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El Nino, La Nina Effects on Antarctic Ice Shelves


El Nino, La Nina Effects on Antarctic Ice Shelves11-01-2018 06:42
litesong
★★★★★
(2297)
Interesting 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 19:44
Tim the plumber
★★★★☆
(1319)
So the ice on land flows into the ocean at rates determined by ice floating around 500km away.

I call bull on that.
12-01-2018 02:06
Wake
★★★★★
(4031)
Tim the plumber wrote:
So the ice on land flows into the ocean at rates determined by ice floating around 500km away.

I call bull on that.


I have yet to get why melting arctic ice is any sort of problem. In 1660 a Portuguese sailed straight across the northwest passage from Japan to Portugal. Considering the sorts of ships they had at that time they could not do that with much ice in the way.
12-01-2018 02:23
litesong
★★★★★
(2297)
[b]Wake wrote: In 1660 a Portuguese sailed straight across the northwest passage from Japan to Portugal. Considering the sorts of ships they had at that time they could not do that with much ice in the way.
Might that be the Arctic northeast passage?




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