If the rate of melt does note slow considerably, it looks like this year will be on track to equal, or even exceed last
years record melt.
Not exact matches
The
record is plotted as the percent of each
year's layer represented by refrozen
melt water.
This
year's Arctic sea ice cover currently is the sixth - lowest on modern
record, a ranking that raises ongoing concerns about the speed of ice
melt and the effects of ice loss on global weather patterns, geopolitical fights, indigenous peoples and wildlife, scientists said yesterday.
2016 experienced the earliest
melt, the latest onset of snow in autumn, and the longest snow - free season in 115
years of
record - keeping — about 45 percent longer than the average over the previous four decades.
The past several
years, as well as the current one, have seen temperature and
melting records set across Greenland.
In 30
years of satellite observations, the greatest extent of surface
melt was
recorded a decade ago, when about 75 per cent of the surface was wet.
Once the LGM came to a close, however, the climate began to warm, the sea level rose and ice masses started
melting away, allowing the Native American founder population to enter into North America nearly 15,000
years ago, according to the genetic
record.
NSIDC will issue a formal announcement at the beginning of October with full analysis of the possible causes behind this
year's ice conditions, particularly interesting aspects of the
melt season, the set up going into the winter growth season ahead, and graphics comparing this
year to the long - term
record.
During a
record melting jag this past summer, the Greenland ice sheet lost 552 billion tons (19 billion tons lower than the previous low), and the volume of sea ice fell to half the volume it had four
years ago.
This
year's
record low sea ice maximum extent might not necessarily lead to a new
record low summertime minimum extent, since weather has a great impact on the
melt season's outcome, Meier said.
«There are already places in the Andes, for instance, where
records of the last 30 to 40
years have disappeared because of surface ice
melting,» Rignot says.
But the 14 -
year record used in the study is still somewhat short to infer a definitive link between wind - driven upwelling and ice shelf
melt, he says.
Recent studies have proposed that the bathymetric fabric of the seafloor formed at mid-ocean ridges
records rapid (23,000 to 100,000
years) fluctuations in ridge magma supply caused by sealevel changes that modulate
melt production in the underlying mantle.
According to climate
records stretching back a century, southern Greenland has warmed three degrees Celsius in just the past 20
years, driving
melting that may help lubricate glacial flow along the bedrock, the two speculate.
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.
As Arctic sea ice
melts, an underwater
recording project reveals that the submerged ecology is undergoing change, with humpbacks and killer whales staying north later in the
year.
But this
year, a big spring meltdown in October and November suddenly reversed that trend and has led to continued
record low sea ice levels as the summer
melt season progressed.
What sets this
melt season apart from 2007 is that unlike during the previous
record year, the weather conditions throughout the
melt season were not particularly favorable for
melting.
In previous
years, Antarctic sea ice hit
record highs, potentially due to changing ocean conditions linked to the
melting of land - bound glaciers.
«The ice core
record ends about 450
years ago, so the modern
melt rates in these cores are the highest of the whole
record that we can see,» Osterberg said.
This continues recent trends, ever since the previous
record melt year of 2007.
Just last
year, for example, the UK had its second - coldest March since
records began, prompting the Met Office to call a rapid response meeting of experts to get to grips with whether
melting Arctic sea - ice could be affecting British weather.
The fund has a strong
record, 4.5 % annual returns over the past 17
years and a maximum drawdown of just 4.25 % (during the 2008 market
melt), a broad and stable management team and the resources of large analyst corps to draw upon.
Second, there is nothing whatsoever «misleading» about the title «Greenland Meltdown», since the RealClimate article in question discussed «the
record - breaking 2010 surface
melt area in Greenland» and the fact that newly reported data shows that 2011 «was either the 3rd or 6th
year in the rankings» of Greenland surface
melt.
The
melting increased by about 30 percent for the western part of Greenland from 1979 to 2006, with
record melt years in 1987, 1991, 1998, 2002, 2005 and 2007.»
Will it level off before exceeding last
year's
record melt?
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).
It's still possible to beat last
year's
record low extent (given the current high
melt rate), but probably not likely.
A 7 °F increase since 1991 contributed to another
record ice
melting year, 10 % more than the previous one set in 2005.
I've sometimes thought that global cataclysms like the largest volcanic eruptions would disrupt the glacial
records by many
years, like Oruanui eruption c. 26500bp, as these would induce unrecorded behavior in weather and other things, f.e. the huge ash deposits might decrease the albedo so much a local
melting event happens.
I don't think winds will be as important a factor as in
years past since it looks like all that would have to be done to achieve a
record minimum is
melt the first
year ice.
If the ice
melt is due to global warming, why have recent
records shown that the warming process stopped about 7
years ago and we are now slightly cooling?
As I understand it, the sea level
record indicates that the
melting of the great ice sheets covering parts of the NH began some 16k
years ago.
That said, the preconditioning is so strong that even with cloudy weather it looks likely that the ice will fall below the 2005 level and be the second lowest on
record, even if it doesn't exceed the
record melt last
year.
This
year's sea ice
melt is not as bad as last
year's
record - shattering
melt.
it's one thing for
records to creep in every couple of
years, but this summer's
melting season was... «spectacular» isn't quite the right word....
The sea ice at the end of this summer's period of
melting is predicted to match or beat the all - time
record low of 2007 and one research group at the University of Bremen in Germany has already announced that the ice this
year has already set a
record.
In recent
years, Greenland's ice has been
melting more and flowing faster into the sea — a
record amount of ice
melted from the frozen mass this summer, according to recently released data — and Earth's rising temperatures are suspected to be the main culprit.
And what about the fact that weather
records show the weather has been growing warmer over the
years — so warm in fact that certain glaciers are
melting fast enough to raise the level of the world's oceans?
«This makes it more likely than not that within the next five to 10
years we will witness further
record Greenland
melt events like in 2012 and 2015.»
man: [slightly irritatedly and with exaggeratedly clear accent] The forecast for Atlantic hurricanes has been lowered again, glaciers were reported to be
melting in 1922, and the hottest
year on
record wasn't 1998, it was 1934.
Although this century kicked off with the hottest decade on
record, 2010 was the hottest
year and in 2011 the Arctic may have broken both the summer and the winter
melting record, there has still been heat missing: the rise in global temperatures is smaller than what one would expect from the rise in greenhouse gas concentrations, which — despite UNFCCC attempts to tackle climate change since Kyoto 1997 and Copenhagen 2009 — has even accelerated.
The US government spends $ 2.5 billion per
year on research that focuses on carbon dioxide, ignores powerful natural forces that have always driven climate change, and generates numerous reports and press releases warning of
record high temperatures,
melting icecaps, rising seas, stronger storms, more droughts and other «unprecedented» crises.
The Arctic's sea ice pack thawed to its third - lowest summer level on
record, up slightly from the seasonal
melt of the past two
years but continuing an overall decline symptomatic of climate change, U.S. scientists said on Thursday.
Scientists say the
record was all the more striking as 2007 had near perfect climate patterns for
melting ice, but that the weather this
year was unremarkable other than a storm in early August.
I must point out that this particular section generally holds info up to about 2010 ~ and so doesn't directly mention all the additional weight of scientific info in the last five
years [i.e. all the newer «hot
year» global
records and even faster Ice
Melt and sea - level rise].
[1] The US National Snow and Ice Data Center (NSIDC) uses satellite data to provide a daily
record of Arctic sea ice cover and the rate of
melting compared to an average period and specific past
years.
Still, they indicate that some areas of the ocean are heating up especially fast, such as the Arctic Ocean — which this
year had its lowest winter ice
year on
record — and is absorbing much more solar energy as
melting ice cover exposes new dark surfaces.
The Greenland ice sheet is poised for another
record melt this
year, and is approaching a «tipping point» into a new and more dangerous
melt regime in which the summer
melt area covers the entire land mass, according to new findings from polar researchers.
This indicates that the ice sheet is absorbing more energy than normal, potentially leading to another
record melt year — just two
years after the 2010
record melt season.