The following two graphs (images created by Robert A. Rohde / Global Warming Art) are climate records based on oxygen isotope thermometry of deep-ocean sediment cores from many parts of the world [1]). On both graphs, colder temperatures are toward the bottom, and warmer temperatures toward the top. Significant temperature events on the first graph show the start and end of Antarctic glaciation 34 and 25 million years ago, and the resumption of glaciation about 13 million years ago. It is obvious from the graph that we are now living in the coldest period of Earth’s history for the last 65 million years. Despite recent rumors of global warming, we are actually in a deep freeze.
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Notes:
When we get into these kinds of numbers we have to take into account “plate tectonics“). Continents move a lot over time. “Move” as in move from a near equator position to far northern latitudes. Just something to consider as you read the story.
I know this entry is a mess but after playing with the code a bit and getting nowhere fast I’m moving on.
I don’t understand the science (if there is any), but here is an indisputable fact you can hang your hat on, we will all be dead in 100 years and this is moot point. Its a glorious day in Northern Alberta, quiet, warm and sunny. I intend to enjoy the weather in all its mysterious manifestations. Cheers.
I don’t put any more trust in the proxy temperatures derived from oxygen isotopes in sea beds anymore than tree rings in Siberia despite the fact that this presentation if true would prove my personal point of view.