Sentences with phrase «on glacier mass»

Bradley, R.S. and England, J., 1978: Influence of volcanic dust on glacier mass balance at high latitudes.

In addition to adding mass to a glacier, precipitation has an indirect effect on glacier mass balance by changing the amount of sunlight the glacier absorbs.

Not exact matches

They can block rivers, creating lakes that can later unleash floods, and by depleting glacier mass, they can threaten the flow of meltwater that downstream towns and farms may depend on.

When it's cold enough to form ice shelves that extend over the Antarctic land mass and into the ocean, much of what drops to the seafloor is sand and gravel that the glacier has picked up on its slow march from the continent's ice cap.

This allowed them to calculate the redistribution of mass on Earth's surface due to the melting of the Greenland and Antarctic ice sheets and mountain glaciers, and model the shift in Earth's axis.

The sun and moon tug on the planet, while the drift of continents, changes in ocean currents, and the rebounding of the crust since the retreat of ice age glaciers all shift mass around, altering Earth's moment of inertia and therefore its spin.

The data allowed them to calculate the redistribution of mass on Earth's surface due to the melting of the Greenland and Antarctic ice sheets and mountain glaciers, and the resulting rise in sea level.

The results now published in Environmental Research Letters seem to contradict the data from a satellite mission based on other measuring methods, which indicates a slight increase in mass in the glacier ice for an almost identical period of time.

However, most of the Antarctic glaciers are on land, and rapidly adding new ice shelf material to the floating mass will increase sea level rise.

If a glacier loses mass from enhanced melting, it may start floating farther inland from its former grounding line, just as a boat stuck on a sandbar may be able to float again if a heavy cargo is removed.

And is the current large scale ablation seen on these glaciers due to these glaciers coming to some equilibrium with a warmer world due to coming out of the LIA and response times associated with the large masses involved?

Negative mass balances on tributary glaciers can lead to thinning of the glaciers and ice shelves.

Unlike the great ice sheet of Antarctica, the Greenland ice sheet is melting both on its surface and also at outlet glaciers that drain the ice sheet's mass through deep fjords, where these glaciers extend out into the ocean and often terminate in dynamic calving fronts, giving up gigaton - sized icebergs at times.

Serve small portions to children explaining that the blue is the icy center of a glacier (a mass of ice formed by compacted snow) and the white on top is snow with silt (fine bits of sand and clay) in it.

A highlight of this Canadian Rockies tour is a journey on Icefields Parkway to savor stunning views of alpine meadows, waterfalls, and glacier masses followed by a thrilling ride aboard an Ice Explorer on the Columbia Icefield, the largest expanse of ice in the Canadian Rockies.

Notably, the quote «Mölg and Hardy (2004) show that mass loss on the summit horizontal glacier surfaces is mainly due to sublimation (i.e. turbulent latent heat flux) and is little affected by air temperature through the turbulent sensible heat flux.»

The situation regarding glaciers on Mt. Kenya is probably more complicated than just a question about temperature — changes in precipitation pattern will also affect their mass balance.

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.

That applies not only to the Australian drought, but to all aspects of climate change, whether it be loss of sea ice, loss of glaciers and ice caps, acidification of the oceans, desertification, mass migrations due to sea level rise, and so on.

News articles by The Times, Time, the Associated Press and others capture the basics in two new papers, one on six West Antarctic glaciers that appear to have nothing holding back eventual disappearance, accepted for publication in Geophysical Research Letters, and the other taking a closer look at one of those ice masses, the Thwaites Glacier, posted online today by the journal Science.

Although data are not complete, and sometimes contradictory, the weight of evidence from past studies shows on a global scale that precipitation, runoff, atmospheric water vapor, soil moisture, evapotranspiration, growing season length, and wintertime mountain glacier mass are all increasing.

My hunch is the few large glaciers draw from the central ice mass through «gateways» and the many smaller glaciers instead form mostly from snowfall on the outside of the ring of mountains around the icecap.

So I had to back up the story of my trip to Alaska with satellite data on sea ice, and I had to justify my pictures of disappearing glaciers in the Andes with long - term records of mass balance of mountain glaciers.

The contribution from glaciers and ice caps (not including Greenland and Antarctica), on the other hand, is computed from a simple empirical formula linking global mean temperature to mass loss (equivalent to a rate of sea level rise), based on observed data from 1963 to 2003.

For 30 years, he has been clambering in, on, and around the mass of ice, studying the glacier's anatomy and behavior as closely as if it were a living creature.

The overall global glacier mass balance trend is shown on the National Snow and Ice Data Center (NDIS) graph here.

SLR by 2100 is more likely to come from ice mass loss from West Antarctica (WAIS) where warm ocean currents are already melting ice at glacier mouths and attacking areas of the WAIS resting on the seabed.

In commenting on their findings, the three researchers write that «the large number of stable glacier termini and glacier advances is influenced by positive glacier mass balances in the central Karakoram during the last decade,» citing Gardelle et al. (2012, 2013) and Kaab et al. (2012), which they indicate is «induced by increasing winter precipitation and decreasing summer temperatures since the 1960s,» citing Archer and Fowler (2004), Williams and Ferrigno (2010), Bolch et al. (2012), Yao et al. (2012) and Bocchiola and Diolaiuti (2013).

We quantify sea - level commitment in the baseline case by building on Levermann et al. (10), who used physical simulations to model the SLR within a 2,000 - y envelope as the sum of the contributions of (i) ocean thermal expansion, based on six coupled climate models; (ii) mountain glacier and ice cap melting, based on surface mass balance and simplified ice dynamic models; (iii) Greenland ice sheet decay, based on a coupled regional climate model and ice sheet dynamic model; and (iv) Antarctic ice sheet decay, based on a continental - scale model parameterizing grounding line ice flux in relation to temperature.

... tba... For additional information on the status of the glacier and on data relating to annual mass balance and other measurements, visit the WGMS Fluctuations of Glaciers Browser.

These glaciers have gradually slowed in the following years, but calving and mass loss from other glaciers on the southeastern Greenland coast and the western coast continues.

However, most of the Antarctic glaciers are on land, and rapidly adding new ice shelf material to the floating mass will increase sea level rise.

If PDO is positive and ENSO is negative glacier mass balance will be negative on South Cascade Glacier.

The continued deterioration of glaciers will also have inevitable consequences in the high basins — not only on water resources, but also undoubtedly on ecosystems connected to ice masses.

This narrow range indicates that late in the ablation season the density of snowpack on North Cascade glaciers is uniform, and need not be measured to determine mass balance.

Figure 7 illustrates the long term impact of declining snowpack on North Cascade glacier mass balance.

Annual net balance on eight North Cascades glaciers during the 1984 - 1994 period has been determined by measurement, of total mass loss from firn and ice melt and, of residual snow depth at the end of the summer season.

The North Cascades National Park Service began measuring mass balance on four glacier in 1993 (Pelto and Riedel, 2001).

To identify the impact of sampling density on determination of a glacier's annual mass balance, the North Cascade Glacier Climate Project utilized a varying density of measurements to determine annual mass balance on Columbia Glacier, Washington and Lemon Creek Glacier, Alaska.

The map shows the distribution of glaciers on the European continent, Svalbard, Iceland and in the periphery of the Greenland Ice Sheet together with the locations of glaciers with long - term mass change measurements.

Equilibrium line - The boundary between the region on a glacier where there is a net annual loss of ice mass (ablation area) and that where there is a net annual gain (accumulation area).

«(F) the cryosphere, including effects on ice sheet mass balance, mountain glacier mass balance, and sea - ice extent and volume;

IceBridge's Alaska flights have found that glaciers across the state are declining rapidly, with those terminating on land and in lakes losing mass faster than expected.

Both the observations of mass balance and the estimates based on temperature changes (Table 11.4) indicate a reduction of mass of glaciers and ice caps in the recent past, giving a contribution to global - average sea level of 0.2 to 0.4 mm / yr over the last hundred years.

Since ice can sublime and we know from the discussions on glaciers that they can grow or shrink with percipitation, simple mass would not be appropriate.

Van de Wal and Wild (2001) find that the effect of precipitation changes on calculated global - average glacier mass changes in the 21st century is only 5 % of the temperature effect.

For information on the status of the glacier and on data relating to annual mass balance and other measurements, visit the WGMS Fluctuations of Glaciers Browser.

If you are focused on simple thermodynamic reasoning, don't forget about increased snowfall from warmer ocean temperatures, that can temporarily (for say a few thousand years) increase mass balance of the continental glaciers.

The earlier study reported that the region was losing three times this amount of ice, based on measurements of glacier thinning and mass loss determined from other satellite measurements.

... tba... For information on the status of the glacier and on data relating to annual mass balance and other measurements, visit the WGMS Fluctuations of Glaciers Browser.