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Messages - JimboOmega

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Greenland and Arctic Circle / Where Does The Water Go?
« on: August 10, 2019, 12:05:25 AM »
On the DMI Greenland site, losses are often expressed in terms of Gigatons, which they explain as being equivalent to a cubic kilometer of water.  In a typical year, it seems like ~200 GT might melt, whereas in the worst years like this one, 300 or 400 GT might melt.

This is a tremendous amount , and it's very fresh water, assuming it melts and winds up in the surrounding waters. 300 Gt could cover the entire arctic ocean 2cm deep; or it could cover a million square kilometers 30 cm deep.

Does such a large impulse of fresh water actually impact the surrounding currents and oceans? In years where it's way more than climatology, what weird effects occur? Does the water go somewhere else (for instance, evaporating into the atmosphere)?  On some days, like recently, 10GT are removed in a day, do those pulses have impacts on other things in the cryosphere? Or are they mostly of concern only to the greenland ice sheet itself?

Arctic sea ice / Re: The 2018 melting season
« on: July 19, 2018, 09:39:52 PM »
For 2018 the thing that REALLY surprises me is the Bering sea.  The straight never fully froze over, and was open in February. The ice edge was so far back from what it normally is.  Many articles were written even outside of sea ice geek circles about how unusual it was.

But the ice edge has moved back so incredibly slowly in the melting season it's getting close to normal there. What the heck happened?  Where did all that extra insolation go?  Was that heat shuffled off somewhere else (like out?)  I was almost sure all those warm bering sea waters would cause all kinds of melt and it absolutely didn't materialize.

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