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22 maart 2018

Smeltende permafrost kan meer methaan uitstoten dan gedacht: potentieel fatale feedback-loop

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

Scientists issue dire warning in new study finding last year was likely the hottest on record
Door Joe Romm, Climate Progress, 11 januari 2019

"It is too late to stop serious global warming," warns scientist.

Ice loss from Antarctica has sextupled since the 1970s, new research finds
Door Chris Mooney en Brady Dennis, The Washington Post, 14 januari 2018

An larming study shows massive East Antarctic ice sheet already is a significant contributor to sea-level rise.

Study of Antarctic sea ice collapse warns of potential 10-foot sea rise [this century]
Door Joe Romm, Climate Progress, 15 januari 2019

The faster the ocean warms, the faster key Antarctic glaciers will disintegrate.

The most dangerous climate feedback loop is speeding up
Door Joe Romm, Climate Progress, 17 januari 2019

In Siberia, the carbon-rich permafrost warmed by 1.6°F [0.9°C] in just the last decade.

Scientists say Trump’s first 2 years have been fatal for a livable climate
Door Joe Romm, Climate Progress, 18 januari 2019

"Cause of death: the Trump presidency."

America's oil boom is terrible for the climate
Door Ivana Kottasová, CNN, 18 januari 2019

America's push for oil and gas supremacy could lead to a "climate catastrophe," a new report has warned.

Greenland’s Melting Ice Nears a ‘Tipping Point,’ Scientists Say
Door John Schwartz, The New York Times, 21 januari 2019

Greenland’s enormous ice sheet is melting at such an accelerated rate that it may have reached a “tipping point,” and could become a major factor in sea-level rise around the world within two decades [...].

As Climate Warms, Plants Will Absorb Less CO₂, Study Finds
Door Kendra Pierre-Louis, The New York Times, 23 januari 2019

'Dangerous' Antarctic glacier has a hole roughly two-thirds area of Manhattan, scientists warn
Door Brett Molina, USA Today, 31 januari 2019

[...] the glacier, about the size of Florida, holds enough ice to raise ocean levels another two feet if it completely melts. It also backstops other glaciers capable to raising sea levels another eight feet.

De zeespiegelstijging is een groter probleem dan we denken. En Nederland heeft geen plan B
Door Rolf Schuttenhelm, Vrij Nederland, 9 januari 2019

[...] De zeespiegelstijging is nog lang niet voorbij en gaat mogelijk een stuk sneller dan we eerder dachten. De grote vraag is of het Nederland zoals we dat nu kennen wel te handhaven is.

Kustlijn opgeven en het hogerop zoeken, dat is een plan B bij zeespiegelstijging
NOS via Vrij Nederland, door Heleen Ekker, 9 februari 2019

‘Devastating’ Arctic warming of 9-16°F now ‘locked in,’ UN researchers warn
Door Joe Romm, ThinkProgress / Climate Progress, 14 maart 2019

"A sleeping giant awakes" as carbon-rich permafrost starts to thaw.

Global warming is shrinking glaciers faster than thought
Door Seth Borenstein, Daily Journal,8 april 2019

In veel regio's vrijwel verdwenen rond 2100.

Last time CO2 levels were this high, sea levels were 60 feet higher and Antarctica had trees
Door Joe Romm, Climate Progress / Think Progress, 8 april 2019

Study finds the Earth's climate is highly sensitive to "relatively small variations in atmospheric CO2."

Permafrost collapse is accelerating carbon release
Door Merritt R. Turetskt et al., Nature, 30 april 2019

The sudden collapse of thawing soils in the Arctic might double the warming from greenhouse gases released from tundra, warn Merritt R. Turetsky and colleagues.

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
Smelt Zuidpool wordt rampzalig - nieuw onderzoek
IJskap Groenland smelt naar gevaarlijk kantelpunt
Hansen: aarde kan tweede Venus worden

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