>>The region was once thought of as the ‘last ice area’ because scientists thought it would outlive other ice

The demise of Greenland’s ice sheet seems to be accelerating with the oldest and thickest ice melting twice as fast as young ice, according to a new study in the American Geophysical Union’s (AGU’s) journal Geophysical Research Letters.

For years, researchers thought that the Greenland’s ice sheet, the world’s second-largest reservoir of fresh water, would be the so-called “last ice area” or the final place to lose the presence of year-round ice. Ice in the ocean north of Greenland is older and thicker than anywhere else in the Arctic, but it actually appears to be the most vulnerable, according to the new study. In fact, it’s “declining twice as fast as ice in the rest of the Arctic.”

The report comes in the wake of an earlier study published in the Proceedings of the National Academy of Sciences, which revealed that Greenland’s massive ice sheets are melting twice as fast as they were just a decade ago. As the Greenland ice sheet melts, it has caused the sea level to rise a quarter inch in just the past eight years. Since Greenland has enough ice to raise global sea levels by 25 feet, the new melt rate estimation outlines an alarming prospect and one that is not expected to slow down.<<

https://www.smithsonianmag.com/smart-news/greenlands-oldest-ice-melting-fast-180973560/

Because it is the oldest ice, would this prove that it is a bloody long time since the warming last occurred?

“declining twice as fast as ice in the rest of the Arctic.”

That’s odd.

roughbarked said:

Because it is the oldest ice, would this prove that it is a bloody long time since the warming last occurred?

Probably, although this warming period is starting from a much higher level than other more recent paleo warm periods.

buffy said:

“declining twice as fast as ice in the rest of the Arctic.”

That’s odd.

Maybe more open water and exposed rocks to absorb heat.

Counterintuitive

PermeateFree said:

>>The region was once thought of as the ‘last ice area’ because scientists thought it would outlive other ice

The demise of Greenland’s ice sheet seems to be accelerating with the oldest and thickest ice melting twice as fast as young ice, according to a new study in the American Geophysical Union’s (AGU’s) journal Geophysical Research Letters.

For years, researchers thought that the Greenland’s ice sheet, the world’s second-largest reservoir of fresh water, would be the so-called “last ice area” or the final place to lose the presence of year-round ice. Ice in the ocean north of Greenland is older and thicker than anywhere else in the Arctic, but it actually appears to be the most vulnerable, according to the new study. In fact, it’s “declining twice as fast as ice in the rest of the Arctic.”

The report comes in the wake of an earlier study published in the Proceedings of the National Academy of Sciences, which revealed that Greenland’s massive ice sheets are melting twice as fast as they were just a decade ago. As the Greenland ice sheet melts, it has caused the sea level to rise a quarter inch in just the past eight years. Since Greenland has enough ice to raise global sea levels by 25 feet, the new melt rate estimation outlines an alarming prospect and one that is not expected to slow down.<<

https://www.smithsonianmag.com/smart-news/greenlands-oldest-ice-melting-fast-180973560/

> The demise of Greenland’s ice sheet seems to be accelerating

Old data, the year of fastest melting was 2012. It’s been slower since then.

The demise of Greenland’s ice sheet seems to be accelerating with the oldest and thickest ice melting twice as fast as young ice, according to a new study in the American Geophysical Union’s (AGU’s) journal Geophysical Research Letters.

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL083722
Spatiotemporal Variability of Sea Ice in the Arctic’s Last Ice Area
First published: 15 October 2019

mollwollfumble said:

PermeateFree said:

>>The region was once thought of as the ‘last ice area’ because scientists thought it would outlive other ice

The demise of Greenland’s ice sheet seems to be accelerating with the oldest and thickest ice melting twice as fast as young ice, according to a new study in the American Geophysical Union’s (AGU’s) journal Geophysical Research Letters.

For years, researchers thought that the Greenland’s ice sheet, the world’s second-largest reservoir of fresh water, would be the so-called “last ice area” or the final place to lose the presence of year-round ice. Ice in the ocean north of Greenland is older and thicker than anywhere else in the Arctic, but it actually appears to be the most vulnerable, according to the new study. In fact, it’s “declining twice as fast as ice in the rest of the Arctic.”

The report comes in the wake of an earlier study published in the Proceedings of the National Academy of Sciences, which revealed that Greenland’s massive ice sheets are melting twice as fast as they were just a decade ago. As the Greenland ice sheet melts, it has caused the sea level to rise a quarter inch in just the past eight years. Since Greenland has enough ice to raise global sea levels by 25 feet, the new melt rate estimation outlines an alarming prospect and one that is not expected to slow down.<<

https://www.smithsonianmag.com/smart-news/greenlands-oldest-ice-melting-fast-180973560/

> The demise of Greenland’s ice sheet seems to be accelerating

Old data, the year of fastest melting was 2012. It’s been slower since then.

Just where are your references, other than your unbounded instinctive knowledge?

This has been a blockbuster year for Greenland ice melts

Greenland’s ice is melting at the rate scientists thought would be our worst-case scenario in 2070

dv said:

This has been a blockbuster year for Greenland ice melts

Greenland’s ice is melting at the rate scientists thought would be our worst-case scenario in 2070

The greater ice loss in 2012 was influenced in no small part by the calving of a 120 square kilometre iceberg from the Petermann glacier in northern Greenland, which although creating a peak (now surpassed) does not represent less ice melting in the years between 2012 and 2019.

Moulins

Although building glaciers is very slow, taking thousands of years, once an ice sheet starts to collapse, its demise can be spectacularly rapid. Once large scale glacial collapse begins, it is impractical to stop and as more ice moves from glaciers on land into the ocean, it raises sea levels.

The Jakobshavn Glacier is Greenland’s fastest moving glacier and major contributor to the mass balance of the continental ice sheet. Starting in late 2000, following a period of slowing down in the mid 1990s, the glacier showed significant acceleration and nearly doubled its discharge of ice. Researchers found the glacier’s sudden speed-up also coincides with very rapid thinning, indicating loss of ice of up to 15 meters (49 feet) in thickness per year after 1997. Recent NASA funded research in the Antarctic Peninsula showed similar increases in glacier flow following the Larson B ice shelf break-up.

PermeateFree said:

mollwollfumble said:

PermeateFree said:

>>The region was once thought of as the ‘last ice area’ because scientists thought it would outlive other ice

The demise of Greenland’s ice sheet seems to be accelerating with the oldest and thickest ice melting twice as fast as young ice, according to a new study in the American Geophysical Union’s (AGU’s) journal Geophysical Research Letters.

For years, researchers thought that the Greenland’s ice sheet, the world’s second-largest reservoir of fresh water, would be the so-called “last ice area” or the final place to lose the presence of year-round ice. Ice in the ocean north of Greenland is older and thicker than anywhere else in the Arctic, but it actually appears to be the most vulnerable, according to the new study. In fact, it’s “declining twice as fast as ice in the rest of the Arctic.”

The report comes in the wake of an earlier study published in the Proceedings of the National Academy of Sciences, which revealed that Greenland’s massive ice sheets are melting twice as fast as they were just a decade ago. As the Greenland ice sheet melts, it has caused the sea level to rise a quarter inch in just the past eight years. Since Greenland has enough ice to raise global sea levels by 25 feet, the new melt rate estimation outlines an alarming prospect and one that is not expected to slow down.<<

https://www.smithsonianmag.com/smart-news/greenlands-oldest-ice-melting-fast-180973560/

> The demise of Greenland’s ice sheet seems to be accelerating

Old data, the year of fastest melting was 2012. It’s been slower since then.

Just where are your references, other than your unbounded instinctive knowledge?

I can’t keep track of everything I read. You want me to find it again, OK.

The http://nsidc.org/greenland-today/ website.

Hmm. Looks like I’m a bit out of date. I haven’t looked at this since the start of August this year. August was a bad time this year.

mollwollfumble said:

PermeateFree said:

mollwollfumble said:

> The demise of Greenland’s ice sheet seems to be accelerating

Old data, the year of fastest melting was 2012. It’s been slower since then.

Just where are your references, other than your unbounded instinctive knowledge?

I can’t keep track of everything I read. You want me to find it again, OK.

The http://nsidc.org/greenland-today/ website.

Hmm. Looks like I’m a bit out of date. I haven’t looked at this since the start of August this year. August was a bad time this year.

Shame you don’t read all posts. Ice melt rates are governed by several factors giving statistically large variations, like the calving of large icebergs.

From: PermeateFree
ID: 1462460
Subject: re: Greenland’s Oldest Ice Is Melting ‘Twice as Fast as the Rest of the Arctic’

dv said:

This has been a blockbuster year for Greenland ice melts Greenland’s ice is melting at the rate scientists thought would be our worst-case scenario in 2070

The greater ice loss in 2012 was influenced in no small part by the calving of a 120 square kilometre iceberg from the Petermann glacier in northern Greenland, which although creating a peak (now surpassed) does not represent less ice melting in the years between 2012 and 2019.