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NASA - Is a Sleeping Climate Giant Stirring in the Arctic?

NASA - Is a Sleeping Climate Giant Stirring in the Arctic? | 21st Century Innovative Technologies and Developments as also discoveries, curiosity ( insolite)... | Scoop.it
Frozen Arctic soils hold vast stores of carbon that may exacerbate global warming. A NASA Arctic campaign is looking for signals that may hold a key to Earth's climate future.
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Ultimately, the scientists hope their observations will indicate whether an irreversible permafrost tipping point may be near at hand. While scientists don't yet believe the Arctic has reached that tipping point, no one knows for sure. "We hope CARVE may be able to find that 'smoking gun,' if one exists," Miller said.

 

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Philippa King Rojo's curator insight, June 23, 2013 3:31 AM

The more it melts, the worse it gets...

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Rapid changes in the Arctic ecosystem

Rapid changes in the Arctic ecosystem | 21st Century Innovative Technologies and Developments as also discoveries, curiosity ( insolite)... | Scoop.it
Rapid changes in the Arctic ecosystem from surface to depth during the ice minimum in the summer of 2012.

 

We were able to demonstrate for the first time that the warming and the associated physical changes in the Central Arctic cause fast reactions in the entire ecosystem down to the deep sea", summarizes lead author Boetius. The deep sea has so far been seen as a relatively inert system affected by global warming only with a considerable temporal delay.


The fact that microbial decomposition processes fueled by the algal deposits can generate anoxic spots in the deep sea floor within one season alarms the researcher: "We do not know yet whether we have observed a one-time phenomenon or whether this high algal export will continue in the coming years." Current predictions by climate models assume that an ice-free summer could occur in the Arctic in the next decades.


===> Boetius and her team warn: "We still understand far too little about the function of the Arctic ecosystem and its biodiversity and productivity, to be able to estimate the consequences of the rapid sea-ice decline.<===



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===> Boetius and her team warn: "We still understand far too little about the function of the Arctic ecosystem and its biodiversity and productivity, to be able to estimate the consequences of the rapid sea-ice decline.<===


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