Sentences with phrase «end of a glacial period»

The beginning and end of a glacial period are clearly times of global climate change, but there are also periods of abrupt change in climate patterns within those periods.

At the end of the glacial periods, CO2 increases about 80 ppm over ~ 10,000 years.

The «stuff on the bottom» of a coal seam is the tail end of a glacial period, she said.

I've understood that he also predicted the ~ 1000 year time lag between temperature rise and CO2 at the end of a glacial period, before it was observed in the ice cores thanks to better dating techniques.

Not exact matches

These may be submerged ancient shorelines cut during times of lower sea level, «the most recent of which occurred during the last glacial period, which ended about 19,000 years ago,» Chaytor said.

A prehistoric human skeleton found on the Yucatán Peninsula is at least 13,000 years old and most likely dates from a glacial period at the end of the most recent ice age, the late Pleistocene.

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.

However, some species of animals survived the end of the last glacial period somewhat longer than others.

They compared the carbon - 13 and nitrogen - 15 values in the giant deer bones from the Swabian Alb caves with those of red deer, other giant deer and reindeer, which were living at the beginning and the end of the last glacial period.

Woolly mammoths disappeared from Siberia and North America about 10,000 years ago, along with other giant mammals that went extinct at the end of the last glacial period.

«Conversely, there is more and better evidence across Iceland that when the ice sheet underwent major reduction at the end of the last glacial period, there was a large increase in both the frequency and volume of basalt erupted — with some estimates being 30 times higher than the present day.

However, it's quite a different matter melting a long - lived massive ice sheet up to 1.5 km thick that covers over 70 % of the land surface (as happened at the end of the last glacial period), from melting isolated and much thinner ice caps / sheets that only cover about 11 % of the land surface (i.e. present - day).»

Just 200 years before the young girls» short lifetimes, the last glacial period of the Pleistocene Epoch (2.6 million — 11,700 years ago) ended.

It is very unlikely that the Milankovitch cycles can start or end an ice age (series of glacial periods):

The history of Scotland is known to have begun by the end of the last glacial period (in the paleolithic), roughly 10,000 years ago.

Interesting study out on the outgassing of CO2 from the northern Pacific to end the last glacial period:

It is therefore estimated that about 500 billion tons of carbon were emitted into the atmosphere at the end of the last glacial period.

In the mid-latitudes and the tropics, the end of the last glacial period was marked by a tremendous increase in rainfall.

[1] It began with the end of the cold period known as the Oldest Dryas, and ended abruptly with the onset of the Younger Dryas, a cold period that reduced temperatures back to near - glacial levels within a decade.

During the Earth's ice ages the Pacific Ocean stored large amounts of carbon, which for some reason it released again close to the last glacial period's end, warming the world and melting most of the icecaps.

Few people have read paleo - climatology text books, are aware of the glacial / interglacial cycle, are aware that the paleoclimatic record has unequivocal evidence of cyclic gradual changes and cyclic abrupt climate events, are aware that the abrupt climate change events such as the abrupt termination of the last 22 interglacial periods lacks an explanation, are aware that all of the past interglacial periods are short (roughly 12,000 years) and that they have ended abruptly, and so on.

Kent points out that according to the Milankovitch theory, we should be at the peak of a 20,000 - some year warming trend that ended the last glacial period; the Earth may eventually start cooling again over thousands of years, and possibly head for another glaciation.

Suess reported that the last glacial period had ended with a «relatively rapid» rise of temperature — about 1C (roughly 2F) per thousand years.

A new study documents evidence of a massive release of carbon from permafrost as temperatures rose at the end of the last glacial period.

In addition, the rate of warming over the 21st century is projected to be far faster than has occurred over such periods since the end of the last glacial period, again long before societal development.

A new study is shedding light on what that could mean for the future by providing the first direct physical evidence of a massive release of carbon from permafrost during a warming spike at the end of the last glacial period.

Rhetorically speaking, was glacial melt and SLR from warming «equally measured» in 150 year increments from 20k years ago at the end of the LIA to 10k years ago when the last glacier receded from New York; or did the velocity of SLR increase over this period as factors, like the before mentioned, accelerated the velocity of melt through the period?

For the last three thousand years, Since 1000 BC, the end of the Minoan Warm Period, the global temperature trend has been -0.5 to -0.7 dgC per 1000 yrs, projecting full glacial of 8 dgC in another 7,000 yrs.

1998 was near the tail end of a decade that jumped well above the mean average longer term rate of increase (there is a thing called climate variability, it didn't disappear with climate change, and if anything probably only intensified;, and ocean warming and glacial melt both accelerated during this period, taking more energy out of the air — see below).

------- * Not to mention that there is an event similar to the Younger Dryas at the end of at least one other glacial period, «termination III» (see e.g. Carlson et al., 2008).

The problem was the Pleistocene extinction, the disappearance of most species of large mammals across most of the world at the end of the last glacial period some 12,000 years ago.