Sentences with phrase «rapid sea level changes»

A long record of ancient stone tools could tell us if the monkeys picked up tool use in response to an environmental stress, such as rapid sea level changes, for example.

Not exact matches

Climate change projections that look ahead one or two centuries show a rapid rise in temperature and sea level, but say little about the longer picture.

A glaciologist rather than a biologist, he wanted to investigate a question critical to climate change: Do subglacial rivers and lakes lubricate the movement of ice over land — and might they somehow accelerate a glacier's flow into the ocean, triggering rapid sea level rise?

China's aging population and rapid migration to coastal urban centers will make the country more susceptible to effects of climate change like rising sea levels and extreme weather events, recent research by scientists at University College London and experts from the United States, China and India has found.

But the rapid retreat seen in the past 40 years means that in the coming decades, sea - level rise will likely exceed this century's sea - level rise projections of 3 feet (90 centimeters) by 2100, issued by the Intergovernmental Panel on Climate Change (IPCC), said Sridhar Anandakrishnan, a glaciologist at Pennsylvania State University, who was not involved in the study.

Cryosphere Systems: How do rapid changes in cryosphere (continental and ocean ice) systems evolve with the earth system, and contribute to sea - level rise and increased coastal vulnerability?

Current changes in the ocean around Antarctica are disturbingly close to conditions 14,000 years ago that new research shows may have led to the rapid melting of Antarctic ice and an abrupt 3 - 4 metre rise in global sea level.

Anderson, J.B. and Thomas, M.A., 1991, Marine ice sheet decoupling as a mechanism for rapid, episodic sea - level change: the record of such events and their influence on sedimentation: Sedimentary Geology, v. 70, p. 87 - 104.

That estimate was based in part on the fact that sea level is now rising 3.2 mm / yr (3.2 m / millennium)[57], an order of magnitude faster than the rate during the prior several thousand years, with rapid change of ice sheet mass balance over the past few decades [23] and Greenland and Antarctica now losing mass at accelerating rates [23]--[24].

The symptoms from those events (huge and rapid carbon emissions, a big rapid jump in global temperatures, rising sea levels, ocean acidification, widespread oxygen - starved zones in the oceans) are all happening today with human - caused climate change.

The important point is that the uncertainty is not about whether continued rapid CO2 emissions would cause large sea level rise, submerging global coastlines — it is about how soon the large changes would begin.

Our study reveals the significant consequences of rapid Arctic sea - ice loss for keeping climate change to low levels.

Other likely consequences (e.g. rapid dynamical sea level changes, shift in the inter-tropical convergence zone and hence tropical precipitation patterns) are discussed in the Rahmstorf and Zickfeld editorial essay mentioned above, and the references therein.

In any case, a sudden local sea level rise via rapid subsidence is most unlikely and such a rapid change due to proglacial lake release (or whatnot) even less so.

Similarly, times with especially intense high - latitude NH summer insolation, determined by orbital changes, are thought to trigger rapid deglaciations, associated climate change and sea level rise.

Sea level rise, ocean acidification and the rapid melting of massive ice sheets are among the significantly increased effects of human - induced global warming assessed in the survey, which also examines the emissions of heat - trapping gases that are causing the climate change.

«At the end of the last ice age around 11,000 years ago, the ice sheet went through a period of rapid, sustained ice loss when changes in global weather patterns and rising sea levels pushed warm water closer to the ice sheet — just as is happening today,» NASA said.

The symptoms from those events (a big, rapid jump in global temperatures, rising sea levels, and ocean acidification) are all happening today with human - caused climate change.

The transition between the Medieval Warm Period and the Little Ice Age has been named the «A.D. 1300 Event» and has been identified as a time of rapid cooling, sea - level fall, and cultural change.

The supposed stable configuration of geography, with relatively predictable climate patterns, coastlines and icepacks in familiar locations, and clear demarcations of territorial control on land are increasingly dubious assumptions as weather patterns change, sea levels rise and ice packs disintegrate while technological innovations, communications and global markets cause rapid fluctuations in the price in food and other essentials across boundaries.

Once this La Nina faded, sea levels rebounded sharply, and that rise might have been incorrectly interpreted as some rapid acceleration in the long - term sea level rise, when in fact, mass was shifting back from land to ocean as rainfall patterns changed once more, but also much of the excess water on the land was draining back to the oceans.

Low - probability high - consequence impacts, such as extremely rapid climate change or sea level rise 5.

But rapid loss of Arctic ice due to climate change is leading to great shifts — temperatures are increasing, storms are intensifying and sea levels are rising as we move towards irreparable damage.

The evidence for rapid climate change is compelling: Sea level rise, Global temperature rise, Warming oceans, Shrinking ice sheets, Declining Arctic sea ice, Glacial retreat, Extreme events, Ocean acidification, Decreased snow cover http://climate.nasa.gov/evidence/ It's changing «rapidly&raquSea level rise, Global temperature rise, Warming oceans, Shrinking ice sheets, Declining Arctic sea ice, Glacial retreat, Extreme events, Ocean acidification, Decreased snow cover http://climate.nasa.gov/evidence/ It's changing «rapidly&raqusea ice, Glacial retreat, Extreme events, Ocean acidification, Decreased snow cover http://climate.nasa.gov/evidence/ It's changing «rapidly».

The IPCC 2007 Fourth Assessment of climate change science concluded that large reductions in the emissions of greenhouse gases, principally CO2, are needed soon to slow the increase of atmospheric concentrations, and avoid reaching unacceptable levels.However, climate change is happening even faster than previously estimated; global CO2 emissions since 2000 have been higher than even the highest predictions, Arctic sea ice has been melting at rates much faster than predicted, and the rise in the sea level has become more rapid.

This is perhaps the biggest change over the 4th IPCC report: a much more rapid sea - level rise is now projected (28 — 97 cm by 2100).

[Translate] New research suggests that, If managed well, shorelines could adapt naturally to rapid changes in sea level.

The millennial (500-2000 year) time scale of deep ocean ventilation affects the time scale for natural CO2 change and thus the time scale for paleo global climate, ice sheet, and sea level changes, but this paleo millennial time scale should not be misinterpreted as the time scale for ice sheet response to a rapid large human - made climate forcing.

The result is a dramatic image of historic sea level change that goes beyond what is expected in the coming decades due to rapid global warming - induced ice cap melting.

That estimate was based in part on the fact that sea level is now rising 3.2 mm / yr (3.2 m / millennium)[57], an order of magnitude faster than the rate during the prior several thousand years, with rapid change of ice sheet mass balance over the past few decades [23] and Greenland and Antarctica now losing mass at accelerating rates [23]--[24].

Paleoclimate data are not as helpful for defining the likely rate of sea level rise in coming decades, because there is no known case of growth of a positive (warming) climate forcing as rapid as the anthropogenic change.

«Neumann and Hearty (1996) considered the transition from warmer - than - present «greenhouse» conditions during sub-stage 5e to mid-glacial «icehouse» conditions of 5d to be a climatic «madhouse» in the Bahamas on the basis of geologic evidence of rapid sea - level changes, dune building, and intense storms at that time.»

The important point is that the uncertainty is not about whether continued rapid CO2 emissions would cause large sea level rise, submerging global coastlines — it is about how soon the large changes would begin.

The West Antarctic ice sheet is probably more susceptible to rapid change, because much of it rests on bedrock well below sea level [92]--[93].

Infrastructure across the U.S. is being adversely affected by phenomena associated with climate change, including sea level rise, storm surge, heavy downpours, and extreme heat... Floods along the nation's rivers, inside cities, and on lakes following heavy downpours, prolonged rains, and rapid melting of snowpack are damaging infrastructure in towns and cities, farmlands, and a variety of other places across the nation.

The evidence for rapid climate change is compelling: Sea level rise Global temperature rise Warming oceans Glacial retreat

That's because the risk of triggering abrupt changes in the climate system — such as rapid sea level rise or widespread droughts — becomes high above one of two degrees warming.

(Note that there are separate essays for the topics ice sheets and rising sea level and rapid climate change.)

There are other definite costs: costs when buildings suffer damage from sea level rise, storm surges and floods; costs when we have to take steps to protect ourselves from rapid climate changes; coats when we have to deal with the results of permafrost melt; costs when land loses value because of climate change.

Global warming has been stuck in neutral for more than a decade and a half, scientists are increasingly suggesting that future climate change projections are overblown, and now, arguably the greatest threat from global warming — a large and rapid sea level rise (SLR)-- has been shown overly lurid (SOL; what did you think I meant?).

Driven by changes in ocean circulation, the rapid sea level rise will bring increased risk of damage from hurricanes and winter storm surges, researchers say.

There must have been brief periods of very rapid temperature change mixed in there (certainly on the regional level) in addition to slower - warming periods, and I'm under the impression other data (such as Greenland ice cores and deep - sea cores) support that scenario as well.

If sea level begins changing more rapidly, for example due to rapid changes in ice sheet dynamics, then this simple extrapolation will likely represent a conservative lower bound on future sea - level change.