What are some theories for and against global warming?

Question

What are some theories for and against global warming?

Answer 1

Read the AR4 report on reassessments. Some are supportive others promote uncertainty to a higher degree.

Answer 2

As far as theories go the Global Warming theory traps heat in the atmosphere which in turn warms the surface, so for the theory to be true the mid troposphere should warm at a faster rate than the surface, a quick look at the surface vs. the mid tropospherere indicates that the surface warmed faster.

The theory does not have any strong evidence to support it.

http://www.ncdc.noaa.gov/img/climate/res...

And temperatures over the last 8 years have dropped while CO2 has risen, I find it hard to believe that my beach house will be in trouble any time soon from rising sea levels.

http://icecap.us/images/uploads/MSUCRUvs...

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Answer 3

Global warming is caused by solar activity period. From the 1850s through 1940 we had a noticeable warming fueled by a spike in sunspots. The warmest year here was 1934, which was cooler than the average during the MWP. Then through the 40s and 50s it cooled a little bit as Co2 levels rose dramatically. It warmed slightly in the early 60s and then cooled again in the 70s bringing on the great Hansen’s first appearance on the world stage promoting Co2 as a global cooling gas that was going to drive the world into the next ice age and starve or kill most of the worlds population.

Then just as this was getting off the ground the sun spot activity jumped again and things started warming up again. So on the advice of Al Gore Mann and Hansen rewrote their whole scenario to match his alarmist book and altered the NASA temperature records to coincide with Co2 levels. This heating period ended in about 2000 with the hottest year of the cycle in 1998 well below the 1934 record year. Since then low solar activity has allowed cooling to set in and real scientists are watching carefully to see what direction temperatures are going to do. Recently Hansen, Gore and some of the other alarmists have admitted to 20 years or more of cooling before it starts warming again, but they at this point are guessing the same as anybody else!