Going along with that is some new research showing that Greenland's past
ice melt season was exceptionally long, with some areas having an extra 50 days of melting in 2010.
More on Global Climate Change Antarctica's Pine Island Glacier Melting Four Times Faster Than 10 Years Ago Greenland's 2010
Ice Melt Season Up To 50 Days Longer Than Normal
Contributing to the longer than normal
ice melt season were below normal snowfall, earlier and longer exposure of bare ice (which is darker than snow and absorbs more solar radiation).
IceBridge is flying out of Barrow, Alaska, during sea
ice melt season to capture melt pond observations at a scale never before achieved.
The 2015 Arctic sea
ice melt season was a little lower than 2013 and 2014, but sea ice volume continues to increase.
The vast ice sheet on the island holds enough water to raise global sea levels by 7.36 meters (24.15 feet) were it all to melt, and
the ice melt season of 2012 gave notice that an epic melting of the Greenland Ice Sheet may be underway.
According to the press release: «This trio of images shows changes between 1979 and 2007 in the average date of melt onset in the spring (left), the first autumn freeze (center), and the total average increase in the length of the Arctic sea
ice melt season.
Thursday's toasty reading in Nuuk marks the second exceptionally warm temperature recorded in southwest Greenland since April, when
the ice melt season began about a month prematurely.
This year's arctic
ice melt season is generating extraordinary interest.
This year we have seen the Arctic sea -
ice melting season once again reported by contrarians as a recovery, although as the graph below, from the National Snow and Ice Data Center, clearly shows, there have been a number of «recoveries» in previous years too.
What seems likely to be the most interesting period of the 2017 Arctic sea
ice melting season is upon us!
Not exact matches
I hope this
ice cream helps
melt away the upcoming hot summer nights and gives you a delicious treat that you can enjoy all
season long!
The
melting tip of the
ice burg they need to be worried about is the fact that people who are buying the whole
season package to get the big games can't even give away these other tickets to family.
Satellite data show that, between 1979 and 2013, the summer
ice - free
season expanded by an average of 5 to 10 weeks in 12 Arctic regions, with sea
ice forming later in the fall and
melting earlier in the spring.
Operation IceBridge, NASA's airborne survey of polar
ice, is flying in Greenland for the second time this year, to observe the impact of the summer
melt season on the
ice sheet.
«This knowledge about how Arctic sea
ice melts over the course of the summer
season will be valuable in further research,» he says.
Box pointed to nearly
ice - sheet - wide
melting on Greenland, with extensive surface
melting documented for first time at the highest elevations of
ice sheet, and the longest
melt season since satellite observations began in 1979.
The reason: until the end of the
melting season the fate of the
ice is ultimately determined by the wind conditions and air and water temperatures during the summer months.
Many of the forecasts analyzed in the study focused on the state of the
ice cover prior to the summer
melt season.
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.
Some analyses have hinted the Arctic's multiyear sea
ice, the oldest and thickest
ice that survives the summer
melt season, appeared to have recuperated partially after the 2012 record low.
But according to Joey Comiso, a sea
ice scientist at Goddard, the recovery flattened last winter and will likely reverse after this
melt season.
Starting next week, NASA's Operation IceBridge, an airborne survey of polar
ice, will be carrying science flights over sea
ice in the Arctic, to help validate satellite readings and provide insight into the impact of the summer
melt season on land and sea
ice.
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.
NSIDC scientists said there was a lot of thin
ice at the beginning of the
melt season, because thinner
ice does not take as much energy to
melt away, this may have also contributed to this year's low minimum extent.
But over the past decades, the
melt season has grown longer and the average extent of Arctic sea
ice has diminished, changing the game for many Arctic marine mammals — namely beluga, narwhal and bowhead whales; ringed, bearded, spotted, ribbon, harp and hooded seals; walruses; and polar bears.
A study examined three different factors: warmer - than - usual surface atmosphere conditions (related to global warming); sea -
ice thinning prior to the
melting season (also related to global warming); and an August storm that passed over the Arctic, stirring up the ocean, fracturing the sea
ice and sending it southward to warmer climes.
Research led by Eric Post, a professor of biology at Penn State University, has linked an increasingly earlier plant growing
season to the
melting of arctic sea
ice, a relationship that has consequences for offspring production by caribou in the area.
In addition, risks of negative consequences such as increased droughts and the complete
melting of
ice caps in Greenland and Antarctica definitively outweigh any potential positives, such as longer growing
seasons in countries such as Canada and Russia.
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.
Climate change is pushing temperatures up most rapidly in the polar regions and left the extent of Arctic sea
ice at 1.79 million square miles at the end of the summer
melt season.
Even so much that there is a cooling temperature trend in winter, large enough to refreeze almost all
ice that was
melted in the other
seasons.
The 2015
melt season will start with a record low maximum
ice extent.
The puddles are most abundant in mid-summer when the sunlight is strongest, and by mid-September when the
ice meltback was the strongest, the
melting season was largely over.
In the Antarctic, where the summer
season just wrapped up, rapid
ice melt led to the lowest sea
ice minimum ever recorded for the area.
Additionally, it is postulated that the warming climate will likely extend
melt seasons, leading to increases in biological activity and thus contributing further to the darkening of glaciers and
ice sheets (Benning et al., 2014).
This report describes simulations of future sea -
ice extent using the NCAR CCSM3, which point to the possible complete loss of sea -
ice at the end of the
melt season as soon as 2040.
The lowest extent on record came during the remarkable summer
melt season of 2012, fueled in part by summer storms that moved
ice into warm waters.
The sea
ice that caps the Arctic Ocean naturally waxes and wanes with the
seasons, reaching its maximum area at the end of winter, before the reemergence of the sun in spring starts off the
melt season.
«Sea
ice status now; projection for rest of
melt season, implications to extreme weather events and global food supply.»
What the scientists think happened was that the traditionally older, thicker
ice around Greenland and the Canadian archipelago «just didn't
melt away as much as it usually would» during the cooler summer conditions, «and it kind of just remained over the summer
melt season,» Tilling said.
Meanwhile, in Antarctica, sea
ice has already reached its minimum extent following the summer
melt season.
The volume of sea
ice left at the end of the summer
melt season seems to vary more from year to year than had perhaps been previously appreciated; after declining for several years, sea
ice volume shot up after the unusually cool summer of 2013, the data revealed.
Catastrophic
ice - shelf collapsed tend to occur after a relatively warm summer
season, with increased surface
melting [12].
This week, the institute announced that Greenland's ablation
season, the period when its
ice sheet loses more mass from
melting along its edges than it does from snowfall in its interior, started on June 6.
That puts
ice at a disadvantage during the upcoming
melt season because it tends to be thinner and more prone to
melting.
For example, the 2012 record minimum came during the remarkable summer
melt season of 2012 and was fueled in part by summer storms that moved
ice into warm waters.
When it comes to the rest of 2016 and the coming summer and fall
season when
ice melts across the Arctic and reaches its lowest extent, he says, «we are starting out in a deep hole.»
Emerging from a winter that has had staggeringly warm Arctic temperatures, scientists monitoring the vast Greenland
ice sheet announced Tuesday that it is experiencing a record - breaking level of
melt for so early in the
season.
The 2012
melt season, according to the National Snow and
Ice Data Center, experienced
melting even at mountainous heights over a mile into the sky atop Greenland.