The graph above is known as “HadCET,” or the Central England temperature record, from 1659 to present, monthly in the beginning, daily from the late 1700s forward. When I last put up graphs using Greenland ice cores (link), it was pointed out to me that those ice cores are mere “proxies,” that is, we cannot know the actual temperatures of previous times and thus have to search for other indicators. I think that the implication was that the ice cores, which measure a shift of oxygen isotopes, for that reason are trash.
(Note on HadCET the rise of temperature from 1900-1950, before we began putting large quantities of CO2 in the atmosphere. What caused that? The warmest decade in the lower 48 during the 20th century was the 1930s, easily. What caused that? (No one knows.))*
I don’t get that proxies are trash, that is, they are data, and that data is meaningless by itself and has to corroborate or contradict other data. In fact, the ice cores do corroborate historical records of Vikings farming Greenland and a long period (1250-1850) known as the Little Ice Age. Another commenter then informed me that there were no Vikings, another hoax. I had to wonder then, when it was named “Greenland”, if these damned illusory hoaxing Vikings were into irony.
Aye, Carumba. Now I am being targeted for things I am not certain about, cannot know, such as the reliability of the existence of nuclear bombs and radiocarbon data. It is hard for the non-scientist to evaluate the validity of things. It’s not just this or that, but a whole spectrum or this’s and that’s as complied by our brains and sifted by our own judgment. It is always subject to newer and better this’s and that’s. We have to avoid gurus and over-reliance on authority figures. Why is it so hard to admit that we do not know?
HadCET above is based on a proxy, thermometers. I can go out, as I did yesterday, and hike at various altitudes and judge the feel of the air to be colder or warmer on my skin, and guess at the temperature. But one of the easiest and best ways we have had over the centuries is mercury in a vacuum, measuring its rise and fall and coordinating it and scaling it to known phenomenon, such as the freezing and boiling point of water at sea level. Though just a proxy (even if done in real time), it seems to work.
HadCET came from the East Anglia Institute, a prestigious climate study center founded by Hugo Lamb. EAI is now a prostitute to the climate alarm crowd, disgraced. Michael Mann, as exposed in Climategate, not only dismissed but ridiculed Hugo Lamb as “out to lunch.” It is not hard to ascertain that Mann is a tool, and that the climate change hoax is much larger than him or his “closeted” friends. His word.
So I offer again below, in differing format, the Greenland ice core data with the understanding that it is but a proxy. To my knowledge, the people who spent thousands of laborious hours accumulating and interpreting the data … are not tools. One of Mann’s stated objectives with his Hockey Stick was to eliminate the Medieval Warm Period. HadCET claims it happened, right before the Little Ice Age, as shown below.
I have noted before that the peaks of the Minoan, Roman, Medieval and Modern warm periods are showing a downward trend. I think that might be what the arc on this graph is pointing at, that our current interglacial period is soon coming to an end. That is a projection of a trend, however, and not reality.
* Climate alarmists have been busy reconstructing the past, adjusting temperature records to make it appear that things were cooler before than they were. Soon enough we’ll find that no past data is reliable. They will then blame the Mandela effect. Marc Marano suggested that our current post-glacial epoch, the Holocene (11,700 years ago forward), should be renamed the “Adjustocene.”