Just so to make sure you don't fall victim to Metal Brain's usual lies, here is what the consensus is among the vast majority of experts that are in a far more authoritative position than you and I to judge the true causes of global warming;
"...Authors of seven climate consensus studies — including Naomi Oreskes, Peter Doran, William Anderegg, Bart Verheggen, Ed Maibach, J. Stuart Carlton, and John Cook — co-authored a paper that should settle the expert climate consensus question once and for all. The two key conclusions from the paper are:
1) Depending on exactly how you measure the expert consensus, it’s somewhere between 90% and 100% that agree humans are responsible for climate change, with most of our studies finding 97% consensus among publishing climate scientists.
2) The greater the climate expertise among those surveyed, the higher the consensus on human-caused global warming.
Expert consensus is a powerful thing. People know we don’t have the time or capacity to learn about everything, and so we frequently defer to the conclusions of experts. It’s why we visit doctors when we’re ill. The same is true of climate change: most people defer to the expert consensus of climate scientists.
That’s why those who oppose taking action to curb climate change have engaged in a misinformation campaign to deny the existence of the expert consensus. They’ve been largely successful, as the public badly underestimate the expert consensus, in what we call the “consensus gap.” Only 16% of Americans realize that the consensus is above 90%.
Scientists need to back up their opinions with research and data that survive the peer-review process. A Skeptical Science peer-reviewed survey of all (over 12,000) peer-reviewed abstracts on the subject 'global climate change' and 'global warming' published between 1991 and 2011 (Cook et al. 2013) found that over 97% of the papers taking a position on the subject agreed with the consensus position that humans are causing global warming. In a second phase of the project, the scientist authors were emailed and rated over 2,000 of their own papers. Once again, over 97% of the papers taking a position on the cause of global warming agreed that humans are causing it.
In addition, and this is a point often missed my many, there is good evidence that much of the cooling of the stratosphere is caused by the man made CFCs (which, incidentally, is further evidence, if any were needed, that man can effect climate). However, no-where near all of it can be explained by CFCs and the remaining cooling can only be explained by CO2.
Here is what science has to say;
"...Just to pile on, here are some rather key specific observations beyond the rise in seasonally averaged global temperature that fit in well with an enhanced greenhouse effect (the relevant effect of increasing CO2 concentrations). These observations do not fit with other potential forcings.
Temperatures have risen more at night than during the day. This really defeats the notion of a solar powered climate change on its face.
The stratosphere is cooling. Models that predict the warming we are seeing also predict this particular feature of the current climate change.
An increasingly enhanced greenhouse effect should cause an energy imbalance between incoming sunlight and outgoing infrared radiation. This has been detected.
So to summarize: we know anthropogenic climate change is real because there is no other likely candidate cause, the CO2 rise is unquestionably the result of our activities, the particulars of the warming signature are consistent with an enhanced greenhouse effect and the whole phenomenon is entirely consistent with very long standing theories and expectations.
If it looks like a duck, and it quacks like a duck, why on earth would you think it is a galactic cosmic ray?..."
here is other evidence of warming: :
Satellite measurements show that the troposphere is warming
The stratosphere is cooling as predicted by anthropogenic global warming theory (this cannot be explained by solar variability)
Other causes cannot explain the amount of cooling in the stratosphere relative to the troposphere; ONLY the increase in CO2 explains it. Therefore, CO2 increase is the cause therefore man is the cause. And this is not even to mention that other causes cannot explain the amount of warning recently occurred in the biosphere as a whole including the oceans; only the increase in CO2 can explain it therefore man must be the cause.