Sentences with phrase «last warm period»

«During last warming period, Antarctica heated up two to three times more than planet average: Amplification of warming at poles consistent with today's climate change models.»

«Our study really changes the general concept that before the last warming period you had a massive grass steppe that was fundamental to sustaining a huge diversity of mammals,» says Willerslev.

That's how the last warm period ended — suddenly (ice per se returned more gradually).

For example, in the last warm period when rising sea level converted a peninsula on the coastline of France into the island of Jersey.

[36][37] Estimates vary for when the last time the Arctic was ice free: 65 million years ago when fossils indicate that plants existed there to as few as 5,500 years ago; ice and ocean cores going back 8000 years to the last warm period or 125,000 during the last intraglacial period.

Modern Homo sapiens had probably been in Africa during the last warm period in the ice ages, which started 130,000 years ago (this is when you see the first use of fireplaces as a centrally - located feature of encampments, suggesting some change in social organization).

Now only Greenland's ice remains, but the abrupt cooling in the last warm period shows that a flip can occur in situations much like the present one.

And second, that massive continental ice sheets (as existed over Canada and Scandinavia, when most of the abrupt coolings occurred) aren't needed to provide the necessary dilution of the salty surface — that rain or Greenland's meltwater will do, as in that abrupt cooling of the last warm period which occurred when the two continental ice sheets were long gone.

Having two nearby cores has allowed confidence in the interpretation of the last 115,000 years, though the lack of agreement between them during the last warm period 130,000 to 117,000 years ago has raised some questions about how much fluctuation there was in that warm period.

Judging from the duration of the last warm period, we are in the declining centuries of our current one.

Being summer, almost everyone is out at North GRIP, the new site whose cores might resolve the conflict between the two Greenland Summit cores about the cold - and - dry centuries during the last warm period 125,000 years ago.

Furthermore, the missing hotspot in the atmospheric warming pattern observed during the last warming period proves that (1) the IPCC climate theory is fundamentally broken, and (2) to the extent that their theory correctly predicts the warming signature of increased carbon dioxide, we know that carbon dioxide definitely did not cause the recent warming (see here for my full explanation of the missing hotspot).

However the last warming period ended after the usual thirty years or so, and the global temperature is now definitely tracking below the IPCC predictions.

There are a few things to remember about Greenland: many experts are not convinced that current changes are unusual — such changes are cyclic, and the last warm period in Greenland, 1920 - 1940 also saw a lot of melting.

Based on the paleoclimate record from ice and ocean cores, the last warm period in the Arctic peaked about 8,000 years ago, during the so - called Holocene Thermal Maximum.

The major desiccation happened during the planet's last warm period, around 100,000 years ago.