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The Medieval Greenland Vikings Can Teach Us About Climate Change

The Northern Hemisphere of this planet is in a normal warming cycle. It began to manifest itself as the preceding cycle, the Mini-Ice Age (1300-1800), wound down about the mid-19th century. Nothing in global climate happens overnight. Each cycle is of about 500-years duration. With that assumption, we can say that the midpoint of this warming cycle that we are enjoying will be about 2100. In other words, historically speaking, we can expect the climate to gradually trend toward warmer and dryer for the next 92-years. Then it might get worse, historically speaking that is.

The advent of the Medieval Warm Period (800-1300) gave rise to the Viking Age (793-1150). The warmer weather increased production of everything the Vikings ate. Populations among the Viking tribes burgeoned dramatically. This eventually led to thoughts of expansion and conquest; the norm throughout human history. The ice-locked fjords began to clear earlier in the season than normal. The length of the raiding and trading season continued to increase over the 500-year period of the Medieval Warm Period. The Vikings exploded out over the north and western Atlantic Ocean, settling Iceland, Greenland, and areas of northeastern North America. The five hundred years of comparatively benign weather during the Medieval Warm Period fostered the Viking Age. Earth's next weather cycle, the Mini-Ice Age (1300-1800), played a major roll in ending it, especially for isolated-from the homeland-Norse Greenland. The Greenland Norse lifestyle could not be maintained in the face of Climate Change and a changing environment-starvation loomed. Of all the single-cause explanations for the death of Norse Greenland, Climate Change has been the most durable. (Thomas McGovern, Vikings, The North Atlantic Saga, The Demise of Norse Greenland, 2000-Smithsonian Institution, 330-331.)

Now, if the present global Climate Change cycle - Global Warming - is our responsibility, you know carbon offsets, CO2, and whatnot, if we caused this calamity, how do you explain the Medieval Warm Period (800-1300)? It was warmer in the Northern Hemisphere then than it is now. Perhaps the Vikings, the Greenland Norse people whom I write about caused it with their peat fires, flatulent livestock, and whatnot. Sounds ridiculous, huh? It is ridiculous. They had nothing more to do with their natural planetary climate cycle then, than we do with ours today. Remember, all of this climate

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