#permafrost — Public Fediverse posts

RE: https://mstdn.ca/@Windspeaker/117208692427380234

PQP "oxidação" de rios!

"O degelo deste solo [o permafrost], causado pelo aquecimento global, gera erosão, libera resíduos tóxicos em lagoas e rios, ameaça liberar microrganismos perigosos, assim como potenciais emissões de carbono retidos no gelo há milhares de anos.

Esse solo congelado está presente sob grandes partes do Alasca, Canadá e Sibéria, onde comunidades indígenas vivem, trabalham e caçam há centenas de anos e sofrem lentamente os impactos do aumento da temperatura global.

O degelo da camada de permafrost remodela paisagens, desloca vilas inteiras e fragiliza habitats de animais."

https://reporterbrasil.org.br/2025/11/o-que-e-permafrost/
#permafrost #climate #crimatecrisis #indigenas #environment

A crise climática já move montanhas.
- bsoplvr
https://outraspalavras.net/terraeantropoceno/a-crise-climatica-ja-move-montanhas/
#TerraeAntropoceno #Altastemperaturas #Atmosfera #Capa #Chuvasextremas #Clima #Erupesvulcnicas #Geleiras #Humanidade #Mudanasclimticas #Oceano #Permafrost #Planeta #Precipitao #Terra

Challenges In The Use Of Local Data For Regional Scale Mapping Of C And N Stocks In The Continuous Permafrost Zone At The Yukon Coastal Plain | Heatwave Risks To Tipping Point Of Permafrost
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https://doi.org/10.5194/soil-12-113-2026 <-- shared paper
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https://doi.org/10.1038/s41558-026-02603-2 <-- shared paper
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https://www.theguardian.com/environment/2026/aug/20/tipping-points-heatwaves-wildfires-permafrost-climate-crisis <-- shared media article
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https://www.cbc.ca/news/canada/north/permafrost-slumps-herschel-island-qikiqtaruk-yukon-9.7168780 <-- shared media article
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[putting together two different ‘sorts’/focuses of research/reporting, but…]
H/T @gustaf Hugelius | Professor at Stockholm University
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“Permafrost soils are particularly vulnerable to climate change. To assess and improve estimations of carbon (C) and nitrogen (N) budgets it is necessary to accurately map soil carbon and nitrogen in the permafrost region. In particular, soil organic carbon (SOC) stocks have been predicted and mapped by many studies from local to pan-Arctic scales. Several studies have been carried out at the Canadian Beaufort Sea coast, though no regional maps of terrestrial carbon stocks based on spatial modelling has been conducted yet. This study combines available field data from the Canadian Yukon coastal plain and uses it to map regional SOC and N stocks using the machine learning algorithm random forest and environmental variables based on remote sensing data. [The authors] developed models using the data for the entire region and separate models for the coastal mainland area and Qikiqtaruk Herschel Island. Each model was used to map SOC and N stocks for its respective area. [They] assessed the performance of the different random forest models by using crossvalidation. [They] further assessed model results using the Area of Applicability (AOA) method and the quantile regression forest approach, comparing the results and discussing their implications within the context of both methods. [They] explore[d] local differences in soil properties and how soil data distribution across the region affects the accuracy of the predictions of SOC and N stocks..."
#permafrost #soils #geology #climatechange #temperature #thawing #melting #emissions #CO2 #methane #carbon #nitrogen #GIS #spatial #mapping #Qikiqtaruk #HerschelIsland #Yukon #Canada #soilorganiccarbon #SOC #arctic #cryosphere #BeaufortSea #coast #coastal #machinelearning #model #modeling #remotesensing #earthobservation #carbonstocks #island #mainland #spatialanalysis #scale

Siberia's growing methane threat could offset 20% of global methane reduction targets by 2050

The #Arctic is warming at an accelerating pace. As #permafrost thaws across vast areas and wildfires become more frequent, large amounts of #methane (CH4) are being released. Together, these changes are reshaping the region's #GreenhouseGas emissions and further intensifying climate change.

In a study published in Science on August 6, an international team led by Professor Liu Yi from the Institute of Atmospheric Physics #IAP of the Chinese Academy of Sciences investigated how #CH4 #emissions in #Siberia are evolving under #ClimateChange. The study showed how atmospheric circulation promotes #wildfire activity and #methanogenesis and thereby drives the recent sharp rise in CH4 emissions.

https://phys.org/news/2026-08-siberia-methane-threat-offset-global.html

#ClimateScience
#Cryosphere
#ClimateCrisis
#TippingPoint

Refined Modeling of Arctic Circumpolar Building Stock Increases Estimated Mid-Century Permafrost Degradation Damages
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https://doi.org/10.1029/2026EF008578 <-- shared paper
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https://www.thearcticinstitute.org/climate-change-geopolitics-monitoring-thawing-permafrost/ | https://www.thearcticinstitute.org/dwindling-arctic-sea-ice-impacts-permafrost-health/ <-- shared technical articles
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https://www.theguardian.com/cities/2016/oct/14/thawing-permafrost-destroying-arctic-cities-norilsk-russia <-- shared media article
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https://news.grida.no/new-map-shows-extent-of-permafrost-in-northern-hemisphere <-- shared technical article
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H/T @elias Manos
“Why the increase?
Our understanding of climate risk is only as good as our understanding of our exposure to hazards. The better we can account for what is at risk, the better we can measure risk in a changing world.
In this new study [link above], [they] investigate[d] how damage to the building stock across the Arctic, a key impact of permafrost degradation, is underestimated because of underdeveloped exposure information. With National Science Foundation (NSF) supercomputers and 400 TB of Vantor satellite imagery, [they] detected building footprints across the Arctic and classified their use types using deep learning models. Then, using Polar Geospatial Center's ArcticDEM digital surface model, [they] estimated the total floor space of each residential building. This move from 2D to 3D representation of the building stock was the largest contributor to increased building damage.
Properly estimating this consequence is necessary for understanding the near future of the Arctic economy. Knowing the magnitude of damages is critical for sustaining the communities and livelihoods of more than 5 million people that call the Arctic home. There are also much broader implications. With the Arctic continuing to emerge as a strategic centerpiece in global affairs and the global economy, accurately quantifying the physical shocks to its built environment will allow researchers to more effectively represent the Arctic in global climate economic models. More precise international policymaking will also be enabled by these improvements.
Ultimately, this research highlights a similar challenge in completely different regions of the world (e.g., Southeast Asia, Sub-Saharan Africa) where exposure is constantly evolving alongside rapid population growth and urbanization. Building stock information can quickly become outdated as these changes occur; satellite remote sensing and AI are key players in keeping up with these changes and supporting data-driven disaster risk management…”
#arctic #circumpolar #permafrost #model #modeling #spatialanalysis #spatiotemporal #GIS #spatial #mapping #melting #degradation #damage #cost #economics #risk #hazard #climaterisk #climatechange #remotesensing #HPC #earthobservation #ArcticDEM #buildingfootprint #LLM #AI #machinelearning #engineering #economy #buildingstock #community #policy #planning #geopolitics #risk #management @UConn Research

En Sibérie, avec la fonte du pergélisol, d’étranges cratères apparaissent dans la toundra. Un phénomène alarmant dont les conséquences pour le #climat pourraient être dramatiques.
#nature #biodiversite #rechauffementclimatique #ecologie #science #scientifiques #documentaire #Arte
#artique #permafrost #pergélisol

Les gouffres béants de l'Arctique | Documentaire | ARTE - YouTube
https://m.youtube.com/watch?v=Mp2ItCbYmhU

Permafrost Distribution, Degradation, And Potential Mass Movement Cascades In The Western Himalaya Using Machine Learning And Numerical Models
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https://doi.org/10.1038/s44304-026-00217-4 <-- shared paper
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https://doi.org/10.1038/s41598-025-22051-w <-- shared (earlier) paper
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https://doi.org/10.1080/2150704X.2025.2488532 <-- shared (earlier) paper
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H/T @abhinav Alangadan
“Can we develop a first-order understanding of permafrost degradation and glacial lakes exposed to degradation-induced mass movements in the Himalaya?
[The authors] tried to address this question. The study [first link above] integrates machine learning, statistical modeling, and numerical modeling to investigate high-resolution permafrost distribution, potential degradation, and associated mass-movement hazards in the Kinnaur district of Himachal Pradesh, India.
Using rock glaciers as proxies, [they] generated a high-resolution permafrost distribution using machine learning, while potential degradation zones were delineated using the 0°C isotherm as a first-order indicator. [They] further identified glacial lakes located near potentially degrading permafrost zones and reconstructed their bathymetry. A detailed scenario-based GLOF process-chain simulation was then carried out for Kashang Lake using r.avaflow and HEC-RAS.
[Their] results indicate that seven glacial lakes in #Kinnaur are located close to potentially degrading permafrost zones. The simulations further show that a potential GLOF from Kashang Lake could inundate critical downstream infrastructure, including nearly 11 km of National Highway 5…”
#permafrost #distribution #GIS #spatial #mapping #Himalayas #India #Kinnaur #HimachalPradesh #KashangLake #massmovement #engineeringgeology #machinelearning #AI #model #modeling #numericalmodel #glaciallakes #glaciet #glacial #glaciallakeoutburstflood #GLOF #cryosphere #geostatistics #rockglaciers #GeoAI #bathymetry #processchainsimulation #HECRAS #avaflow #risk #hazard #mitigation #riskassessment #infrastructure #HEP #publicsafety #downstream #avalanche

Fünfte Runde von Woche #Apokalypse bevorzugst du?
So, ihr hättet also gerne eine Vogonische intergalaktische Autobahn statt der Erde.

Mal gucken was ihr hiervon haltet.

#Bakterien vom Mond #Europa, #Viren aus dem #Permafrost oder durch #Massentierhaltung, das Ende der #Menschheit, weil es keine #Kinder mehr gibt, wie bei Children of Men.

A Review Of Evolving Remote Sensing And Automated Techniques In Rock Glacier Mapping
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https://doi.org/10.1016/j.earscirev.2026.105473 <-- shared paper
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#GIS #spatial #mapping #rockglacier #glaciers #permafrost #remotesensing #interferometry #earthobservation #spatialanalysis #machinelearning #AI #machinelearning #ML #deeplearning #CNN #metrics #inventory #earthobservation #GeoAI #geostatistics #InSAR #LiDAR #radar #satellite #review #literaturereview #geomorphology #geomorphometry #hydrology #geohazard #risk #hazard #engineeringgeology #biodiversity #permafrost #cryosphere #ice #snow #geology #assessment #survey #research
@Geospatial Research Institute Toi Hangarau | @University of Canterbury

RE: https://fediscience.org/@Ruth_Mottram/116250388094443741

For the morning team: We're looking for scientists excited to work at the cutting edge of Polar science with the latest high resolution climate models and Earth Observation data.
Funding support available for travel, accomodation + food costs covered

#Arctic #Antarctic #Polar #ClimateScience #ClimateModelling #EarthObservation #Climate #IceSheets #SeaIce #Permafrost

Okay, dann ist die nächste #Pandemie wohl von einer #Bakterie:

Ein 5.000 Jahre eingefrorenes #Bakterium aus einer rumänischen #Eishöhle zeigt Resistenz gegenüber zehn #Antibiotika.

Forschende fanden mehr als 100 #Resistenzgene, die beim Auftauen in die Umwelt gelangen und heutige Erreger stärken könnten.

https://www.scinexx.de/news/biowissen/5-000-jahre-eingefrorenes-bakterium-ist-ein-superkeim/

#Mikrobiologie #Eis #Permafrost #Superkeim #healthcare

5.000 Jahre eingefrorenes Bakterium ist ein „Superkeim“. Aufgetautes Höhlenbakterien erweist sich als immun gegen zehn moderne Antibiotika. #Antibiotika #Antibiotikaresistenz #multiresistent #Bakterien #Permafrost
https://www.scinexx.de/news/biowissen/5-000-jahre-eingefrorenes-bakterium-ist-ein-superkeim/

Rapid Mass Movements Triggered By An Atmospheric River In Disko Island, West Greenland
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https://doi.org/10.1002/esp.70201 <-- shared paper, 2023 event(s)
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https://doi.org/10.1007/s10346-022-01922-7 <-- shared paper, 2021 event(s)
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https://www.polarresearch.at/the-great-landslide-of-assapaat/ <-- shared technical article
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#landslide #massmovement #thawing #permafrost #extremewweather #cryosphere #Qeqertarsuaq #ArcticDEM #DiskoIsland #Greenland #ERA5 #CARRA #fluvial #pluvial #precipitation #rainfall #snow #ice #glacier #glacial #temperature #slushflow #GIS #spatial #mapping #geomorphology #elevation #slope #atmosphericriver #climate #weather #snowmelt #island #coast #coastal #damage #humanimpacts #infrastructure #arctic #monitoring #geohazard #risk #hazard #engineeringgeology #polar #change #remotesensing #spatialanalysis #spatiotemporal #earthobservation #debrisflow #remoteareas
#GreenlandEcosystemMonitoring | @europeanspaceagency | #CopernicusECMWF #Copernicus

40.000 Jahre alte Eiszeitmikroben wiedererweckt. Tiefgefrorene Mikroorganismen aus dem Permafrost lassen sich reanimieren. #Permafrost #Mikroben #Eiszeit #Wiedererweckt
https://www.scinexx.de/news/geowissen/40-000-jahre-alte-eiszeitmikroben-wiedererweckt/

Unos #microbios de 40.000 años #congelados en el #permafrost, pero estaban #vivos y pueden suponer una amenaza para la #Humanidad

https://www.larazon.es/ciencia/llevaba-46000-anos-congelado-pero-estaba-vivo-puede-suponer-amenaza-humanidad-b30m_2025101368eca175e81f41796945db6e.html

Das rasante Abschmelzen von #Gletschern gefährdet laut #UN die #Nahrungsversorgung und #Wasserversorgung von bis zu 2 Milliarden Menschen weltweit.

Besonders betroffen sind #Gebirgsregionen, deren #Landwirtschaft stark von #Schneeschmelze und #Gletscherwasser abhängt.

Die #Erderwärmung führt zu #Dürren, #Überflutungen und dem tauen von #Permafrost.

https://www.theguardian.com/environment/2025/mar/20/glacier-meltdown-risks-food-and-water-supply-of-2bn-people-says-un?CMP=Share_AndroidApp_Other

#Wasserkrise #Ernährungssicherheit #Klimakrise #Gletscherverlust

Eine Aufteilung von Projekten auf zwei oder mehrere "Teilprojekte" scheint die neue Masche zu sein um die notwendige #UVP (#Umweltverträglichkeitsprüfung) ganz oder zumindest teilweise zu erfüllen. Das scheint bei der #TIWAG immer öfter vorkommen.

Auftauender #Permafrost, Rückzug von Gletschern und immer instabilere Berghänge dank #Klimakrise bringt immer öfter Probleme oder Gefahren. #Stauseen im hochalpinen Gelände sind davon besonders betroffen.
Zu den Gefahren wird es womöglich zu einer Gutachterschlacht kommen.

Die Wasserableitung aus dem #Ötztal ist offenbar nach wie vor fix eingeplant. Das werden sie allerdings nie bekommen. Nie!

"Flutwelle ins #Kaunertal als Klima-Worst-Case"
https://tirol.orf.at/stories/3296414/

#Klimakatastrophe #KaunertalAusbauStoppen #KaunertalKraftwerkStoppen

Das Tauen der #Permafrostböden in der #Arktis gefährdet bis zu drei Millionen Menschen.

https://www.zeit.de/wissen/2025-01/klimawandel-permafrost-boden-arktis-gefahrenstoffe

#Erosion, #Erdrutsche und die Freisetzung von #Schadstoffe​n bedrohen #Infrastruktur, Wasser- und #Nahrungsversorgung.

Auch #Krankheitserreger aus dem gefrorenen Boden könnten gesundheitliche Risiken bergen. Diese Entwicklungen sind keine #Zukunftsprobleme, sondern bereits Realität.

#Klimawandel #Arktisforschung #Permafrost #Umweltkrise #Erderwärmung #Methan

Not good. https://www.theguardian.com/environment/2024/nov/21/canada-arctic-herschel-island-qikiqtaruk-climate-permafrost-tundra-ecology-aoe #Canada #permafrost #Qikiqtaruk #globalWarming

HT @northernlights

‘The land is tearing itself apart’: life on a collapsing #Arctic isle

On #Qikiqtaruk, off Canada, researchers at the frontier of #ClimateChange are seeing its rich ecology slide into the sea as #MeltingPermafrost ice leaves little behind

“It’s one thing to think about what the changes mean to us, but I can’t imagine the fear and stress the animals feel as everything changes so fast. We’re supposed to be the guardians of the land. But we’ve let them down.” - Richard Gordon.

By Leyland Cecco, on Herschel Island–Qikiqtaruk
November 21, 2024

"Armed with a fleet of drones and working closely with Indigenous Inuvialuit rangers, the team has revealed a rapid reshaping of the tundra with little precedent. As they race to understand what those changes might mean, a combination of rising seas, landslides and flooding mean the landscape is literally collapsing around them, making it harder to study an island that reflects the tumultuous future of the western Arctic."

https://www.theguardian.com/environment/2024/nov/21/canada-arctic-herschel-island-qikiqtaruk-climate-permafrost-tundra-ecology-aoe

#Inuvialuit #ClimateCatastrophe #Permafrost #Yukon #Canada #Landslides #Flooding #IndigenousCommunities #FirstNations #Qikiqtaruk #HerschelIsland

#Permafrost in der #Arktis taut auf, was zu riesigen Erdrutschen führt.

https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023JF007556

Diese #Erosionen können Millionen Kubikmeter Boden und Eis freisetzen und bedrohen #Infrastruktur sowie die #Umwelt. Ein #Forschungsteam hat nun entdeckt, dass das Eindringen von #Meerwasser und die Erwärmung des Bodens die #Erdrutsche fördert – sogar bis zu 300 Jahre nach ihrer Entstehung.

#Klimawandel #Umweltschutz #Erosion #Science #Erderwärmung #Dauerfrostboden

#Greenland is getting greener. That could have huge consequences for the world

By Angela Dewan, CNN
Published February 13, 2024

"Warmer air temperatures have driven #IceLoss, which has in turn raised land temperatures. That has caused the melting of #permafrost, a frozen layer just beneath the Earth’s surface and found in much of the #Arctic, and that melt releases planet-warming #CarbonDioxide and #methane, contributing to more #GlobalWarming. #PermafrostMelt is also causing #LandInstability, which could impact infrastructure and buildings.

"'We have seen signs that the loss of ice is triggering other reactions which will result in further loss of ice and further ‘greening’ of Greenland, where shrinking ice exposes bare rock that is then colonized by tundra and eventually shrub,' one of the report’s authors, Jonathan Carrivick, said in a press release. 'At the same time, water released from the melting ice is moving sediment and silt, and that eventually forms wetlands and fenlands.'

"The loss of ice is creating what’s known as a #FeedbackLoop. Snow and ice typically reflect the sun’s energy back into space, preventing excessive heating in parts of the Earth. But as ice disappears, those areas absorb more solar energy, raising land surface temperatures, which can cause further melt and other negative impacts.

"#IceMelt also increases the amount of water in lakes, where water absorbs more heat than snow, which increases land surface temperatures.

"Greenland has been warming at twice the global mean rate since the 1970s, and the study’s authors warn that more extreme temperatures in the future are likely.

"Greenland is the world’s biggest island and is mostly covered by ice and #glaciers. Around 57,000 people live in the country, which is an autonomous country within the Kingdom of Denmark. Much of the population is #indigenous and many people there rely on natural #ecosystems for their survival.

"Michael Grimes, the report’s lead author, said that the flow of sediments and nutrients into coastal waters was particularly problematic for #IndigenousCommunities that rely on fishing, as well as for hunters on other parts of the island.

"'These changes are critical, particularly for the indigenous populations whose traditional subsistence hunting practices rely on the stability of these delicate #ecosystems,' he said.

"'Moreover, the loss of ice mass in Greenland is a substantial contributor to #GlobalSeaLevelRise, a trend that poses significant challenges both now and in the future.'"

https://www.cnn.com/2024/02/13/climate/greenland-ice-loss-vegetation-climate-intl/index.html

Ontdekking van de eeuw: perfect bewaard wolharige neushoorn gevonden in siberische permafrost https://www.trendingtech.news/trending-news/2024/09/39057/ontdekking-van-de-eeuw-perfect-bewaard-wolharige-neushoorn-gevonden-in-siberische-permafrost #wolharige neushoorn #permafrost #Siberië #uitgestorven soorten #wetenschappelijke ontdekking #Trending #News #Nieuws

"Exceeding our emissions targets [temporarily] is known as a #ClimateOvershoot. It may lead to changes that won’t be reversible in our lifetime.

These changes include #SeaLevelRise, less functional ecosystems, higher risks of #SpeciesExtinction, and #glacier and #permafrost loss.

We are already seeing many of these changes."

https://www.csiro.au/en/news/All/Articles/2023/October/marine-impacts-climate-change

Versteckt im Permafrost: Studie nimmt 13 vergessene #Viren unter die Lupe (futurezone)
Im #Permafrost gefangene #Krankheitserreger sind nicht zwingend tot. Forschende haben sie im Labor reaktiviert. Frühere Untersuchungen hätten fälschlicherweise nahegelegt, „dass ‚Zombie-Viren‘ keine Bedrohung für die öffentliche Gesundheit darstellen“
@Albert
Aktueller Ticker von: #dasneueuniversum
(BAND 120 übrigens jetzt im Buchhandel und unter https://dasneueuniversum.com)
https://www.futurezone.de/science/article229472870/viren-aus-dem-permafrost-wie-gefaehrlich-sind-sie-wirklich.html?utm_source=twitter&utm_medium=social