Climate and Human Civilization over the last 18,000 years

I recommend readers examine this post at WUWT as it puts multiple grand minimums in perspective, in that they follow long warm periods which promoted human growth and expansion. It is interesting to note that the cold periods were accompanied by long-term droughts. Droughts that disrupted civilizations and in many cases promote collapse. Highly recommend reading.

Watts Up With That?

Guest essay by Andy May

This is an updated timeline of climatic events and human history for the last 18,000 years. The original timeline was posted in 2013. The updated full size (Ansi E size or 34×44 inches) Adobe Reader version 8 PDF can be downloaded here or by clicking on Figure 1. It prints pretty well on 11×17 inch paper and very well on 17×22 inch paper or larger. To see the timeline in full resolution or to print it, you must download it. It is not copyrighted, but please acknowledge the author if you use it.


Figure 1 -click for a much larger, printable poster (PDF)

References to the images and data are given in this essay as hyperlinks. I’ve done my best to verify the accuracy of the content by checking multiple sources. When references had different dates for the same event, I chose the most commonly…

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4 thoughts on “Climate and Human Civilization over the last 18,000 years

  1. rishrac November 29, 2015 / 6:32 pm

    It’s that steep drop off that concerns me. Once those temperatures start down, the world could be a very harsh place. In prespective, the 1970’s again would be a whole lot different this time around. More people, and if they get their way in Paris, a whole lot less resources to deal with it. They won’t be able to build coal fired plants fast enough.
    I can suffer through heat without air conditioning, nobody can go through winter without heat. I can see a black market in fossil fuels.

    • rishrac November 29, 2015 / 7:33 pm

      I did down load it to pdf.

  2. Anthony j. Mengotto December 2, 2015 / 11:05 pm

    Russ, I think according to the graph chart in this video shown at 2:39 pause the video at that time and you will see according to the ice core study, over the last 100,000 years there has been 4 ice ages in the past, and at the end of the graph to the right we are already on the down side from the peak of this modern warm period. If graph is correct, and we are about 11,500 years from the last ice age, then we are slowly dipping back into the next ice age. The question is, how much is this next dip going to be over the next 2 solar cycles? Here is the video

  3. wolfy December 15, 2015 / 4:08 pm


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