"The Last Hurrah for Sea-ice | Construction Details"Consider (albedo-loss) = (20-years of CO2 heat-gains from emissions), this only gets worse.
The mechanism to do this has two parts and end by heating the water directly, CO2 captures heat by reflection yet albedo-loss is direct thus understated if included in the models, most don't, no mention in Paris [not in on breakout work it may have been, stated by Prof. Wadhams & others].
Globally this now is 0.21-watts/m², locally it can be much more in the sea-ice due to methane clathrate releases happening all over in various emission rates, even if covered by ice it has CO2 transfer ability, a recent finding so ice doesn't cap releases.
Thus the Beaufort Sea has become the Beaufort Blob, the basal melting has taken its main area from 4-9 year-old multi-year ice to fast-ice, first year ice that's weak and salty with very little old ice left.
What's left is "rotten ice" a new form of sea-ice that was cored last fall, it's created by basal melting from the heat pool not able to release the gained heat back in fall. ["Assessing the Habitability and Physical Structure of Rotting First-year Arctic Sea Ice"; 6:39;
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That the context this the solution doesn't depend upon emissions control or carbon-taxes, it's a coastal civil geo-technical engineering to restrict the flow of Pacific water entering the Eastern Arctic Basin worth 10-TeraJoules in winter and double that in summer in heat-flux in.
This water remains on the surface and is colder-fresher from extensive runoff that creating a 1/2m of height in favor of the Pacific resulting in a 10^6m²/sec, 1-sverdrup of flow, and reduce that to about 2-Yukon River's worth from 4-5 Amazons in volume using a weir section with most of the closure a dam.
At first the route was Wales to Fairway Rock and across then studied it, current was too fast so it became closing at St. Lawrence Island as a far better situation to alter the mesoscale flow to reduce overall flow.
At the straits the velocity increase is too much, having the island is easy to build in spite of more distance, the benefit of the more southerly closing outweigh the gain in distance when the weir is added, that became a hydro-electric asset.
The evolving method of construction combines facets of the Dutch expertise along with Inca awareness of porosity and the American use of pipe pilings at an angle.
The Dutch were in shallow water to apply them more deeply the wicker weave that became plastic in rolls now is a wire-rope net of varying weave that unrolls bottom-up.
This becomes in a few hours a porous "dam" by raising the net on angled pipes quickly to shift the momentum of the inflow to the SE by creating an "equalization wave".
The drag from the net raises the height of the water on the Pacific side this restricts flow volume, that makes construction far easier all around.
Using the Dutch closure of the river for surges into Rotterdam by placing foundations with lower pipe & structure then adding upper sections after it's ready those tied with the winches to raise the net. ["Holland's Barriers to the Sea"; 44:20;
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The pipes need packing with sand & extra bracing for the closure, much of this can be removed after the change in impulse for the water-mass to the SE, the one north attenuated, for most of the mass it's "easier" for it to continue southeast:
Image of mesoscale current changes from only the Northwest Cape closure in place a critical first step to reduce flow to closing the southern part:
http://www.mallard-design.com/mdc2010/media/aleutian-currents2.jpgThus with that in place the circular weir section of the dam is built and when ready the dam sections left closed, the weir or sieve dam part is a hydro-electric bonus of the design concept along with sustaining marine migration & nutrient flow north.
Consider that as a plan to restore sea-ice by creating a refuge for it to form earlier and melt later instead of leading the melt path every year up into the Beaufort so it's first out, last in.
The feedback math demands a try to me, no way is incremental reduction of emissions going to do anything to stop sea-ice albedo increases, game-over my take what's yours?
Therefore, consider this "The Last Hurrah for Sea-ice".
How will the movie end?
Will the Beaufort Blob be chilled into defeat by a longer ice season?
Stay tuned ... People on betting on the Bluewater Event, this would alter the odds a bet.