Jakobshavn: why does the largest glacier in Greenland grow again (not good news)


Jakobshavn GlacierCopyright in the image

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The Jakobshavn glacier is very important for examining climate change.

The largest of the Greens is Green Jetobshavn glacier and the one that has been melted faster in the last 20 years.

Location mole home, situated in the west of the island and about 65 km long and nearly two kilometers thick, giving valuable information about climate change.

Loss of mass loss is one of the biggest people who has contributed to a rise in sea levels, which is why scientists have been looking for decades.

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Between 2003 and 2016, a glacier lost Jakobshavn 152 meters thickness

However, a new study is showing that a Unexpected turn

The information collected by the NASA (Greenland Oceans) NASA (OMG) message shows that the glacier is now falling slowly, thicker and advantage on land, rather than withdrawing as it happened a few years ago.

That also means Decreasedrhythm the one that is contributing to the increase in the sea level.

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In this aerial photograph you can see the Jakobshavn entering the Arctic Ocean

"At first we didn't believe it," said Ala Khazendar, a NASA researcher, in a recital.

"Indeed we have followed Jakobshavn as it has been in the last 20 years."

Looks good, isn't it? The melting of poles causes cause disasters. Disasters So a great freezing glacier looks optimistic.

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Khazendar and his colleagues, however, warn that although the Jakobshavn seems very good on first sight, it's just like passenger comfort.

Worse, it may be a signal that the glacier landscape is worse than previously thought.

Coldier waters

According to the OMG, the new vitality of the glacier is due to the fact that in 2016 the surrounding water currents began to turn. colder

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The temperatures of the seas affect the glaciers.

Currently, the water temperature close to the glacier it is lower than in 1980.

In 2016, water temperatures in the area fell by over 1.5 ºC and since 2013 the temperature had dropped by 0.5 ºC.

Thanks to these two reasons, the glacier He grew up approximately 30 meters between 2016 and 2017.

This exclusion is the result of a call North Atlantic Opening (NAO, for its acronym in English).

  • Conflict about resources (such as water) that climate change is already creating

The NAO is in a natural nature that causes Atlantic waters to cool and heat in circuits about 20 years.

Temporary leave

Everything shows that the NAO was like this with responsibility air-cooling of the Atlantic – and on the glacier -, in recent years.

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It's just a temporary disaster by Jakobshavn.

If that is, it means that it will cool down temporary and the water will return warmer when the bicycle changes again.

When this happens, it appears that Jakobshavn again appears narrow growth accelerated.

As Josh Willis, OMG researcher, says, "Jakobshavn includes break pattern of temporary climate, but in the long run, the seas heat up. '

  • “They are going to leave a big situation on our world: young people from all over the world want action against climate change.

The scientist warns that greenhouse gases it is a major responsibility of the human industry to warm up.

According to Willis with the CBS network, this research says that temperature of the ocean affected by reduction is glaciers. T much more previous expectations.

"So I see that the seas of the glaciers are so influential, it is bad news for the glacial series of Greenland, "Willis said in a report from NASA.

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