Sentences with phrase «current glacial period»

Not exact matches

Instead, the fossil record indicates they vanished during the Earth's glacial - interglacial transition, which occurred about 12,000 years ago and led to much warmer conditions and the start of the current Holocene period.

But some researchers have argued that the transition from the frigid climatic period known as the Last Glacial Maximum (LGM)-- about 20,000 to 25,000 years ago — to the current warm Holocene Epoch brought habitat changes that killed off the mammoths with little or no help from humans.

Climate researchers from the Helmholtz Young Investigators Group ECUS at the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI) in Potsdam have now investigated how temperature variability changed as the Earth warmed from the last glacial period to the current interglacial period.

From the height of the last glacial period 21,000 years ago to our current interglacial period, the Earth has warmed by an average of five degrees Celsius.

Understanding the complex interplay between climate and biotic interactions is thus essential for fully anticipating how ecosystems will respond to the fast rates of current warming, which are unprecedented since the end of the last glacial period.

Researchers at the Laboratoire Ecologie des Systèmes Marins Côtiers (CNRS / IRD / Universités Montpellier 1 and 2 / IFREMER) and the Laboratoire CoRéUs 2 (IRD) have shown that the current distribution of tropical marine biodiversity is mainly due to the persistence of such refugia during glacial periods in the Quaternary.

However, as stated in our Report (1), the spatial pattern of warming from the LGM to the current period is likely to resemble warming patterns following previous glacial periods (5, 6).

The results, which include information during the last glacial and interglacial periods, showed that relief from the current dry spell across the interior of the Middle East is unlikely within the next 10,000 years.

At this early stage of knowledge, what was being studied were the glacial periods within the past few hundred thousand years, during the current ice age.

[2] The only current ice sheets are in Antarctica and Greenland; during the last glacial period at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Aglacial period at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South AGlacial Maximum (LGM) the Laurentide ice sheet covered much of North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South America.

The authors predict that this current interglacial period won't give way to a glacial period for another 50,000 years or so.

For example, atmospheric carbon dioxide grew by approximately 30 % during the transition from the most recent cold glacial period, about 20,000 years ago, to the current warm interglacial period; the corresponding rate of decrease in surface ocean pH, driven by geological processes, was approximately 50 times slower than the current rate driven largely by fossil fuel burning.

The emergence of civilization during our current interglacial, the Holocene, has been attributed to the «relative climate quiescence» of this period relative to the massive, abrupt shifts in climate that characterized glacial periods in the form of D - O events.»

Gerald Bond found evidence of cosmogenic isotope changes at each of a long series of warming followed by cooling events (he has able to track 25 events through current interglacial Holocene and into the last glacial period, at which point he reached the limit of the range of the proxy analysis technique) which indicates a solar magnetic cycle change caused the warming followed by cooling cycle.

The current era started about 15,000 years ago, following a very long glacial period.

For example, the Greenland ice core data shows that the Younger Dryas cooling event occurred in a 5 year period (Younger Dryas is the name for a climate change from the current interglacial Holocene, warm period, back to the Wisconsin glacial, cold period, that occurred 12,800 yrs ago).

The mean of a range of studies put the current warm period higher than at any other time since the last glacial (the Holocene period), but of those studies there is wide variance, with some showing higher temperatures, and some showing much lower.

We are of course still in an ice age, as there are polar ice caps, but often people use the term to describe a period of more extensive glaciation, properly called a glacial period in the glacial / inter-glacial cycles within the current millions of years - old ice age.