re: So NOAA and NASA are doctoring temperature data.

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go see my reply to him about water (high heat capacity) and landmass (low heat capacity) in response to his argument about sea ice and cap ice.

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Well it's obvious that water has a negative feedback effect on surface temperature due the thermodynamic properties of water, specifically its specific heat (aka, heat capacity). We can see this observation in humid temperate regions versus desert regions of the same latitude.

For example, Huntsville, AL has is the same latitude as Las Vegas but Las Vegas sees higher highs during the day and lower lows at night. And vise versa for Huntsville, AL. If water (in the vapor form in this case) provided a positive feedback we would should see higher highs in Huntsville, AL.

We see the opposite. Water (vapor in this example) provides a negative feedback. It cools.

But the GW research community defines water vapor as greenhouse gas and greenhouse gases are supposed to provide a positive feedback effect. That is, the more you have of it the higher the surface temperature. That's what they say about CO2.

But we observe the opposite.