No it hasn't. It is the opposite.
Show me. If you noticed the articles I have written in the past on the subject this is not just a passing fancy with me. I was playing with this subject before there was an internet after I wasted a day of my life cleaning up a forrest park on the first Earth Day. I watched as we went from working to save the planet from the next ice age to saving the planet from global warming to seeing the nuts try to convince me that we will need to save the planet from the coming ice age. In each case man was the fault, fossil fuels are the fault man is bad. Please point out where man has done anything that caused the change from global cooling first reoprted in the New York Times in the 1800's and from there about every 25 to 30 years switches back to warming and cooling.
The graph you showed had to be corrected because they made a mistake and failed to correct it when they noticed the error until someone pointied it out to them. For the last ten years we have been told to fear Global Warming but in the last ten years the Earth has been cooling. The data for Global Warming is 20 years old, half way into their rant on global warming the Earth stopped getting hotter and started cooling. CO2 has been known for decades as a lagging indicator of warming and a precursor of cooling, yet the opposite is what has been touted by the media. I was shocked when Mr. Gore put it in his movie because it was so easily refuted and no one challenged him instead it was accepted, swallowed hook, line, sinker, the boat and half the water it displaced. The only reason i noticed the stupid errors is because astronomy and astrophysics are hobbies of mine. The crap of global warming did not ring true with what I knew of the Solar System and the planets which caused me to look into the Earth because if Global Warming was right then either everything we thought we knew about the solar system was wrong or the global warming nuts were wrong.
The global warming nuts pointed to Venus as an example of global warming, there are no hydrocarbons on Venus, no CO2 either. On Mars the atmosphere is almost all CO2 yet a blistering hot sunny day the temperature is around -74 degrees, there have been spikes where the temp got all the way up to Zero. Mars has shown significant warming in the 30 years we have had probes there, and significan ice melt has been documentted during the same period as our own warming trend. As I pointed out in one of my first articles on global warming that the Sun is expanding and getting about 10% hotter or because of the expansion the radiated energy reaches us warmer by about 10%. The global warming we experience on Earth also happenes to be occuring on Venus, Mars, and even as far as Pluto. To turn around and say that man is the cause flys in the face of this documented evidence.
None of the global warming studies take into account the Sun's expansion, the orbit of the Earth around the Sun or the Sun's orbit around the Galaxy, three factors that have been documented to cause dramatic climate change on the Earth. The theory goes that the Solar System got a big yank that caused the planets to go into a more elipitical orbit giving us shorter summers and longer winters. The orbit of the Earth as been documented to have been more elipical but we have yet to prove the other part of the theory of the big yank that caused it. Some say the Earth was hit by someting large enough to alter our orbit causing the ice age while others say it was the sun pulled along by some force we have yet to see because it is too far behind us. Since it takes 250 million years to make one orbit around the galaxy and man has only been on the planet a few thousand years and only documenting our orbit for the last 30 years there are a lot of unknowns.
The global warming documentaton has only been around a decade and is still a theory not a proven fact. So far the man made element of the global warming theory has holes in it large enough to slide the solar system through without touching the edges. It is because of this that I have doubts that man is the cause or even a contributing factor of our warming trend, or our cooling trend. I mean it only takes a million years for the heat and light from the Sun to reach the Earth. Okay a million years eight minutes and thirty seconds give or take a decade.
When man walked on the Moon the temp was +240 degrees in sunlight now the temp is +250 a ten degree increase in 39 years. Does anyone suggest that the SUV's (Space Utility Vehicles) caused the warming there? If the temp on the Moon is 250 and on the Earth the average temp is 74 I would say that we are still kind of cooler than we should be. the make up of our atmosphere is the reason for this, on Venus there are no significant nitrogen, oxygen to help regulate and moderate the temp. instead you have Sulfur Dioxide and what little hydrogen and oxygen are in water vapor causing it to rain sulfuic acid. The temp on Venus is 900 degrees.
Looking at the moon Triton which is almost all Ethane and Methane it is still so cold that it rains Propane. Yet we are told that those gases cause global warming. Triton is warmed by the Sun and by Saturn yet it is still a frozen wastelad, didn't any of the heat from the sun get trapped to warm it up? The same question for the planet Mars which is only 93 million miles away from us.