Sentences with phrase «recent ice loss»

The study found that, based on recent ice loss rates and the movement of the Thwaites Glacier in West Antarctica, as well as computer model projections, «early - stage collapse has begun.»

Then disprove natural variability for recent ice loss.

Decadal and multidecadal variations have occurred in some regions, but their magnitudes are smaller than that of the recent ice loss.

BC does have an effect, but BC inventories have been decreasing, so to the extent that BC contributes to melting, the effect is counter to the recent ice loss accelleration.

Recent ice loss was most pronounced in the Chukchi Sea, northwest of Alaska.

While satellite measurements and climate models have detailed this recent ice loss, there are far fewer direct measurements of melt collected from the ice sheet itself.

Not exact matches

«The loss of sea ice in the Arctic and changes to heat storage will lead to changes in weather patterns that could bring extreme heat and cold events to the continental United States similar to those seen in recent years, and possibly even more intense.»

Scientific observations show that in the Arctic, warming temperatures have led to a 75 % loss in sea ice volume since the 1980s, and recent reports suggest the Arctic Ocean will be nearly free of summer sea ice by 2050, said Sullivan.

The reasons for this loss of material and subsequent tail in active asteroids are unknown, although there are several theories such as recent impacts or sublimation from solid to gas of exposed ices.

In comparison, global sea levels are rising by about 3 millimetres a year, and a recent study estimated that one - third of that comes from ice loss in Antarctica and Greenland.

The results do suggest however that if sea ice loss continues as it has over recent decades, the risk of wet summers may increase.

The recent string of record - low winter maximums could be a sign that the large summer losses are starting to show up more in other seasons, with an increasingly delayed fall freeze - up that leaves less time for sea ice to accumulate in winter, Julienne Stroeve, an NSIDC scientist and University College London professor, previously said.

However, the simulations indicate that the sea - ice driven precipitation changes resemble the global rainfall patterns observed during that drought, leaving the possibility that Arctic sea - ice loss could have played a role in the recent drought.

The recent drought is also outside the study's scope because the researchers focused on potentially larger losses in sea ice than have occurred to date.

Dr Ian Joughin at the University of Washington, author of a recent study simulating future Antarctic ice sheet losses added: «This study does a nice job of revealing the strong thinning along the Amundsen Coast, which is consistent with theory and models indicating this region is in the early stages of collapse.»

A recent study found that emissions of carbon dioxide equivalent to that from a single transatlantic flight translates to a loss of 30 square feet of sea ice.

The estimates of ice loss also helped them calculate the amount of sea level rise contributed by the ice sheet prior to 1990 — a number missing from the most recent Intergovernmental Panel on Climate Change report because of the lack of direct observations.

Global warming - related Arctic sea ice loss may be contributing to snowier winters in parts of the Northern Hemisphere, according to a recent study published in the Proceedings of the National Academy of Sciences.

Worldwide, small ice caps and glaciers have reacted particularly dynamically to worldwide increases in temperatures9 - 11, and it has been proposed that the volume loss from mountain glaciers and ice caps like these is the main contributor to recent global sea - level rise12.

Other recent research has also tied the loss of polar ice to subtle changes in the Earth's rotation, suggesting that these losses can slow the planet's spin, in addition to shifting the location of the pole itself.

Our results thus show that, indeed, recent decades in West Antarctica, which have been characterized by very rapid warming, and very rapid loss of ice from the West Antarctic Ice Sheet, are highly unusuice from the West Antarctic Ice Sheet, are highly unusuIce Sheet, are highly unusual.

The lag between decreases in sea ice extent during late summer and changes in the mid-latitude atmospheric circulation during other seasons (when the recent loss of sea ice is much smaller) needs to be reconciled with theory.

The Boundary Layer Response to Recent Arctic Sea Ice Loss and Implications for High - Latitude Climate Feedbacks, Kay et al., Journal of Climate, 2010

Much of the recent sea ice loss is attributed to warmer sea surface temperatures with southerly wind anomalies a contributing cause [Francis and Hunter, 2007; Sorteberg and Kvingedal, 2006], with thermodynamic coupling leading to associated increases in atmospheric moisture.»

Good recent articles in the Guardian and at ClimateCentral on Arctic ice modeling and on Arctic ice loss effects on weather.

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.

re: «These numbers reflect the FACT that EXPERTS (& PROFESSIONAL TRUTH TELLERS in SLR / Ice loss) have become more pessimistic about sea - level rise in recent years...» — Sept 2013 AR5 WGI does NOT reflect this FACT yet was published 8 weeks ago.

The lag between decreases in sea ice extent during late summer and changes in the mid-latitude atmospheric circulation during other seasons (like autumn and winter, when the recent loss of sea ice is much smaller) have been demonstrated empirically, but have not been captured by existing dynamical models.

Although a recent downward trend in coverage is clearly visible by naked eye inspection, Goddard invites us to believe there has ``... been no net gain or loss of polar sea ice since records began.»

Two thirds of ice loss appear to be from underneath, according to recent research.

The net loss in volume and hence sea level contribution of the Greenland Ice Sheet (GIS) has doubled in recent years from 90 to 220 cubic kilometers / year has been noted recently (Rignot and Kanagaratnam, 2007).

The study, being published in Geophysical Research Letters, also looked back at recent ice behavior and concluded that «internal variability explains approximately half of the observed 1979 — 2005 September Arctic sea ice extent loss.»

In recent years, the amount of ice replaced in the winter has not been sufficient to offset summer ice losses.

Rignot et al., Recent Antarctic ice mass loss from radar interferometry and regional climate modelling, Nature Geoscience 1, 106 — 110 (2008)

Here is what I understand of what they are saying: — In recent years the Arctic has been experiencing much warmer than usual temperatures and unusual loss in sea ice.

From recent research, I would suggest that this is entirely plausible; I could cite several examples of substantial increases (runoff, glacier melt, precipitation, sea - ice loss) which, collectively, amount to a real net increase in the Arctic freshwater budget.

The report itself states that this ice loss is due to a recent acceleration of flow, and that in 2005 it was already higher, and that in future the numbers could be several times higher — or they could be lower.

Recent papers with a direct bearing on this issue: «Accelerated Arctic land warming and permafrost degradation during rapid sea ice loss» David Lawrence, Andrew Slater, Robert Tomas, Marika Holland, and Clara Deser Geophysical Research Letters, June 13, 2008 (UCAR press release)

For example, recent results from the Met Office do show that there is a detectable human impact in the long - term decline in sea ice over the past 30 years, and all the evidence points to a complete loss of summer sea ice much later this century.

It is noted that the mass loss of Antarctica is mostly or entirely due to recent changes in ice flow.

It's clear to a range of scientists that the enormous loss of old, thick ice carried on currents from the Arctic out past Greenland into the Atlantic Ocean in recent years is a major factor that has led to sharp summer melting.

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.

443 (21 September 2006), pp. 329 — 31; S. B. Luthke et al., «Recent Greenland Ice Mass Loss from Drainage System from Satellite Gravity Observations,» Science, vol.

In a recent post Accelerating ice loss from Antarctica and Greenland, we saw that ice loss from Greenland has been accelerating sharply over the last 9 years.

«Recent Antarctic Ice Mass Loss from Radar Interferometry and Regional Climate Modelling.»

Specifically «While natural chaotic variability remains a component of mid-latitude atmospheric variability, recent loss of Arctic sea ice, with its signature on mid-latitude atmospheric circulation, may load the dice in favor of snowier conditions in large parts of northern mid-latitudes.»

Moreover, recent studies suggest that ice sheet loss is accelerating and that future dynamics and instability could contribute significantly to sea level rise this century.

«Recent Greenland Ice Mass Loss by Drainage System from Satellite Gravity Observations.»

The ice mass loss observed in this research was a change from the trend of losing 113 ± 17 gigatons per year during the 1990s, but was smaller than some other recent estimates (Luthcke et al. 2006).

In more recent years, even as forecasts of global sea - level rise have been notched up, most projections have not taken into account the possibility of a significant, near - term ice loss from the West Antarctic.