#uöäü1arctic
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umsonst.bsky.social
Wildfires increase subsidence to up to 20cm a year:

"Similarly to the sites in the western Canadian Archipelago, high ground ice content (87% by volume) and sparse vegetation contributed to extremely high interannual subsidence rates"

#climate #Arctic #uöäü1Arctic
Ground profiles. Permafrost with high ice content shows the highest rates of subsidence. Subsidence can double GHG emissions from thawing permafrost soils. Source: Thawing permafrost is subsiding in the Northern Hemisphere—review and perspectives https://iopscience.iop.org/article/10.1088/1748-9326/ada2ff?fbclid=IwY2xjawH4R_dleHRuA2FlbQIxMAABHWQI-m5BqROLJEwkOnFl7MNT3jy6NvohXYhUqNKZf4oFliPl25jRSlr8vA_aem_iYmIKBetwbQxD-FDNTspsg
January 18, 2025 at 8:59 AM
umsonst.bsky.social
New studies question if measurements near Florida can be used for Gulf Stream/AMOC strength

Further, the water inflow above Norway has increased the last decades but not its energy transport- more mixing with subpolar waters

AMOC collapse soon I do not see it...

#climate #uöäü1AMOC #uöäü1arctic
Unsere Erde - in Theorie, Beobachtungen und Projektionen
New studies question if measurements near Florida can be used for Gulf Stream/AMOC strength As it seems a signal from one location is not necessarily passed on to the north as each gyre transport...
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July 16, 2024 at 12:30 PM
umsonst.bsky.social
Sea ice heads in both Hemispheres towards a new minimum record at the same time

If there exist a bad omen in global warming then I would say this is one...

This is serious stuff!

www.facebook.com/taoist.attac...

#climate #uöäü1arctic #uöäü1seaice
Jan Umsonst
Sea ice heads in both Hemispheres towards a new minimum record at the same time If there exist a bad omen in global warming then I would say this is one... Comes along with an warming effect but...
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July 23, 2024 at 9:22 PM
umsonst.bsky.social
Next feedback rolling on:

The Arctic tundra is now a net source of carbon dioxide

#Arctic #climate #uöäü1Arctic #uöäü1feedbacks
Map shows there the Arctic tundras are becoming net carbon emitters - from the northern parts the net source regions start to move southward...
December 10, 2024 at 11:30 PM
umsonst.bsky.social
Next catastrophic model error - microbiological methane feedback of thawing Yedoma permafrost in the Arctic vastly underestimated - just 7-57-fold!

#climate #uöäü1feedbacks #uöäü1methane #uöäü1Arctic #uöäü1WTF
Unsere Erde - in Theorie, Beobachtungen und Projektionen
Next catastrophic model error - microbiological methane feedback of thawing Yedoma permafrost in the Arctic vastly underestimated - just 7-57-fold! Here the size of the problem: " Thinner and/or...
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July 28, 2024 at 11:13 PM
umsonst.bsky.social
As new feedbacks are coming in by the day here the next - soil-moisture cascade over the permafrost regions during summer - just another 0.25°C this century (large uncertainty)...

#Climate #uöäü1feedbacks #uöäü1Arctic #uöäü1soilmoisture
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July 12, 2024 at 4:51 PM
umsonst.bsky.social
As new feedbacks are coming in by the day here the next - soil-moisture cascade over the permafrost regions during summer - just another 0.25°C this century (large uncertainty)...

www.facebook.com/Erdsystemfor...

#climate #uöäü1feedbacks #uöäü1arctic
Unsere Erde - in Theorie, Beobachtungen und Projektionen
As new feedbacks are coming in by the day here the next - soil-moisture cascade over the permafrost regions during summer - just another 0.25°C this century (large uncertainty)... Soils dry out,...
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July 12, 2024 at 8:43 PM
umsonst.bsky.social
Extremes in the Arctic reach new magnitudes fast.

Just a series of extreme events needed that sea ice will be gone during one summer in the Arctic kicking of other feebacks...

"Emergence of Arctic Extremes"; www.mdpi.com/2225-1154/12...

#climate #Arctic #uöäü1Arctic #uöäü1SIC
Table showing the recent extreme events in 2022 to early 2024 - heatwaves, storms, rain, freezing rain, cold, wildfire, melt SST, extreme winds, snow or low salmon events.... Surface air trends in the Barents sea reaching 2-3°C from 2001 to 2020... Picture of Typhoon Merbok crashing into the coast of Alaska on 17 September 2022 Some storm descriptions: Ocean waves reached 15 m in the Bering Sea and storm surge water levels at Nome, Alaska, were 3.2 m, the largest since November 1974 (Figure 4) [19]. A 1000-mile shoreline of Alaska’s west coasts from Bristol Bay to beyond Bering Strait were impacted. Merbok formed in the northwest Pacific Ocean. There were extreme sea temperatures, with Merbok traveling over waters on the Russian side of the Bering Sea that were the warmest on record going back nearly 100 years. With warmer ocean water there is more evaporation moisture entering into the atmosphere that feeds the energy of the storm. Merbok was the strongest storm that has occurred in autumn. There have been stronger storms but they typically occur in October and November.
January 4, 2025 at 10:36 AM
umsonst.bsky.social
Just checked citations of geologic methane emissions in the Arctic:

Next study is out confirming at another site that we are now in the Russian Roulette range with the Arctic methane bomb!

Lots of geologic maps and profiles in the post

#climate #uöäü1methane #uöäü1Arctic #games #art
Unsere Erde - in Theorie, Beobachtungen und Projektionen
Just checked citations of geologic methane emissions in the Arctic: Next study is out confirming at another site that we are now in the Russian Roulette range with the Arctic methane bomb! They...
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July 8, 2024 at 7:14 PM
umsonst.bsky.social
The atlantification of the #Arctic Ocean is now progressing deep into the Arctic ocean - wow!

Atlantification: the northward inflow of anomalous waters and biota from the Atlantic into the polar basins

"Atlantification advances into the Amerasian Basin of the Arctic Ocean"

#Climate #uöäü1Arctic
Shows the advancement of atlantification into the Arctic Ocean interior. (A and B) Examples of Arctic sea-ice concentration (SIC, %) during the start of the freezing season from the early 2000s (A) and late 2010s (B). The absence of sea ice in the Siberian Arctic Ocean indicates that atlantification and pacification are swiftly moving into the Arctic Ocean’s interior along the edge of the Siberian shelf. Siberian Arctic Ocean is indicated by magenta boxes. (C and D) Composite 2002–2023 monthly mean time series of (C) water temperature and (D) the upper AW boundary (defined by the 0°C isotherm) from the mooring site MB1, eastern Eurasian Basin of the Arctic Ocean. White segments indicate missing data. (E) Mooring temperature records showing different stages of development of atlantification along the Siberian slope. Western moorings MB1, MB5, and MB6 show deep (>100 m) ventilation in winter season (schematically indicated by arrows), whereas eastern moorings MB7 and KAMS1 document shoaling of the AW but no deep winter ventilation (each panel’s isotherms, displayed as black lines, make these patterns easier to see). The boundary between these regions is marked by a magenta curve and A. The position of station P used in Fig. 4 is indicated by the red sign “*.” Source: "Atlantification advances into the Amerasian Basin of the Arctic Ocean"; https://www.science.org/doi/10.1126/sciadv.adq7580
March 1, 2025 at 3:36 PM
umsonst.bsky.social
Arctic sea ice could heed for new minimum this year - Arctic cyclone in the middle of the Arctic Ocean

Cyclones in the Arctic can cause the greatest sea ice losses. Just now one has moved into the central Arctic over the sea ice

www.facebook.com/Erdsystemfor...

#climate #uöäü1arctic
Unsere Erde - in Theorie, Beobachtungen und Projektionen
Arctic sea ice could heed for new minimum this year - Arctic cyclone in the middle of the Arctic Ocean Cyclones in the Arctic can cause the greatest sea ice losses. Just now one has moved into the.....
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July 16, 2024 at 3:17 PM
umsonst.bsky.social
Northern Hemisphere boreal forest growth rate due to CO2 and warmer temperatures compensated by soil carbon loss

In short: higher rates of surface NPP will only lead to larger fires emitting more CO2 - we have to face it: the north will burn!

#climate #uöäü1feedbacks #uöäü1Arctic
August 30, 2024 at 3:22 PM
umsonst.bsky.social
Nice video of Greenland melting from above and how the melt water affects glacier movements

Further, the process will become highly non-linear when the elevation where the ice melts reaches the flat parts of Greenland as the area will greatly expand fast

#climate #uöäü1Arctic #uöäü1SLR
What a Glacial River Reveals About the Greenland Ice Sheet
Five years after a NASA-funded field study returned to to set up camp once again in the melt zone of the Greenland Ice Sheet, a new study adds to the rich fi...
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August 4, 2024 at 8:07 PM
umsonst.bsky.social
Nice update on Alaska

Pole regions are the pulse of #global #warming...

uaf-accap.org/wp-content/u...

#climate #uöäü1Arctic #Arctic
December 4, 2024 at 5:14 PM
umsonst.bsky.social
Rotten fits!

Here an animation of Arctic sea ice:
x.com/kevpluck/sta...

#climate #uöäü1SIC #uöäü1Arctic
Sea ice concentration over wide areas down to 70-30% - rotten fits! In the central Arctic the ice concentration became so thin that it looks almost gone.
September 8, 2024 at 9:38 PM
umsonst.bsky.social
Greenland melt on 24 of July - the off voice used the word nuts - I heard it 😃

But the current situation is below the average - pictures attached

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Source of the pictures: nsidc.org/ice-sheets-t...

#climate #uöäü1arctic #uöäü1SLR
West Greenland, 20 July 2024: meltwater W. Greenland Ice Sheet, Alun Hubbard
"We received this amazing footage from Professor Alun Hubbard showing rare meltwater upwelling and moulins on the Western Greenland Ice Sheet yesterday after...
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August 6, 2024 at 5:49 PM
umsonst.bsky.social
New runoff data from Greenland - interesting increase the last years till 2021...

"A high-resolution pan-Arctic meltwater discharge dataset from 1950 to 2021"; essd.copernicus.org/preprints/es...

#climate #uöäü1greenland #uöäü1Arctic
Runoff from Greenland reached new heights in 2021 - wonder how the most recent years had been...
August 10, 2024 at 11:29 PM