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What’s the deal with Antarctica and the Arctic?

What’s the deal with Antarctica and the Arctic? | Research Capacity-Building in Africa | Scoop.it

"Perhaps the biggest misunderstanding is that the Arctic and Antarctic are similar. One’s in the north and the other is in the south; but other than that, they’re the same, right? No, this couldn’t be more wrong. These polar opposites are literally polar opposites.
For starters, the Arctic is a small, shallow ocean surrounded by land: Eurasia, Greenland, Canada and the United States. It’s only about 5 ½ million square miles, which is five times smaller than the Atlantic and 11 times smaller than the Pacific. Antarctica, on the other hand, is a continent surrounded by the entire Southern Ocean.

This may seem like no big deal, but it makes all the difference in the world. It takes a lot of energy to change water temperature compared to what it takes to change land temperature, which means Arctic seawater isn’t as cold as the continental ice sheet covering Antarctica. So, the Arctic sea ice (frozen sea water) is about 10 feet thick, whereas the Antarctic ice sheet (compacted freshwater ice) is over a mile thick."

 

Tags: physical, weather and climate, Arctic, Antarctica.


Via Seth Dixon
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Ruth Reynolds's curator insight, November 12, 2014 9:05 PM

It would be nice to keep both

Javier Antonio Bellina's curator insight, November 17, 2014 2:51 PM

If we are

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The world's megacities that are sinking 10 times faster than water levels are rising

The world's megacities that are sinking 10 times faster than water levels are rising | Research Capacity-Building in Africa | Scoop.it
Scientists have issued a new warning to the world’s coastal megacities that the threat from subsiding land is a more immediate problem than rising sea levels caused by global warming.


A new paper from the Deltares Research Institute in the Netherlands published in April identified regions of the globe where the ground level is falling 10 times faster than water levels are rising - with human activity often to blame.

In Jakarta, Indonesia’s largest city, the population has grown from around half a million in the 1930s to just under 10 million today, with heavily populated areas dropping by as much as six and a half feet as groundwater is pumped up from the Earth to drink.

The same practice led to Tokyo’s ground level falling by two meters before new restrictions were introduced, and in Venice, this sort of extraction has only compounded the effects of natural subsidence caused by long-term geological processes.


Tags: coastal, climate change, urban, megacities, water, environment, urban ecology.


Via Seth Dixon
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Adilson Camacho's curator insight, August 2, 2014 12:32 AM

Perception!

Matt Evan Dobbie's curator insight, August 2, 2014 6:55 PM

Huge problem when combined with sea level rise

MsPerry's curator insight, August 12, 2014 6:53 PM

APHG-U7