> Big Bald Ron:
> Like the fact this is a normal cycle in the earth's temperatures.
Nope, as has been shown in this very thread.
> Like methane contributes to this as well.
So if we reduce our methane emissions, that will reduce global warming? I agree with that
> Like Atmospheric circulation bringing warmer air to the poles.
Uh, atmospheric circulation can't cause
global warming, unless you think that the earth is immune from the 1st law of thermodynamics.
> Like normal ocean currents bringing warmer water to the poles.
Ditto.
> Like clearing sulfuric aerosols from two large volcanic explosions(1982 and 1991) are allowing more direct sunlight into the atmosphere.
Aerosols disappear very quickly from the atmosphere. Mt. Pinatubo's were completely gone by 1994. Any effect on the global temp was a short blip.
> Like increased solar activity, which is known to have a direct impact on temperatures.
Except that solar activity has been declining (if anything) over the last 50 years, as was shown in this thread.
> Like differences in global orbits and the angle of tilt of the axis cause more direct sun to be shining on the planet, causing warmer temperatures.
Sure, and these changes in orbits occur over
tens of thousands of years. They can't possibly explain the sudden increase in temperature during the last 25 years.
> Like cutting down large wooded areas which contribute to warmer temperatures.
Yep
> Like water vapor in the atmosphere, which is responsible for trapping twice as much heat as CO2 emissions.
Sure, but water vapor's residence time in the atmosphere is very short, on the average of about 10 days. So it can't be a forcing. It is certainly a feedback, however. Whenever surface temperatures change, the water vapor adjusts very rapidly, maintaining a constant relative humidity. For example after the Mt. Pinatubo eruption, temps declined slightly for 3 years and the water vapor declined also in response.
> All of those factors, which with the exception of the loss of forests are 100% out of the hands of MAN, contribute to global warming.
Except for the ones that don't contribute
