Sentences with phrase «ice loss rates in»

The increase was due almost completely to increased ice loss rates in southern Greenland (Velicogna and Wahr 2006a).

Not exact matches

«West Greenland Ice Sheet melting at the fastest rate in centuries: Weather patterns and summer warming trend combine to drive dramatic ice loss.&raqIce Sheet melting at the fastest rate in centuries: Weather patterns and summer warming trend combine to drive dramatic ice loss.&raqice loss.»

Based on what we know, we can expect the rapid ice loss to continue for a long time yet, especially if ocean - driven melting of the ice shelf in front of Pine Island Glacier continues at current rates,»

They then used the satellite record of Arctic sea ice extent to calculate the rates of sea ice loss and then projected those rates into the future, to estimate how much more the sea ice cover may shrink in approximately three polar bear generations, or 35 years.

By lubricating the bedrock, it will speed the flow of the overlying ice, perhaps increasing the rate of ice - mass loss in West Antarctica.

Glaciologists worldwide use these and other maps in modeling the rate of ice loss in Greenland and projecting future losses.

In 2008 a satellite study based on rates of snowfall and ice movement estimated a loss of 210 cubic kilometers of ice per year — a 59 percent increase in the past decadIn 2008 a satellite study based on rates of snowfall and ice movement estimated a loss of 210 cubic kilometers of ice per year — a 59 percent increase in the past decadin the past decade.

Complementary analyses of the surface mass balance of Greenland (Tedesco et al, 2011) also show that 2010 was a record year for melt area extent... Extrapolating these melt rates forward to 2050, «the cumulative loss could raise sea level by 15 cm by 2050 ″ for a total of 32 cm (adding in 8 cm from glacial ice caps and 9 cm from thermal expansion)- a number very close to the best estimate of Vermeer & Rahmstorf (2009), derived by linking the observed rate of sea level rise to the observed warming.

[7] The IceCon project aims to gain a better understanding of the rate of the loss of ice — now and in the past - from the Antarctic ice sheet in the Dronning Maud Land area, and includes six partners: Université Libre de Bruxelles, Royal Observatory of Belgium, University of Luxembourg, Norwegian Polar Institute, and Aberystwyth University.

Since 1979, winter sea ice extent has decreased 3.2 percent per decade (the loss is much more pronounced in summer at a rate of 13.4 percent per decade).

The rate of release from the tundra alone is predicted to reach 1.5 billion tons of carbon per annum before 2030, contributing to accelerated climate change, perhaps resulting in sustained decadal doubling of ice loss causing collapse of the Greenland Ice Sheet (Hansen et al, 201ice loss causing collapse of the Greenland Ice Sheet (Hansen et al, 201Ice Sheet (Hansen et al, 2011).

This kind of significant change could increase the rate of warming already in progress, affect further sea ice loss in the Arctic and alter shipping access to the Arctic Ocean.

Rates of sea - level rise calculated from tide gauge data tend to exceed bottom - up estimates derived from summing loss of ice mass, thermal expansion and changes in land storage.

IceCon aims to gain a better understanding of the rate of the loss of ice — now and in the past - from the Antarctic ice sheet in the Dronning...

And since you have missed this acceleration you have assumed that the rate will remain at 3.3 mm / year for the rest of this century, despite ongoing observations of increases in ice mass loss in Greenland and parts of Antarctica.

For three particular mismatches — sea ice loss rates being much too low in CMIP3, tropical MSU - TMT rising too fast in CMIP5, or the ensemble mean global mean temperatures diverging from HadCRUT4 — it is likely that there are multiple sources of these mismatches across all three categories described above.

Our modelled values are consistent with current rates of Antarctic ice loss and sea - level rise, and imply that accelerated mass loss from marine - based portions of Antarctic ice sheets may ensue when an increase in global mean air temperature of only 1.4 - 2.0 deg.

Our experiments show a clear threshold in the relationship between the rate of sea - level rise, and the rate of (sea - level contributing) ice - sheet mass loss.

Now, this is why you are not thinking — let's assume that at any particular level of regional temperature, we can expect a certain loss rate — this is reasonable because, as you say, there is a lot of ice in Greenland.

From recent instrumental observations alone we are therefore unable to predict whether mass loss from these ice sheets will vary linearly with changes in the rate of sea - level rise, or if a non-linear response is more likely.

Nevertheless, some caution is in order in interpreting this to mean that current rates of rapid ice loss from West Antarctica represent a long term trend.

The sea ice loss rate seems to be very sensitive to model resolution and has improved in CMIP5 — implicating aspects of the model structure as the main source of the problem.

If you were to take the current rate of ice loss as a starting point, and assume a constant rate of acceleration, then by the end of the century, the annual loss rate would need to reach nearly 6,200 km ³ / yr, or nearly 23 times the current rate, to result in a cumulative 10 % loss.

For Greenland to lose 285,000 km ³ of ice in 89 years, the AVERAGE rate of loss would have to be more than 3,200 km ³ / yr, or nearly 12 times faster than the current loss rate (273 km ³ / yr).

Currently they are reporting on record ice losses in August, when the rate of decline typically decreases (but this year it kept right on melting as if it was July).

8) Accelerated mass loss in Greenland and / or Antarctica, perhaps with another huge ice shelf breaking off, but in any case coupled with another measurable rise in the rate of sea level rise, 9) The Fifth Assessment Report (2012 - 2013) really spelling out what we face with no punches pulled.

Chris, in my amateurish way, I have wondered whether there may be a bit of a slowdown in the rate of ice loss as the oldest ice melts.

IIRC, the limit on mass loss was attributed to the narrowness of passes in the mountains, but if the ice loss is behind the mountains as the ocean reaches beyond them, and mixes salt into the system with tides, then only the flushing of salt and icebergs via meltwater would limit the rate of melt in the (brand new) Greenland Sea.

In 1996, the rate of ice mass loss had increased to 97 gigatonnes per year.

jetfuel, setting aside the different effects of ice in different locations outlined by scaddenp... you are also comparing the antarctic annual volume loss rate to (vague generalizations of) the Canadian annual volume maximum.

The reasonable agreement in recent years between the observed rate of sea level rise and the sum of thermal expansion and loss of land ice suggests an upper limit for the magnitude of change in land - based water storage, which is relatively poorly known.

However, despite near normal rates of ice loss during the month, June 2015 was a relatively warm month (Figure 7) with 925 hPa air temperatures up to 2.5 C higher than average near the North Pole and East Siberian Sea, with even warmer air temperatures in the Kara Sea (up to 4.5 C).

In outline, the model supposes that the rate of change of ice extent has two terms - accumulation proportional to its length, and loss at the grounding line which is proportional to the cross-section area there, which because a constant width is assumed is proportional to the depth of the ice.

But around 2009 there was «a remarkable rate of acceleration» in ice loss, the study says.

Yet the rate of ice loss from these two polar realms, as identified by satellite measurements of the change in gravity of the ice masses, has more than doubled over the last decade.

Ice mass loss is occuring at an accelerated rate in Greenland, Antarctica and globally from inland glaciers.

The rate of release from the tundra alone is predicted to reach 1.5 billion tons of carbon per annum before 2030, contributing to accelerated climate change, perhaps resulting in sustained decadal doubling of ice loss causing collapse of the Greenland Ice Sheet (Hansen et al, 201ice loss causing collapse of the Greenland Ice Sheet (Hansen et al, 201Ice Sheet (Hansen et al, 2011).

In other words — at the estimated current rate of ice loss from the Greenland ice cap it would take 14 000 years for the ice sheet to melt.

Polyak et al. (2010) looked at Arctic sea ice changes throughout geologic history and noted that the current rate of loss appears to be more rapid than natural variability can account for in the historical record.

A new study published in the journal Science revealed that CO2 emissions are accelerating the rate of sea ice loss in the arctic.

The rate of ice mass loss in the Russian Arctic has nearly doubled over the last decade when compared to records from the previous 60 years, a new study shows.

The resulting enhanced loss of summer and winter sea ice resulted in feedbacks, associated with Arctic Amplification, which has raised Arctic air temperatures at a rate twice the global average.

We are seeing an increase in the recent speed of ice loss, when compared to the long - term ice - loss rate,» says lead researcher Whyjay Zheng, a doctoral student in geophysics at Cornell University.

As reported in Remote Sensing of Environment, from 1953 to 2010, the average rate of ice surface loss was 18 centimeters (7.1 inches) per year.

«It is very likely that the rate of global mean sea level rise during the 21st century will exceed the rate observed during 1971 — 2010 for all Representative Concentration Pathway (RCP) scenarios due to increases in ocean warming and loss of mass from glaciers and ice sheets.

Sea ice minimum levels are falling at the rate of 14 % a decade in the Arctic, and polar bears have been feeling the loss.

This has likely delayed further ice loss in these areas, which together with the low SLP over the central Arctic Ocean, accounts in part for the recent decrease in the rate of ice loss seen in Figure 2.

The drop in estimate values between the two first Outlooks reflected in part record ice loss rates observed in June.

Considered in isolation, the reduction in ocean heat transport implies a possible moderation in the rate of Arctic sea ice loss in the coming decade.

However, this is balanced by substantial ice sheet losses on margins especially in West Antarctica as calving rates accelerate.