No matter how hard you try, you cannot ignore the fact that relative to the ocean, the heat in the atmosphere is miniscule. The top few meters of the ocean store as much heat as Earth's entire atmosphere. It's the Atlantic ocean which triggers glacial periods in the NH. When the AMOC collapses a significant reduction in heat circulated by the Atlantic ocean from the equator to the north pole occurs. Enough so that it triggers a glacial event in the NH because the temperature threshold for extensive NH continental glaciation is only 2C colder than the present temperature.CO2 affects global temperature which most assuredly affects glaciation.
The questions were "what changes have taken place to the planet's commonplace configuration in the last 150 years and why would increased CO2 have had no effect and why wouldn't increasing temperatures increase the atmosphere's water vapor levels?" and you STILL have answered NONE of them.
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