I
have to ask the question as to why they give so much attention to the
Greenland ice melt as shocking as it is.
I
have to conclude they are ignoring sea ice because it has an
immediate effect as opposed to the melting of the Greenland ice sheet
which gives rise to sea level rise over a longer period of time.
Abrupt
climate change is still taboo,
Greenland's
Summer Heat Breaks Records as 440 Billion Tons of Ice Expected to
Disappear
20
August, 2019
(HELHEIM
GLACIER, Greenland) — This is where Earth’s refrigerator door is
left open, where glaciers dwindle and seas begin to rise.
New
York University air and ocean scientist David Holland, who is
tracking what’s happening in Greenland from both above and below,
calls it “the end of the planet.” He is referring to geography
more than the future. Yet in many ways this place is where the
planet’s warmer and watery future is being written.
It
is so warm here, just inside the Arctic Circle, that on an August
day, coats are left on the ground and Holland and colleagues work on
the watery melting ice without gloves. In one of the closest towns,
Kulusuk, the morning temperature reached a shirtsleeve 52 degrees
Fahrenheit (10.7 degrees Celsius).
The
ice Holland is standing on is thousands of years old. It will be gone
within a year or two, adding yet more water to rising seas worldwide.
Summer
this year is hitting Greenland hard with record-shattering heat and
extreme melt. By the end of the summer, about 440 billion tons (400
billion metric tons) of ice — maybe more — will have melted or
calved off Greenland’s giant ice sheet, scientists estimate. That’s
enough water to flood Pennsylvania or the country of Greece about a
foot (35 centimeters) deep.
In
just the five days from July 31 to Aug. 3, more than 58 billion tons
(53 billion metric tons) melted from the surface. That’s over 40
billion tons more than the average for this time of year. And that 58
billion tons doesn’t even count the huge calving events or the warm
water eating away at the glaciers from below, which may be a huge
factor.
And
one of the places hit hardest this hot Greenland summer is here on
the southeastern edge of the giant frozen island: Helheim, one of
Greenland’s fastest-retreating glaciers, has shrunk about 6 miles
(10 kilometers) since scientists came here in 2005.
Several
scientists, such as NASA oceanographer Josh Willis, who is also in
Greenland, studying melting ice from above, said what’s happening
is a combination of man-made climate change and natural but weird
weather patterns. Glaciers here do shrink in the summer and grow in
the winter, but nothing like this year.
Summit
Station, a research camp nearly 2 miles high (3,200 meters) and far
north, warmed to above freezing twice this year for a record total of
16.5 hours. Before this year, that station was above zero for only
6.5 hours in 2012, once in 1889 and also in the Middle Ages.
This
year is coming near but not quite passing the extreme summer of 2012
— Greenland’s worst year in modern history for melting,
scientists report.
“If
you look at climate model projections, we can expect to see larger
areas of the ice sheet experiencing melt for longer durations of the
year and greater mass loss going forward,” said University of
Georgia ice scientist Tom Mote. “There’s every reason to believe
that years that look like this will become more common.”
A
NASA satellite found that Greenland’s ice sheet lost about 255
billion metric tons of ice a year between 2003 and 2016, with the
loss rate generally getting worse over that period. Nearly all of the
28 Greenland glaciers that Danish climate scientist Ruth Mottram
measured are retreating, especially Helheim.
At
Helheim, the ice, snow and water seem to go on and on, sandwiched by
bare dirt mountains that now show no signs of ice but get covered in
the winter. The only thing that gives a sense of scale is the
helicopter carrying Holland and his team. It’s dwarfed by the
landscape, an almost imperceptible red speck against the ice cliffs
where Helheim stops and its remnants begin.
Those
ice cliffs are somewhere between 225 feet (70 meters) and 328 feet
(100 meters) high. Just next to them are Helheim’s remnants — sea
ice, snow and icebergs — forming a mostly white expanse, with a
mishmash of shapes and textures. Frequently water pools amid that
white, glimmering a near-fluorescent blue that resembles windshield
wiper fluid or Kool-Aid.
As
pilot Martin Norregaard tries to land his helicopter on the broken-up
part of what used to be glacier — a mush called a melange — he
looks for ice specked with dirt, a sign that it’s firm enough for
the chopper to set down on. Pure white ice could conceal a deep
crevasse that leads to a cold and deadly plunge.
Holland
and team climb out to install radar and GPS to track the ice movement
and help explain why salty, warm, once-tropical water attacking the
glacier’s “underbelly” has been bubbling to the surface
“It
takes a really long time to grow an ice sheet, thousands and
thousands of years, but they can be broken up or destroyed quite
rapidly,” Holland said.
Holland,
like NASA’s Willis, suspects that warm, salty water that comes in
part from the Gulf Stream in North America is playing a bigger role
than previously thought in melting Greenland’s ice. And if that’s
the case, that’s probably bad news for the planet, because it means
faster and more melting and higher sea level rise. Willis said that
by the year 2100, Greenland alone could cause 3 or 4 feet (more than
1 meter) of sea level rise.
So
it’s crucial to know how much of a role the air above and the water
below play.
“What
we want for this is an ice sheet forecast,” Holland said.
In
this remote landscape, sound travels easily for miles. Every several
minutes there’s a faint rumbling that sounds like thunder, but it’s
not. It’s ice cracking.
In
tiny Kulusuk, about a 40-minute helicopter ride away, Mugu Utuaq says
the winter that used to last as much as 10 months when he was a boy
can now be as short as five months. That matters to him because as
the fourth-ranked dogsledder in Greenland, he has 23 dogs and needs
to race them.
They
can’t race in the summer, but they still have to eat. So Utuaq and
friends go whale hunting with rifles in small boats. If they succeed,
which this day they didn’t, the dogs can eat whale.
“People
are getting rid of their dogs because there’s no season,” said
Yewlin, who goes by one name. He used to run a sled dog team for
tourists at a hotel in neighboring Tasiilaq, but they no longer can
do that.
Yes,
the melting glaciers, less ice and warmer weather are noticeable and
much different from his childhood, said Kulusuk Mayor Justus Paulsen,
58. Sure, it means more fuel is needed for boats to get around, but
that’s OK, he said.
“We
like it because we like to have a summer,” Paulsen said.
But
Holland looks out at Helheim glacier from his base camp and sees the
bigger picture. And it’s not good, he said. Not for here. Not for
Earth as a whole.
“It’s
kind of nice to have a planet with glaciers around,” Holland said.
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