It goes back to the time of Christ. It jumps around all over the place, the kind of global warming we're talking about wouldn't even be noticeable at that coarse a resolution. It doesn't matter what happened to the Vikings in Greenland or the vinyards of England, Those people had centuries to adjust to natural change. We don't. I'm interested in the last and next few decades and a specialized regional agriculture.

The rest of it I do not understand at all. What incriminating emails? What are you talking about? What we are interested in is the last centimeter on the extreme right of that graph, oh, and by the way, I do see all that colored sphagetti leaping upward after they started burning coal. The slope is near vertical and they appear to be in agreement. Even this data shows a degree C rise in the average in a century, making allowances for the coarse resolution. And although its hard to tell at this rez, that doesn't look like a linear increase. That may not be enough to melt the glaciers and the permafrost this weekend,
but its doing a number on the N polar icecap, and if it continues it means changes in rainfall patterns, ocean currents, growing seasons, it means famine and economic collapse and war. We don't need to flood Florida with polar melt, all we need is drought in the MidWest.

As for your paranoid delusions of mad scientists and greedy bureaucrats, I cannot possibly comment. If you are convinced that the scientific community and some government agencies are more likely to lie or even misinterpret data than the energy industry and the industial companies that would like to produce and consume as much energy as possible, preferably from the cheapest fossil fuels they can find, then there is nothing I can do to stop you. And if you think these academics and civil servants have the financial and propaganda resources of their noble opponents in free enterprise, then there is nothing I can say.

If your political obsessions color your scientific judgement and have to be consulted before you can evaluate a purely climatological problem, then I simply don't know how to reach you.

Greenhouse gases don't know what political system produced them, and the atmosphere and oceans don't care. And to be honest, neither do I.