Sentences with phrase «through past ice ages»

Not exact matches

We present a synthesis of decadally resolved proxy temperature records from poleward of 60 ° N covering the past 2000 years, which indicates that a pervasive cooling in progress 2000 years ago continued through the Middle Ages and into the Little Ice Age.

The paper also finds that several significant past climate fluctuations — including a warm spell that peaked around 1100 A.D. called the medieval warm period and the so - called little ice age from the 1400s through the 1700s — were global in scope.

The models continued to reproduce, with increasing precision, many kinds of past changes, all the way back through the ice ages.

As I have stated publicly on many occasions, there is no definitive scientific proof, through real - world observation, that carbon dioxide is responsible for any of the slight warming of the global climate that has occurred during the past 300 years, since the peak of the Little Ice Age.

I knew that it was warmer in the past and we went through ice ages but only in a broad outline.

The ice contains minute bubbles of prehistoric air trapped when it was formed, and once a reliable method had been developed by which to isolate and analyse that air (it is done in a vacuum), it was possible to get an idea of the composition of the atmosphere of the past, through ice - ages and interglacials.