Surface observations indicate that the planet warmed about 0.6 C in the 20th century, 0.8 C since 1850, and about 0.4 C since 1980. The fairly-rapid warming since 1980 has been cited in numerous scientific studies as being at least partially caused by human (anthropogenic) factors, of which the most significant is greenhouse gas emissions from energy production.
If CO2 is the reason for all this change, what explains the global cooling which occured in the 1930's and 1940's. It is lame to cherry-pick dates to try to portray some rapid warming caused by man. There is a lot more going on that we don't understand. A real scientist would tell you there is no way of knowing what is caused by natural variation and what if any is caused by man. Globull warming is all speculation and fear-mongering to promote world governance and wealth distribution.
Atmospheric observations don't, and 1850 is an arbirtary baseline anyway, let alone 1980.
What are the variance of normal mesoscale climatological fluctuations? No one knows.
The fairly-rapid warming since 1980 has been cited in numerous scientific studies as being at least partially caused by human (anthropogenic) factors, of which the most significant is greenhouse gas emissions from energy production.
There is grant money to be found by reaching poltically advantageous conclusions based on sketchy data.
We know even less about mesoscale solar weather patterns than we do about terrestrial systems. The Sun does not always burn with uniform intensity.
What is the effect of Earth's weakening magnetoshpere on our changing climate, if it's changing? No one knows.
What's the most prevalent greenhouse gas in the atmosphere, accounting for 70% of the total? Water vapor.
We don't "know" jack about human induced global warming, or if it exists at all.