Sentences with phrase «hundreds to thousands of years»

... Moreover, research indicates that increased levels of carbon dioxide will remain in the atmosphere for hundreds to thousands of years.

Researchers had thought this process took hundreds to thousands of years.

This coastal melting has been operating at time scales of hundreds to thousands of years.

Using tree rings, researchers have created a record of droughts dating back hundreds to thousands of years.

And many regions have shown no significant net changes or trends in either direction relative to the last few hundred to thousands of years.

And to find those answers, one must go back and look at what was happening with temperatures hundreds to thousands of years ago.

The remainder might well stay in the soil for hundreds to thousands of years.

And isn't that a process that takes hundreds to thousands of years?

They get increased by quite a lot here — for a few hundred to thousands of years, by a factor of a few hundred.

Basically, although the gas is indeed easily absorbed by sea - water, it is the timescales that matter: mixing of shallow and deep oceanic waters takes place over hundreds to thousands of years but sea - water can de-gas parts of its carbon dioxide payload over much, much shorter periods.

It may not be a road map to the next 100 years, but the Pliocene is a rough guide to the high sea levels, vanishing ice and altered weather patterns that might arrive hundreds to thousands of years from now.

Virgin birth, the Magi, December 25th and on and on all had precedents hundreds to thousands of years before they were supplanted and reworked in the 2nd and 3rd century AD and placed in the first century for «discovery» and falsely attributed.

«In the boreal region, there is a thick organic layer on the surface comprised of litter and soil, that in some cases is hundreds to thousands of years old,» Mack said.

Oceans may have lasted only hundreds to thousands of years, while the intervening cold, dry spells lasted much longer.

But most proteins and other organic matter completely decay within hundreds to thousands of years after the animal has died.

Cryopreserved sperm may remain viable for hundreds to thousands of years when kept at ultra-low temperatures with liquid nitrogen.»

Given the atmospheric lifetime of carbon dioxide is many hundreds to thousands of years, we can now understand that long - lived greenhouses will also continue to exert a warming influence on the worlds oceans for a very long time.

However, these motions can be obscured by episodes of glacial advance or retreat that occurred hundreds to thousands of years ago3, 4,5,6, which trigger a delayed response because of viscous flow in the underlying mantle.

Second, peatlands are formed by hundreds to thousands of years of accumulation of dead vegetation.

Basically, although the gas is indeed easily absorbed by sea - water, it is the timescales that matter: mixing of shallow and deep oceanic waters takes place over hundreds to thousands of years but sea - water can de-gas parts of its carbon dioxide payload over much, much shorter periods.

The ZH curves show that the removal starts at a fairly rapid rate initially, but then flattens out, so that a half - life is reached within 50 to 120 years and it would take hundreds to thousands of years for 75 % to be removed.

In fact, says Hale, a one kilometer -LRB-.6 mi) impactor would cause Charon to have an atmosphere for hundreds to thousands of years, although one wasn't present when New Horizons made its flyby.

By studying variations in tree rings in forests around the world, Neil Pederson and colleagues at the Tree Ring Laboratory at Columbia University's Lamont - Doherty Earth Observatory in New York have created a record of droughts and wet periods dating back hundreds to thousands of years.

Recent research suggests that healthy, intact coastal wetland ecosystems such as mangrove forests, tidal marshes and seagrass meadows are particularly good at drawing carbon dioxide from the atmosphere and storing it for hundreds to thousands of years.

He and climate scientist Johannes Feldmann, also of the Potsdam climate center, wanted to examine how the destabilization would progress in the longer term, over hundreds to thousands of years.

«We know that bacteria have the potential to remain viable and metabolically active at low temperatures for hundreds to thousands of years,» said Redeker.

During that time, which can last hundreds to thousands of years, glaciers and ice sheets expand in size and depth.

It involves a slow discovery of a new equilibrium between the planet's temperature and its ice and oceans that would play out over hundreds to thousands of years, meaning that we are committed to it for a long time, although the rate and extent of rise will depend on the rate and extent of warming itself.

While major oceanographic and ecological disruption due to abrupt climate warming occurs on the timescale of a human life (from decades to centuries), recovery from abrupt warming disturbances can take hundreds to thousands of years.

IPCC scientists assume that human CO2 emissions will continue to accumulate in the atmosphere, remaining anywhere from hundreds to thousands of years.

That carbon is transported to depths where it can be harmlessly sequestered for hundreds to thousands of years.

IPCC global warming science claims human CO2 emissions remain in the atmosphere for hundreds to thousands of years (not likely, but we'll assume it for this analysis).

The complex system of physical, biological, and social interactions influencing water resources has modified our fragile western ecosystems, where recovery from degradation can take hundreds to thousands of years; and where expectations of what is «normal» change with each generation.