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Snowfall Increases, Antarctica


Snowfall Increases, Antarctica07-01-2018 14:59
litesong
★★★★★
(2297)
"Recent" historic snowfall increases in West Queen Maude Land, Eastern Antarctica are discovered from 500 foot long ice core studies.
https://www.washingtonpost.com/news/energy-environment/wp/2018/01/03/large-antarctic-snowfall-increases-could-counter-sea-level-rise-scientists-say/?utm_term=.86b9bda163c6
These studies show even more snowfall level increases in the study area than have been surmised in the past. In 2002 science papers indicated that Antarctic snowfall increases could occur due to bio-sphere warming, since cold regimes at both poles generally have less precipitation & snowfall (at times, even designated as desert) than other world regions. These early papers were confirmed in 2005 & now these recent studies reinforce such increases. More studies of other Antarctic regions would help consolidate the West Queen Maude Land studies.
Edited on 07-01-2018 15:00
07-01-2018 18:22
Tim the plumber
★★★★☆
(1147)
Oh, so Antarctica will get more ice on it.

So much for sea level rise then.
11-01-2018 06:04
litesong
★★★★★
(2297)
Tim the plumber wrote: Oh, so Antarctica will get more ice on it.
Snow is not ice. As the science articles from 2002 on, have indicated AGW is increasing snowfall.... at least in the region studied. It is reasonable that other regions should receive more snowfall, too. But, AGW also subtracts ice from the undersides of Antarctic Ice Shelves, as the following science article indicates of changes in Antarctic snow & ice due to two cyclical weather patterns:
https://www.sciencedaily.com/releases/2018/01/180108121618.htm
From the article:
After further analysis of the data, the scientists found that although a strong El Niño changes wind patterns in West Antarctica in a way that promotes flow of warm ocean waters towards the ice shelves to increase melting from below, it also increases snowfall particularly along the Amundsen Sea sector. The team then needed to determine the contribution of the two effects. Is the atmosphere adding more mass than the ocean is taking away or is it the other way around?

"We found out that the ocean ends up winning in terms of mass. Changes in mass, rather than height, control how the ice shelves and associated glaciers flow into the ocean," Paolo said.
11-01-2018 08:57
Into the Night
★★★★★
(5558)
litesong wrote:
Tim the plumber wrote: Oh, so Antarctica will get more ice on it.
Snow is not ice.


Snow is not ice??? What is it? Dandruff?


The Parrot Killer
11-01-2018 18:46
Tim the plumber
★★★★☆
(1147)
litesong wrote:
Tim the plumber wrote: Oh, so Antarctica will get more ice on it.
Snow is not ice. As the science articles from 2002 on, have indicated AGW is increasing snowfall.... at least in the region studied. It is reasonable that other regions should receive more snowfall, too. But, AGW also subtracts ice from the undersides of Antarctic Ice Shelves, as the following science article indicates of changes in Antarctic snow & ice due to two cyclical weather patterns:
https://www.sciencedaily.com/releases/2018/01/180108121618.htm
From the article:
After further analysis of the data, the scientists found that although a strong El Niño changes wind patterns in West Antarctica in a way that promotes flow of warm ocean waters towards the ice shelves to increase melting from below, it also increases snowfall particularly along the Amundsen Sea sector. The team then needed to determine the contribution of the two effects. Is the atmosphere adding more mass than the ocean is taking away or is it the other way around?

"We found out that the ocean ends up winning in terms of mass. Changes in mass, rather than height, control how the ice shelves and associated glaciers flow into the ocean," Paolo said.


The floating stuff does not matter.

The landed ice's flow rate will not be significantly effected by the floating stuff being 3km thick 500 km away or 2.8km thick.
12-01-2018 02:26
litesong
★★★★★
(2297)
"AGW denier liar whiner tipped the leakey plunger" puffed:The landed ice's flow rate will not be significantly effected by the floating stuff being 3km thick 500 km away or 2.8km thick.
From another thread:
http://www.nationalgeographic.com/magazine/2017/07/antarctica-sea-level-rise-climate-change/
From the article:
Great fjords are below the Antarctic Ice Sheets & Shelves that flow into the Antarctic waters. Initially dug out by ancient Ice Sheet glaciers, bigger even than the present ones, these fjords are deep next to Antarctic shorelines & get shallower as the Ice Sheet glaciers proceeded into the Oceans, melting & getting smaller.

This process also occurred in the great fjords of Norway & to a lesser extent the straits & fjords of western mainland Canada, east of the inside passage between the mainland & Vancouver Island. Most recently, similar great fjords along the shorelines of Greenland have been discovered underneath the Ice Sheets & Shelves, worked with the same type monstrous glaciers of the past sliding off Greenland.

After the great Antarctic Ice Sheets reduced, more millenia past, with grounding islands & sub-surface rock structures bearing up & supporting Ice Shelves acted as brakes to continued but reduced scale glacier flows that also advanced into the seas & Oceans around Antarctica.
In the present era, along with warming air & lands, vast warming currents initially impinged on those Antarctic islands & sub-surface grounding structures. Great inverted ice canyons have been melted out on the underside of Antarctic Ice Shelves. So much weight has been lost, that regions of the Antarctic Ice Shelves are now floating, & no longer grounded. Now, more warming is occurring beyond the grounding islands & sub-surface rock, because the fjords ARE DEEPER AS THEY PROCEED FURTHER INLAND. Intruding warm waters now eat & melt Ice Shelves, not only around the grounding structures, but deep into the ice covered, but ever deep fjords.
Melting, unseen by surface observers, is being recorded & verified by underwater robotic craft that explore the underbellies(ever thinning underbellies) of Antarctic Ice Shelves.
As these Ice Shelves decrease in strength & weight, Antarctic Ice Sheet flow will increase in massflow & speed, to enter the seas & oceans.
Edited on 12-01-2018 02:35
12-01-2018 10:54
Tim the plumber
★★★★☆
(1147)
^
If the ice shelf melts from below significantly it will reduce in altitude as the stuff above the sea level will not be supported by the boyancy of the stuff below the water line. It is easy to detect. No need to have a billion dollar project to send robot subs under it.

That these fjords have this profile of deep trenches up to the open ocean where the sea level will become shallow is hardly news. It isthe result of the trench being calved out when the sea level was lower during the last ice age. Since then the point at which the glacier melted in contact with the open sea has been submerged. The result is that the very shallow fjord entrace is now only shallow. The glacier may well be floating within the fjord now.

The shallow entrance, especially if mostly filled by floating ice, will stop most of the currents wandering into the fjord and mean that the process of melting from elow is very slow.

If the ice is floating it does not effect sea level.

The force to move the ice shelf, floating as it does, is tiny compare with the required force to move a 3km thick ice sheet which is grounded. The prospect of significant ice melt in antarctica is a wet dream of the doom mongers. Nothing else.
12-01-2018 21:56
litesong
★★★★★
(2297)
"old sick silly sleepy sleezy slimy AGW denier liar whiner tipped the leakey plunger" puffed:The force to move the ice shelf, floating as it does....
At times, some ice shelves ground on rock & at other times, float, each which changes the flow rate of land ice onto the ice shelf. These intermittent grounding pulses have been detected as far as 100 kilometers up flow.
Edited on 12-01-2018 22:00




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