Sentences with phrase «as polar ice sheets»

Based on what he's seen in the Arctic, and on the latest science, Zukunft said he's planning for six feet of sea level rise by the end of the century, as polar ice sheets and glaciers melt.

Rapidly rising seas resulting from melting glaciers as well as polar ice sheet nearly wiped out the Great Barrier Reef some 125,000 years earlier, according to University of Sydney researchers.

Not exact matches

It basically puts the Southern Ocean up front as the most significant control on the evolution of the polar ice sheet.»

The IPCC has taken a crack at that, identifying 26 «key vulnerabilities» in its most recent assessment, ranging from declines in agricultural productivity to the melting of ice sheets and polar ice cover as well as determining how to judge if they are spiraling out of control.

These dark fans develop on the top of the polar carbon dioxide ice sheet, as it thaws over the spring and summer months.

Geologic shoreline evidence has been interpreted as indicating a rapid sea level rise of a few meters late in the Eemian to a peak about 9 meters above present, suggesting the possibility that a critical stability threshold was crossed that caused polar ice sheet collapse [84]--[85], although there remains debate within the research community about this specific history and interpretation.

On the other hand, during those periods between widespread glaciation, the water had melted from the ice sheets and polar areas, flowed, back into the oceans and sea level was as high or higher than now.

Polar amplication is of global concern due to the potential effects of future warming on ice sheet stability and, therefore, global sea level (see Sections 5.6.1, 5.8.1 and Chapter 13) and carbon cycle feedbacks such as those linked with permafrost melting (see Chapter 6)... The magnitude of polar amplification depends on the relative strength and duration of different climate feedbacks, which determine the transient and equilibrium response to external forcings.

We might have a saviour in the form of the growing antarctic ice sheets in the southern winter as this causes much more planckton to form on the undersurface of the forming ice sheet driving super saturated salty waters deep into the circum polar antarctic bottom waters which is the main driver of the Great Oceanic Conveyor and later on it's travels the AMOC.

«Beyond 2 degrees you risk potentially catastrophic impacts such as a destabilization of the polar land - based ice sheets that would have very severe economic consequences which are not present in the economic models,» Ward at LSE said.

First, shrinking land ice, such as mountain glaciers and polar ice sheets, is releasing water into the oceans.

It is surprising, therefore, that the gross underestimation of pole ward energy transport by the computer models is not reflected as cooling and expansion of the ice sheets over the polar regions.

The President has directed NASA to accelerate the development of new satellites that the National Research Council recommended as Earth science priorities, in addition to flying several research satellites currently in development, conducting a campaign to monitor changes in polar ice sheets, and pursuing enhancements to climate models.

The report predicts that half of the world's identified tipping points — such as the collapse of polar ice sheets and the drying out of the Amazon rainforest — would be crossed under 2 ℃ warming, compared with 20 % of them at 1.5 ℃.

Since to me (and many scientists, although some wanted a lot more corroborative evidence, which they've also gotten) it makes absolutely no sense to presume that the earth would just go about its merry way and keep the climate nice and relatively stable for us (though this rare actual climate scientist pseudo skeptic seems to think it would, based upon some non scientific belief — see second half of this piece), when the earth changes climate easily as it is, climate is ultimately an expression of energy, it is stabilized (right now) by the oceans and ice sheets, and increasing the number of long term thermal radiation / heat energy absorbing and re radiating molecules to levels not seen on earth in several million years would add an enormous influx of energy to the lower atmosphere earth system, which would mildly warm the air and increasingly transfer energy to the earth over time, which in turn would start to alter those stabilizing systems (and which, with increasing ocean energy retention and accelerating polar ice sheet melting at both ends of the globe, is exactly what we've been seeing) and start to reinforce the same process until a new stases would be reached well after the atmospheric levels of ghg has stabilized.

According to the most highly - cited analyses of polar ice sheet melt and contribution to sea level rise, the Antarctic ice sheet as a whole changed in mass by -71 gigatonnes (GT) per year between 1992 and 2011.

The Melting Arctic Melting Ice Displaces Walruses In The Russian Arctic Ice Melt Causing Death of Polar Bears And there were the pictures of polar bears stranded on sheets of floating ice, accounts of their deaths «as a result of Global Warming» and even a documentary about the plight of the polar beaIce Displaces Walruses In The Russian Arctic Ice Melt Causing Death of Polar Bears And there were the pictures of polar bears stranded on sheets of floating ice, accounts of their deaths «as a result of Global Warming» and even a documentary about the plight of the polar beaIce Melt Causing Death of Polar Bears And there were the pictures of polar bears stranded on sheets of floating ice, accounts of their deaths «as a result of Global Warming» and even a documentary about the plight of the polar beaice, accounts of their deaths «as a result of Global Warming» and even a documentary about the plight of the polar bears.

As he frames the question: «Which is the more environmentally sensitive thing to do: let the Greenland ice sheet collapse and polar bears become extinct, or throw a little sulfate in the stratosphere?

The polar ice sheets serve as «thermostats» of global temperatures from which cold air and cold ocean currents emanate, moderating the effects of solar radiation.

In relation to fossil fuels and global warming, as the planet heats up, the oceans expand due to the melting of polar ice sheets.

As temperatures rise, the risks increase that vulnerable elements of the climate system — the polar ice sheets, the Amazon rainforest, West African monsoon, and others — will cross critical thresholds, or tipping points.

Melting Arctic ice - sheets will reduce ocean salinities (IPCC, 2001), causing species - specific shifts in the distribution and biomass of major constituents of Arctic food webs, including poleward shifts in communities and the potential loss of some polar species (such as the narwhal, Monodon monoceros).