Sentences with phrase «about glaciers and ice sheets»

Chris Dudley (21, 40)-- Based on some limited knowledge about glaciers and ice sheets, I am of the fairly firm opinion that nothing above 300 ppm CO2e preserves a «safe» climate, in the long run.

Not exact matches

Tranter says he got the idea for Black and Bloom about four years ago, when he was working on the margins of the Greenland ice sheet and forgot his glacier goggles.

The study fuels a growing concern among scientists about the factors affecting the Antarctic ice sheet — namely, that warm ocean waters are helping to melt glaciers and drive greater levels of ice loss, particularly in West Antarctica.

Melting of glaciers and the massive ice sheets of Greenland and Antarctica will combine for a rise in sea levels of 25 meters, or about 80 feet.

Jakobshavn Glacier is of interest because it is the fastest - moving glacier in the world and drains about 7.5 percent of the Greenland Ice Sheet.

A new study by scientists at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, and the University of California, Irvine, shows that while ice sheets and glaciers continue to melt, changes in weather and climate over the past decade have caused Earth's continents to soak up and store an extra 3.2 trillion tons of water in soils, lakes and underground aquifers, temporarily slowing the rate of sea level rise by about 20 percent.

It is noteworthy that whereas ice melt from glaciers, ice caps and ice sheets is very important in the sea level budget (contributing about 40 %), the energy associated with ice melt contributes only about 1 % to the Earth's energy budget.

This bundle contains 11 ready - to - use Ice Age Worksheets that are perfect for students who want to learn more about An ice age which is a period of long - term reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glacieIce Age Worksheets that are perfect for students who want to learn more about An ice age which is a period of long - term reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glacieice age which is a period of long - term reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glacieice sheets and alpine glaciers.

Overall, I estimate the mass balance of the Greenland ice sheet to be about -80 + / -10 cubic km of ice per year in 2000 and -110 + / -15 cubic km of ice per year in 2004, i.e. more negative than based on partial altimetry surveys of the outlet glaciers.

Maybe this will put to rest the scenario of melting glaciers sliding into the sea and inundating Bangladesh, but I guess there's still the West Antarctic Ice Sheet to fantasize about.

# 186 David Benson: While you may be correct about the GIS and Swiss glaciers, the Laurentide Ice sheet retreated from northern Quebec (i.e. the mainland) about 6500 years ago.

They are also swollen by melting glaciers, ice caps and ice sheets: Greenland's ice is on track to melt completely, which will eventually raise the sea level by about seven metres (23ft).

The melt - off from the world's ice sheets, ice caps and glaciers over eight years of the past decade would have been enough to cover the United States in about 18 inches (46 centimeters) of water, according to new research based on the most - comprehensive analysis of satellite data yet.

First, long before the two great ice sheets, Greenland and Antarctica, disappeared, we would lose all of the inland glaciers that currently provide most of the water for about a billion people.

Greenland's largest outlet glacier, Jakobshavn Isbrae, drains about 7 % of the Greenland ice sheet and generates 10 % of the Atlantic's icebergs.

While worries about rising sea levels are focused on the massive ice sheets of Greenland and Antarctica, the loss of small mountain glaciers comes with its own consequences.

IPCC synthesis reports offer conservative projections of sea level increase based on assumptions about future behavior of ice sheets and glaciers, leading to estimates of sea level roughly following a linear upward trend mimicking that of recent decades.

Endless stories about glaciers melting, polar bears, ice sheets in Greenland and Antarctica and sea ice form the view that there is virtually no ice left on the surface of the planet.

Re your last comment, I think the paper was focused entirely on the three ice sheets, and didn't purport to draw any conclusions about the small glaciers or the overall melt / SLR budget.

Loss of glacial volume in Alaska and neighboring British Columbia, Canada, currently contributes 20 % to 30 % as much surplus freshwater to the oceans as does the Greenland Ice Sheet — about 40 to 70 gigatons per year, 66,78,63,57,64,58 comparable to 10 % of the annual discharge of the Mississippi River.79 Glaciers continue to respond to climate warming for years to decades after warming ceases, so ice loss is expected to continue, even if air temperatures were to remain at current leveIce Sheet — about 40 to 70 gigatons per year, 66,78,63,57,64,58 comparable to 10 % of the annual discharge of the Mississippi River.79 Glaciers continue to respond to climate warming for years to decades after warming ceases, so ice loss is expected to continue, even if air temperatures were to remain at current leveice loss is expected to continue, even if air temperatures were to remain at current levels.

However, instead of digging into the soil, they look for clues about our planet's climate history by studying coral reefs, digging into ocean and lake floor sediment and drilling deeply into glaciers and ice sheets.

On terrestrial ice sheets, it says the total committed sea level rise today is ultimately about 1 metre, mainly from existing glacier melt and the thermal expansion of seawater.

The planet's glaciers and ice sheets cover about 11 % of the planet's surface and hold about 70 % of the world's fresh water.

Tune in to gain a clearer understanding of the geological, climatological, and historical data, and get the facts straight about the Arctic, ice, ice sheets, and glaciers once and for all.

Presenting such alternative figures confuses and undermines the public understanding of the actual science, which is an understanding about the driving mechanisms of sea level rise: thermal expansion of ocean water, melting of mountain glaciers and complex dynamics of large ice sheets — in correspondence again with projected temperature rise, that is in turn a product of projected rises of greenhouse gas concentrations using calculated estimates of climate sensitivity, together creating a net disturbance in Earth's energy balance, the very root cause of anthropogenic climate change.

In its most recent estimates on sea - level rise, the United Nations Intergovernmental Panel on Climate Change reported in 2007 that warming ice sheets and glaciers could raise sea levels from 20 to 50 centimeters (about eight to 20 inches) by 2100.

In each case, we learn something of the research that garnered the knowledge we possess — and often, something about the personality of the researcher, too, whether Lonnie Thompson, trekking Peruvian glaciers to measure their vital statistics, or John Mercer, who was occasionally known to do geological fieldwork in the nude — though presumably not for his best remembered research — studying the West Antarctica Ice Sheet.

The two glaciers between them account for 12 % of the island's ice sheet, and if both collapsed into the sea and melted entirely, global sea levels would rise by about a metre.

The abstract is as follows: The Greenland ice - sheet would melt faster in a warmer climate and is likely to be eliminated — except for residual glaciers in the mountains — if the annual average temperature in Greenland increases by more than about 3 °C.

Such solecisms throughout the IPCC's assessment reports (including the insertion, after the scientists had completed their final draft, of a table in which four decimal points had been right - shifted so as to multiply tenfold the observed contribution of ice - sheets and glaciers to sea - level rise), combined with a heavy reliance upon computer models unskilled even in short - term projection, with initial values of key variables unmeasurable and unknown, with advancement of multiple, untestable, non-Popper-falsifiable theories, with a quantitative assignment of unduly high statistical confidence levels to non-quantitative statements that are ineluctably subject to very large uncertainties, and, above all, with the now - prolonged failure of TS to rise as predicted (Figures 1, 2), raise questions about the reliability and hence policy - relevance of the IPCC's central projections.