Sentences with phrase «during the ice age»

Let's reasonably assume the oceans during the ice age were CO2 balanced with the atmosphere.

It's probably extremely naive of me but perhaps somebody could explain what is the current theory regarding the changing CO2 levels during the ice ages.

He replied in affirmative, saying that this happened during the Ice Age.

Studies of the organisms that lived there — and may still — will provide insight into life during the ice ages and on other planets, scientists say.

Scientists believe they have discovered the reason behind mysterious changes to the climate that saw temperatures fluctuate by up to 15 °C within just a few decades during the ice age periods.

The hole is the opening to what was a dry cave system during the Ice Age.

And it's not that much colder in the tropics during an ice age (most of us would likely rate it more comfortable).

Combine the two and you've got a total system sensitivity for conditions during an ice age.

Set during the Ice Age, a young boy is left for dead after a violent hunt.

When sea level drops during ice ages, they found, the decreased pressure on the mantle through the thin ocean floor would increase the rate of mantle melting.

It turned up when nature had a change of heart about its earthly décor during the Ice Age when a land - lift left in a lake in its place.

It was originally formed many years ago during the Ice Age.

Scientists who have studied past phases of climate change have found that iron dust may have caused similar effects during ice ages and are hoping to replicate those without causing unwanted fallout.

And it's not that much colder in the tropics during an ice age (most of us would likely rate it more comfortable).

Combine the two and you've got a total system sensitivity for conditions during an ice age.

There are native earthworms in North America, but not in regions that had been covered in glaciers during the Ice Age.

Blue holes are circular holes formed during ice ages when fresh water dissolves and leaves limestone deposits.

They have focused on looking at the warmer climates of the Cenozoic (the Pliocene, etc.) to avoid the confusion from the response of ice sheets to orbital forcing during the ice age cycles of the Pleistocene, but obviously have significant uncertainties due to less precision about ancient greenhouse gas levels.

This file provides details concerning the measurement methods, the intercomparison between Bern and Grenoble, the time relationship between CO2 and Antarctic temperature anomaly in general as well as during ice age terminations.

The abrupt climate changes during the ice age could be triggered by several mechanisms that have affected the powerful ocean current, the Gulf Stream, which transports warm water from the equator north to the Atlantic, where it is cooled and sinks down into the cold ocean water under the ice to the bottom and is pushed back to the south.

The nation claims that its ancestors fled for survival to a coastal area in Canada that never froze during the Ice Age.

So CO2 during ice ages should be thought of as a «feedback», much like the feedback that results from putting a microphone too near to a loudspeaker.

It is believed that the first people to populate Mexico came to the American continents by crossing the Bering Strait from Asia during an Ice Age at least fourteen thousand years ago.

It goes up and down on natural irregular ~ 900 yr and ~ 3600 year cycles (just like it did during the ice age from from 50000 years ago to now) and we are just now (since 1700) going into the warming cycle.

Rasmussen's article shows that repeated, severe melting of the ice sheet contributed to a very unstable climate even during the Ice Age.

Figure 5: Climate forcings during the ice age 20,000 years ago relative to the pre-industrial Holocene from Hansen and Sato (2011)

The local diversity and unique geologic history (covered by neither glaciers nor oceans for the past 225 million years, the Ozarks provided refuge for migrating species during the Ice Age) explain the richness of the lichens here: some 600 named species, along with 30 recently discovered ones awaiting their official designation.

Dramatic changes in the distribution of plants and animals during the ice ages illustrate how climate influences the distribution of species.

One popular theory is that the first native North Americans ventured from Asia over an ice - free, Alaskan land bridge to what is now western and central Canada during the Ice Age.

There has been speculation that the reason could be astronomical variations, but we can now rule this out as the large fluctuation during the ice age behave in the same «fractal» way as the other natural fluctuations across the globe,» Peter Ditlevsen.

Because the ocean is the place where most of the carbon dioxide that was not in the atmosphere during ice ages was stored, understanding how that CO2 gets exchanged between the ocean and the atmosphere is important.

«One of the big questions is: Why was the climate and why were CO2 levels so different during ice ages than during warm times?

John Stewart said, «During the Ice Age just over 40 thousand years ago in the north of England Neanderthals were living in an environment which included extinct animals like woolly mammoths, woolly rhinos and cave hyenas as well as the more familiar horses and reindeer.

As continental ice sheets grew during the ice ages, flow through the Strait of Gibraltar was reduced, causing measurable increases in the oxygen isotope O - 18 (8 protons and 10 neutrons) relative to O - 16 (8 protons and 8 neutrons) in Mediterranean waters, which became preserved in the shells of the ancient plankton.