What are the positions on Global Warming?

Climate Change is real but simply natural and cyclical.

Question: What are the positions on Global Warming?
Position‹2 of 3›: Climate Change Deniers
Argument1 of 3›: Climate Change is real but simply natural and cyclical.

Global warming might be real, but there's little we can do to counteract it because it's the product of natural causes.

The argument

The Earth naturally goes through geological cycles of heating and cooling. Global warming and climate change observed are simply a result of moving through this cycle. Though the earth is warming, it isn’t due to human activities, but natural weather patterns. Due to slight orbital changes leading to varying distance from the sun, the Earth has global heating periods and ice ages depending upon the warmth it receives from our star. We are currently in a heating period, and the climate variation we see has nothing to do with human activity. Scientists who believe human carbon emissions are causing climate change are incorrect in their assessment. Increased temperature changes the carbon equilibrium in the ocean, releasing more CO2 into the atmosphere, meaning warmer climate releases more carbon dioxide, not vice versa. Many climate scientists fail to take into account gaseous water in the atmosphere’s interplay with carbon dioxide, leading to improper calculations.

Premises

[P1]The Earth naturally cycles between warming and cooling periods due to orbital variations that change how much solar warmth it receives. [P2] The currently observed warming fits this natural cyclical pattern, and rising temperatures themselves release CO2 from the oceans rather than CO2 driving the warming. [P3] Mainstream climate scientists miscalculate human impact by neglecting factors like atmospheric water vapor's interplay with CO2. [C] Therefore, climate change is real but is a natural cyclical phenomenon, not the result of human activity.

Counter-arguments

Although Earth does experience natural heating and cooling trends, our planet’s current warming behavior is far more extreme than any past trends. It is past the point of naturally occurring heating, and can only be explained by human activity.

Rejecting the premises

[Rejecting P1] Orbital variation operates over tens of thousands of years and, taken alone, currently points towards very slow cooling. It cannot produce warming of this magnitude within roughly a century — and the observed pattern, with the upper atmosphere cooling while the surface warms, is the signature of greenhouse gases rather than of increased solar input. [Rejecting P2] The outgassing mechanism runs the wrong way here. The oceans have been absorbing carbon rather than releasing it, which is why seawater has measurably acidified, and the isotopic composition of the carbon added to the atmosphere matches fossil sources rather than oceanic ones. [Rejecting P3] Water vapour is not omitted from climate models. It is included as a feedback — warmer air holds more of it — and because it stays in the atmosphere only days, it amplifies a forcing rather than initiating one.