excerting yourself less and producing a little less heat, yet you are warmer (while in the same temperature of water), your insulation must have gotten better.
4. compared to past geological data the CO2 levels we currently have are enormous
find any geological data which shows a similar concentration of CO2 to that of what we have now, or find a similar rate of change (d CO2 / dt) in geological history (ignoring the timeperiods early in the Earth's history when we didn't have a significant biomass -- 4.5 billion years ago doesn't count).
5. ...and are clearly rising due to human activity.
unless you'd like to speculate on another source of levels of CO2 in the atmosphere. i'm pretty certain that if i did the research i could nail this one down as well.
6. CO2 is opaque in the infrared and acts as a greenhouse gas.
we know this from basic physics that has been known for 100 years. we also have confirmation that CO2 levels and global temperatures tend to move in synch.
7. The hypothesis is therefore that human activity is increasing the CO2 levels in the atmosphere which is causing a global warming effect.
so far nobody on the other side of the debate has gotten past "biased scientists". if you want to doubt this:
- find alternative evidence that the Earth is not warming
- find alternative evidence that CO2 is not building up in the atmosphere
- find alternative evidence that the buildup in CO2 is not due to human activity
- find any evidence from the geological record that the current CO2 levels and rate of change in CO2 and temperature are 'normal'
if you've got any of that, cough it up -- and please something more substantial than just "i don't believe the biased scientists, i'm sure we're not responsible". the scientists actually have data and there's no published research out there which contradicts the current "standard model" of global warming.
oh yeah, and stop trying to beat up on Al Gore's political motivations like it invalidates anything -- the scientists 100 years ago that explained the IR absoption spectra of CO2 were not working for the democratic party.
EDIT: okay dammit, that's my last post...
EDIT2: and you guys can't come up with a single climatologist that made a bundle off the stock market in the 90s and got out at the right time and now votes republican who has concrete evidence to support
any of your counter-claims? all of the climatologists really vote democrat?
EDIT3: okay, really, this is the last thing I have to say now. the last thing that has been bugging me is all the people who claim that global warming is just a "normal" geophysical process. this is semantically a poor argument because other examples of "normal" geophysical phenominon include: the K-T comet that took out the dinosaurs, the complete resurfacing of venus due to volcanic activity around a billion years ago, and the climate change caused by the supervolcano eruptions in yellowstone. the correct argument to make is one based on the actual harm caused by the temperature increase on the human condition and economy. and i guarantee you that if a james bond movie had a villian that was pointing a heat ray from the moon that would warm the earth up 10 degrees and melt the ice caps that james would be up there banging the bad guy's babes and blowing up the heat ray and we'd all be cheering him on. but raise it 10 degrees over the next century due to human activity in the aggregate then its just "normal" and we'll adapt to it...
EDIT4: okay, really, i'm going to go play oblivion now... i'm done with this thread...