The Last 12,000 Years Show a More Complex Climate History Than Previously Thought

We are capable of measuring temperature for barely 300 years. We have somewhat reliable records for the last 30 years on a somewhat global scale. Most of what happened before 1500 can only be deduced from the historical record, traces in ice cores, and some other traces such as planting patterns and what’s left of them in the soil. Hardly accurate but even when people in antiquity could not measure temperature, they could record what grew where and when. Red wine is notorious for not growing well in Scandinavia. Thats why we have no Norvegian Cabernets. But it grew way more north than today during the various warm periods in the past. Our measuring and record keeping got better, not the weather more volatile. 

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