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lol
The answer is yes, do to the fact that warmer air conducts light better.
Yes. Global warming will affect the earth's rotation on its axis, revolution around the sun and alter the angle of the earth's axis in relationship to the sun.
Semi-serious answer. Due to refraction effects the precise time of sunrise/sunset depends upon atmospheric conditions including water content, temperature profile, and layer levels and probably other parameters that constitute daily and seasonal weather. Because of this observed sunrise/sunset time vs astronomical predictions has an uncertainty on the order of at least a few seconds. Since global warming is expected to impact these parameters it probably does have some quantifiable effect however miniscule it might be.
Yes, it will.
You can already see the effects when your Garmin calculates distance on the treadmill.