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22 maart 2018

Smeltende permafrost kan meer methaan uitstoten dan gedacht

Door Chris Mooney, The Washington Post, 19 maart 2018

For some time, scientists fearing the mass release of greenhouse gases from the carbon-rich, frozen soils of the Arctic have had at least one morsel of good news in their forecasts: They predicted most of the gas released would be carbon dioxide, which, though a greenhouse gas, drives warming [much] more slowly than [...] [methane].

[...] Research released [March 19th]  suggests that methane releases could be considerably more prevalent as Arctic permafrost thaws.

Later toegevoegd:

'The doomsayers were right': James Hansen’s 30-year-old climate warning rings true today
Door Joe Romm, Think / Climate Progress, 22 juni 2018

30 years after a brave scientist warned us about global warming, deniers run America.

We’re getting dangerously close to a climate death spiral, new study warns
Door Joe Romm, Think Progress, 9 augustus 2018


Why Trump’s reelection may push us over the cliff.

Florence is not the ‘new normal’. We’ve destroyed normal forever.
Door Joe Romm, Think Progress, 17 september 2018


If each new decade brings its own unique, ever-worsening climate disasters, there won't be any new norms for a long, long time.

Trump ‘poses the single greatest threat’ to our climate, bombshell UN report makes clear
Door Joe Romm, Climate Progress, 8 oktober 2018

[...] As the planet warms from 1.5°C to 2°C, the risks grow rapidly for some very dangerous tipping points, including the irreversible collapse of the West Antarctic ice sheet (which would raise sea levels 20 feet).
The report notes that “Limiting global warming to 1.5°C rather than 2°C is projected to prevent the thawing” of as much as 1 million square miles of permafrost. And that matters because the northern permafrost contains twice as much carbon as the atmosphere does today.

IPCC debunks climate deniers, proves humans responsible for all global warming since 1850
Door Joe Romm, Think Progress, 9 oktober 2018

Landmark study finds human-caused warming since 1850 is "indistinguishable from ... total observed warming."

UN Says Climate Genocide Is Coming. It’s Actually Worse Than That.
Door David Wallace-Wells, Intelligencer, 10 oktober 2018

Zie ook m'n blogs:
Permafost lijkt al grootschalig te smelten: omineus voor opwarming aarde
Ontdooiende permafrost oorzaak extreme opwarming aarde in het verleden
Smeltende permafrost vormt tikkende tijdbom
Smeltende permaforst klimaatramp

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