Your skepticism about the ice core data is correct. But, it was the ice core data that was nearly all the data in Al Gore's movie that did a lot to get the glo

Your skepticism about the ice core data is correct. But, it was the ice core data that was nearly all the data in Al Gore's movie that did a lot to get the global warming scare going. So, in a sense, just take that data, see the 800 year lag, and declare Gore's argument junk. I don't say that the alarmists are idiots -- I'd say that they are after money. Apparently Al Gore made a lot. So did Elon Musk (supposedly ballpark $5 billion in subsidies). And many others. The movie I linked to has one of the most credible guys, Lindzen, explaining how the money works. Al Gore started the money flow, and Maggie Thatcher had a role, too. I'm not going to check the ice core data for the points you mentioned. Presumably some people have done that. So, then, sure, maybe the original papers from the Russians at their Vostok station, etc. would be a place to look. If you do go look and do then take the ice core data at face value, and the 800 year lag, then return to my argument in my little post and drive a stake through the heart of the global warming alarmists. It's not about science. Instead it's about money and power. Without the issues of money and power, there would be no IPCC, Paris Accord, Kyoto whatever, subsidies for "renewable" energy, much of anything about solar cells, wind turbines, or carbon sequestration, and the whole subject would have less attention than worms 7 miles down in the Pacific. Since the real issues are money and power, no way am I going to check in detail the ice core data for questions at the level of detail you mentioned. The alarmists, seeking money and power, have suckered a lot of people, and for me to spend time checking all the details of the ice core data would be my getting suckered because it's about money and power, not science. In particular, the contention you see is due to money and power, not doubts about the data. That's all just part of the real world outside of good science. Net, what I wrote is ENOUGH for the science.