Sentences with phrase «loss of ice since»

Aerial mapping of Kilimanjaro's summit in February 2000 revealed a 33 % loss of ice since the last map in 1989 and an 82 % decline since 1912, says geologist Lonnie Thompson of Ohio State University's Byrd Polar Research Center in Columbus.

Not exact matches

Since 2003 the GRACE satellites had measured ice loss through variations in the earth's gravitation but only at the fuzzy resolution of hundreds of kilometers.

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 new results reveal that the pattern of modern ice loss is similar to that which has prevailed since the end of the last ice age.

Totten Glacier, one of East Antarctica's largest ocean outlets, is already thinning — an ominous sign, since this single glacier drains enough ice to raise the sea level more than all of West Antarctica's ice loss would.

Increased melting of the Greenland Ice Sheet and other ice losses worldwide have helped to move the North Pole several centimeters east each year since 2Ice Sheet and other ice losses worldwide have helped to move the North Pole several centimeters east each year since 2ice losses worldwide have helped to move the North Pole several centimeters east each year since 2005

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).

But from an email conversation with Francis, Vavrus, and several other atmospheric scientists this week, it became clear that there may be more questions than answers at this point, given the large amount of natural variability that affects winter weather patterns, and the very short observational record of how the atmosphere responded to extreme losses of sea ice (only five winters of records since 2007).

This increase in demand — up 58 % since 2009 — combined with antiquated infrastructure has resulted in an increasing number of brownouts and blackouts, such as the one resulting from the 2013 ice storm that caused 27 deaths, loss of power to over a million residents and more than $ 200 million in damages.

Remember that Rochester renters insurance covers losses due to weight of snow and ice, which is important since the city roughly shares a latitude with Detroit and Milwaukee, and has the sort of winters you would expect given that fact!

The increase in demand — up 58 % since 2009 — combined by antiquated infrastructure has resulted in an increasing number of brownouts and blackouts, such as the 2013 ice storm / power outage that resulted 27 deaths, loss of power to over a million residents and over $ 200 million in damages.

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.

However, if the loss of Arctic Sea ice has significantly changed global atmospheric circulation patterns, then we are dealing with a different system that has only been in existence since 2007, and we do not know how often to expect crop failures.

Since the actual loss of ice is similar in magnitude to this figure, I conclude that a 1 watt / sq meter forcing is «big enough» to produce the melting actually seen, whereas geothermal energy is much too small.

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.»

2) What relevance are small areas of open water in 2000 (or earlier) given the loss of over 2million km ^ 2 perrenial ice since then * (on a 3.6 M km ^ 2 baseline)?

Here's an interesting thought for the ice experts, maybe Andy could pick this up, since he's done a very decent job of following up on my question: I've read suggestions that increased sea emissivity from the Arctic waters would gain relative to the loss of albedo from increasingly ice - free seas.

Mercer further commented that the loss of ice shelves on the Antarctic Peninsula, as has since been observed, would be an indicator that this process of ice sheet loss due to global warming was underway.

So we see a long term trend of accelerating ice mass loss since the 1970s.

Since 2008, ice loss from West Antarctica's unstable glaciers doubled from an average annual loss of 121 billion tons of ice to twice that by 2014, the researchers found.

The ongoing flux of mantle material into areas which have experienced large - scale ice - mass loss since the LGM looks like mass gain to GRACE.

That conclusion seems much closer to reality but may be unwelcome in some circles since the implication is that, if true and with SLR now at 3.4 mm / annum, loss of land - based ice must be considerably greater than hitherto reported.

Monckton stated that «a largely unreported gain in Antarctic sea ice since 1979 almost matches the widely reported loss of Arctic sea ice».

The one exception to this pattern of accelerating ice loss is Antarctic sea ice which has shown long term growth since satellites began measurements in 1979.

Because the inflow of warm water has been waning since the late 1990s, it suggested that accelerated loss of ice would soon wane as well.

What is unclear here is the period on which the «normal statistics» is computed, since the past data are obviously much less known, with a considerable loss of variance (the «constant» ice minima are obviously wrong).

Ainley believed the DuDu colony had been unable to recover since 1980 because global warming had caused a thinning of the sea ice resulting in a premature loss of sea ice that was drowning chicks.

-LSB-...] In fact, the global sea - ice record shows virtually no change throughout the past 30 years, because the quite rapid loss of Arctic sea ice since the satellites were watching has been matched by a near - equally rapid gain of Antarctic sea ice.

This week in the journal Nature, Csatho writes a «News and Views» analysis that comments on the latest research in this area: A new study in Nature by Kristian K. Kjeldsen, Niels J. Korsgaard, Kurt H. Kjær and colleagues, who used aerial photographs, remote - sensing observations and geological evidence to estimate the Greenland Ice Sheet's mass loss during three time periods since the start of the 20th century: 1900 - 83, 1983 to 2003 and 2003 - 10.

Since current ice melt data could indicate variable climate trends and aren't necessarily part of an accelerating trend, the study warned that predictions of future sea - level rise should not be based on measurements of glacial loss» Daily Mail.

It is arguably one of the most advanced of the seven in its impacts, with a 2011 GRL report putting its warming effect as equivalent to around 30 % of atmospheric anthro - CO2, and the recent report putting albedo loss from arctic sea - ice decline since»79 as providing a forcing equivalent on average to that from 25 % of the anthro - CO2 levels during the period.

A lack of insulating sea ice vastly increases energy loss since open water loses much more energy by convection and latent heat loss.

Most have barely a clue as to the actual rate of increase in MSL or the % loss of the Antarctic Ice Sheet or the actual temperature increase since the 1860 or 1978.

«But since the 1960's the mountain has seen more even loss of ice in shaded and sun - exposed ice,» he said.

So I wonder since it is all quiet about this year's ice volumes that possibly the avg arctic ice volume has recovered most of the 5500 gigatonnes of avg loss since 1979.

This work showed that the rate of ice loss in Antarctica has doubled since 2010, when compared to the period from 2005 to 2010.

Air temps in arctic are almost precisely the same as the average for the past 50 years — So it is unlikely air temps have created ice loss — BUT CONVERSELY — the increased open arctic water SHOULD be affecting the arctic air temp - but is not (large expanses of 1 degree C arctic water make it difficult for air temps to drop to minus ten C — but since that is what is happening, then in fact there must be much more cold air around to create «normal» arctic temps for this time of the year)

Since this effect would not depend on slow rates of thermal diffusion though frozen sediments, but instead by a simple loss of ice, which could occur more quickly, such hydrates might be more vulnerable to destabilization than hydrates buried under permafrost.

And the decline has accelerated, becoming far more dramatic, since about the year 2000, leading to annual average sea ice loss of around three million square kilometers.

The Sierra Nevada's mountain peaks have risen measurably since 2012 as the Earth's crust rebounds from the net loss of 63 trillion gallons of water — an amount equivalent to the entire annual ice melt of the Greenland Ice Sheice melt of the Greenland Ice SheIce Sheet.

What the report says about Alaskan glaciers and climate change: The collective ice mass of all Arctic glaciers has decreased every year since 1984, with significant losses in Alaska.

He figured that since humans are mostly made of water, all we have to do to fix the loss of land - based ice is to offset it with a much larger human population.

Fluctuations in the mass of the Greenland and Antarctic ice sheets are of considerable societal importance as they impact directly on global sea levels: since 1901, ice losses from Antarctica and Greenland, alongside the melting of small glaciers and ice caps and thermal expansion of the oceans, have caused global sea levels to rise at an average rate of 1.7 mm / yr.

Mean sea level (MSL) evolution has a direct impact on coastal areas and is a crucial index of climate change since it reflects both the amount of heat added in the ocean and the mass loss due to land ice melt (e.g. IPCC, 2013; Dieng et al., 2017) Long - term and inter-annual variations of the sea level are observed at global and regional scales.

Hence: http://www.nature.com/nclimate/journal/v4/n4/full/nclimate2161.html, and Greenland's ice loss has doubled since the early 2000s http://www.bbc.com/news/science-environment-28852980 and its ice melt is accelerating http://www.rtcc.org/2014/04/14/greenland-ice-melt-accelerating-say-scientists/) An extremely comprehensive study in 2012 found that «the pace of ice loss from Greenland is extraordinary, with nearly a five-fold increase since the mid-1990s, http://goo.gl/rkHa9J Changes in rates of increase are significant.

This pattern is supportive of sea ice loss in the Pacific sector of the Arctic as suggested by the sea ice extent analysis in Figure 2, and has been an important sea ice loss climate pattern since 2005, especially in summer 2007.

Accelerated environmental changes can already be seen in the loss of Arctic sea ice and bigger wildfires since 1980, the authors said.

Researchers at the University of Texas, Austin, report that increased melting of the Greenland ice sheet — and to a lesser degree, ice loss in other parts of the globe — helped to shift the North Pole several centimeters east each year since 2005.

Accelerating mass loss from Antarctic and Greenland ice sheets since 1992 [Rignot et al., 2011] is an additional source of the recent sea level acceleration.»

The loss of sea ice very likely accelerated since 1993.