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Climate always has been changing ...

Climate always has been changing - this is another insight from that research paper published by bild der wissenschaft and the German Research Centre for Geosciences I am currently reading.

Today we live in a warm period lasting since 11.000 years. During this period climate changes have been moderate, but there had been a few with a major impact on human culture. The warm period before was 126.000 years ago.

When the Romans conquered Gaul and Germania 2000 years ago a temperature rise of 1 or 2 degrees supported that by melting away glaciers in the Alps. 1700 years ago it became possible first time to grow Wine North of the Alps. 1600 years ago glaciers started to grow again, many Roman roads in the mountains became unusable. Hunger crisis and major migrations took place in Europe.

Another temperature rise took place in the Middle Age, when it was warmer in Greenland than it is today. Agriculture was done at an altitude 200 meters higher than today. It became possible to grow wine in Scotland and Vikings were able to found settlements on Iceland and even Greenland.

Another cold period followed and Vikings had to give up these settlements. New crop failures and hunger crisis struck Europe.

Climate always has been changing. Minor temperature changes of 1 or 2 degrees already had major impacts on human culture. We should get used to this.

4 blog comments below

It's been well documented that climate has always been changing, I don't think anyone has made an effort to refute this with any degree of seriousness. The question for many relates to the rate at which climate is currently changing and the causes of the rate. Anyone without a political/monetary stake in denying it pretty much agrees that the current change is a net increase in temperature, and its associated changes in weather patterns, and that the rate is higher than it naturally would be expected... and that the cause of the accelerated rate is human activity, primarily by burning fossil fuels (though other sources contribute).
Ankhanu on Wed Aug 01, 2012 10:27 pm
Well, as the authors of the study say: we live in a relatively calm period.
I think the fear of climate change has two major reasons nowadays: media and the fact that population on this planet has grown that fast.
The first reason means: media is pushing the fear factor. Fear and bad news sell well.
The second one means: as we more and more live in mega cities and many mega cities are located at coast lines the impact of even a minor climate change nobody would have cared about 10.000 years ago today might mean a dramatic impact. And: agriculture is very critical to ensure food for all these people. A small decline in output can mean trouble for many people.
amagard on Thu Aug 02, 2012 12:50 pm
Good job finding these articles they are worth the read. It would help some people to read them. I do not know where I stand on the issue. For one climate change is a natural occurence and two I do believe that mankind has affected the rate of climate change. I am not sure however if our influence on it was beneficial or harmful. Only time will tell.
pauline123 on Thu Aug 02, 2012 5:42 pm
Another temperature rise took place in the Middle Age, when it was warmer in Greenland than it is today.
Hmm...but what about the rest of the world? This statistic is frequently cited by climate change deniers - but, unlike you, they frequently make the claim that the 'world' was warmer. I congratulate you for giving the correct scope.
Certainly climate has changed over history. Climate scientists are more aware of this than most. The point is that climate is now changing at a rate which has not been seen before.

Potholer54 has made a very informative video on this particular issue which is worth the watch
Bikerman on Thu Aug 02, 2012 6:22 pm

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