[palmer]

Keep in mind that WattsUpWithThat rarely censors alternative views, and Beck himself posts in the Under the Volcano thread I linked to. I don’t think there is a strong case for fluctuations above 300 ppm before preindustrial times. But there is a case for some fluctuation based on ocean temperature fluctuation and the Keeling curve may have some exaggerated smoothness. But I don’t think it is a strong enough case to explain the current 390 ppm and rising.

[allmost]

Do you understand that warmer liquid holds less gas? Do you understand that the estimated age of our Sun is over 4 billion years old. She might fluctuate a bit. I know that dissolved gasses release in warmer water. I've had it blow up in my face. :) You are still talking parts per million, and neglecting the Sun. You cannot be right.

Have you ever owned or had the pleasure to live around a greenhouse? The water vapor holds the heat.