#permafrost — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #permafrost, aggregated by home.social.
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https://www.europesays.com/ch/127981/ Not just Nepal: How climate change puts European Alps under threat of glacial retreat and rock fall #Alps #ClimateChange #EnvironmentalImpact #EuropeanAlps #GlacialRetreat #glaciers #MontBlanc #permafrost #RockFall
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Permafrost melt could cost $261 billion in infrastructure damages, study suggests https://phys.org/news/2026-09-permafrost-billion-infrastructure.html
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Ein KI-Modell des #AWI soll helfen, den globalen #Kohlenstoffkreislauf besser zu verstehen – von den tropischen #Regenwäldern bis zum tauenden #Permafrost.
Komplexe Rückkopplungen im #Erdsystem sollen besser erfasst und fundiertere Prognosen ermöglicht werden. Mit großen Datenmengen, etwa der #Erdfernerkundung und Biomasse-Infos, wird das Modell trainiert.
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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 -
Am #Matterhorn ist es nach anhaltender Hitze und einem schneearmen Winter zu einem massiven #Felsabbruch gekommen.
Augenzeugen-Videos zeigen, wie große Mengen Stein und Geröll als Staubwolke ins Tal stürzen. Das Ereignis verdeutlicht die Veränderungen in den #Alpen.
#Hitze #Klimawandel #Bergwandern #Erderwärmung #climatechange #Permafrost #Bergsturz
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Die Alpen bröseln mal wieder. Diesmal hat es das Matterhorn erwischt. 😥
https://www.n-tv.de/mediathek/videos/panorama/Videos-zeigen-massiven-Abbruch-am-Matterhorn-id31168849.html
#Alpen #Matterhorn #Permafrost #Felssturz -
Oha!
Alarm Rot am #Matterhorn
Riesiger #Felssturz an der Matterhorn-Südwand: Italienische Bergführer stoppen Besteigungen
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Rock Weathering Can Counteract River CO2 Emissions Induced By Permafrost Thaw
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https://doi.org/10.1038/s41586-026-10664-8 <-- shared paper
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H/T @aaron Bufe
“[The researchers] measured carbon emissions and water chemistry in 50 headwater rivers draining 780,000 km² of the Tibetan Plateau.
The rivers flow in landscapes underlain by continuous permafrost and landscapes in which the permafrost has retreated since the last glacial maximum. They collect[ed] organic carbon from soils and dissolved inorganic carbon that is fixed by rock-weathering.
Where the permafrost cover is continuous, rivers emit CO2 from degrading (permafrost) soil carbon. Weathering reactions in these catchments are relatively slow.
In landscapes with (almost) no permafrost, carbon fluxes from weathering are faster than CO2 emissions from rivers.
Thus, as permafrost landscapes transition to landscapes without permafrost cover, chemical weathering reactions may play an ever more important role in riverine carbon cycling.
Interestingly, weathering can affect the carbon cycle in different ways. Where sulfide minerals are present, weathering reactions can emit CO2. Where silicate minerals dominate, weathering draws down CO2 from the atmosphere…”
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“Climate-induced permafrost thaw unlocks large stores of organic carbon that are mineralized and emitted as carbon dioxide (CO2) from rivers to the atmosphere. Concurrently, warming and permafrost thaw can increase mineral weathering rates, thus affecting the release and sequestration of inorganic carbon. Yet how these biological and geological carbon cycles interact and jointly affect CO2 dynamics (emission compared with drawdown) in permafrost rivers remains unknown. Here [they] combine[d] CO2 emissions, organic and inorganic solute concentrations, dual carbon isotopes (δ13C–Δ14C) and geochemical modelling to infer how permafrost thaw may affect river biogeochemistry over decades to centuries across the Qinghai–Tibet Plateau. Leveraging a gradient of thermal permafrost degradation, we find that river CO2 emissions decline, whereas solute fluxes from rock weathering increase with decreasing permafrost cover. Across this region, net CO2 drawdown fluxes from rock weathering are about 35% of river CO2 emissions, varying from around 15% in catchments with continuous permafrost to more than 100% in catchments with discontinuous or isolated permafrost. Thus, carbon fluxes from chemical weathering may become increasingly important with ongoing permafrost thaw, potentially even outpacing river CO2 emissions. [Their] findings disentangle the interplay between biological and geological carbon fluxes that are important for the cryosphere and the global carbon cycle…”
#permafrost #melting #thaw #climatechange #warming #Tibet #TibetanPlateau #Qinghai #water #hydrology #carbonemissions #CO2 #emissions #waterchemistry #waterquality #cryosphere #sediment #sedimentation #weathering #rock #carbon #river #riverine #carboncyling #geochemistry #biology #geology #soil -
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 -
1-Apr-2026
A Wisconsin-sized chunk of #Alaska's #permafrost is thawing; #Arctic and global #climate may never be the same
When permafrost is perma-lost, the global #carbonCycle is altered and coastal #ecosystems are affectedhttps://www.eurekalert.org/news-releases/1121619 #science #environment #ecology #climateCatastrophe
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The Arctic Coastal Erosion Model - Overview, Developments, and Calibration at Drew Point, Alaska
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https://doi.org/10.22541/essoar.174086594.45589925/v1 <-- shared paper
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#Alaska #permafrost #coastalerosion #Arctic #permafrost #modeling #climateresilience #coast #coastal #erosion #sloughing #coastline #polaramplification #climatechange #ArcticCoastalErosion #ACE #model #modeling #oceanographic #atmospheric #oceanic #finiteelement #thermoabrasion #storm #stormsurge #fieldwork #calibration #geomechanics #sediments #geochemistry
#SandiaNationalLaboratories #USGS -
Permafrost Formation In A Meandering River Floodplain
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https://doi.org/10.1029/2024AV001175 <-- shared paper
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“... KEY POINTS:
• River meandering resets permafrost development and vegetation succession by eroding old floodplain areas and depositing new land
• On the Koyukuk River, permafrost rapidly forms in new deposits, but it takes over 4 Kyr to develop to its full areal extent of 85%
• The rate of permafrost formation is likely linked to vegetation succession on younger and overbank deposition on older floodplain areas…”
#water #hydrology #permafrost #development #research #Alaska #river #stream #watercourse #channel #meandering #vegetation #spatialanalysis #erosion #floodplain #overbank #deposition #sedimentation #KoyukukRiver #riverdynamics #climate #climatechange #Arctic #environment #landform #geomorphology #dating #spatiotemporal #model #modeling #network #GIS #spatial #mapping -
"Der Hochvogel reagiert sehr empfindlich auf Starkniederschläge. Wenn es zwei, drei Tage stark regnet, dann bewegt sich der Hauptspalt des Hochvogels fünf- bis sechsmal so schnell wie normal. "
"Wir sind doch erstaunt, wie der Hochvogel auf Starkniederschläge reagiert, was wir bisher nicht vermutet hatten. Auch Blitzschläge ungeahnten Ausmaßes registrieren wir über unsere Messgeräte dort oben. Diese zeigen uns auch, verglichen mit anderen Aufzeichnungen, dass sich diese Starkregen in den letzten hundert Jahren verdoppelt haben. Damit steigt auch die Gefahr des Hochvogel-Abbruchs."
Gespräch von 2022 mit Experte Krautblatter über den bevorstehenden Bergsturz am Hochvogel
https://muenchen.t-online.de/region/muenchen/id_100056882/allgaeu-2600-meter-berg-hochvogel-droht-ins-tal-zu-stuerzen-wegen-riesen-spalts-10402626.htmlMit Permafrost hat es beim Hochvogel im Allgäu aber nichts zu tun, dafür ist er zu niedrig. Der einzige deutsche Berg mit Permafrost ist die Zugspitze.
#Klimawandel #Permafrost #Starkregen #Bergsturz -
Glaziologe Wilfried Haeberli: "Die Häufung der Stürze, die ja seit den achtziger Jahren des letzten Jahrhunderts zunimmt, hat nur eine Erklärung: die Veränderung des Klimas. Denn von den Hauptfaktoren her liefern weder die Topografie noch das Gestein ein Argument."
https://www.woz.ch/2523/zukunft-der-alpen/die-schwaechung-der-berge-ist-irreversibel/!V80CRV4X87Q8
#Klimakrise #Permafrost #Bergsturz #Blatten -
New Coasts Emerging From The Retreat Of Northern Hemisphere Marine-Terminating Glaciers In The Twenty-First Century
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https://doi.org/10.1038/s41558-025-02282-5 <-- shared paper
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#GIS #spatial #mapping #geography #climatechange #glaciers #glacial #melting #retreating #ctyosphere #spatialanalysis #spatiotemporal #deglaciation #coast #coastal #geomorphology # geomorphometry #proglacial #coastline #geology #NorthernHemisphere #Greenland #paraglacial #sediment #sedimentation #dynamic #retreating #ecosystems #Arctic #islands #new #climate #rock #permafrost #geodiversity #delta #moraine #beach #juvenile #snow #ice #calving -
Kinematic Evolution Of A Large Paraglacial Landslide In The Barry Arm Fjord Of Alaska
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https://doi.org/10.1029/2023JF007119 <-- shared paper
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https://doi.org/10.5066/P9EUCGJQ <-- shared technical article
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https://www.sciencebase.gov/catalogMaps/mapping/ows/5fff561ed34e592d8671ee85?service=wms&request=getcapabilities&version=1.3.0 <-- shared web mapping service
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#GIS #spatial #mapping #massmovement #landslide #engineeringgeology #remotesensing #sitespecific #LiDAR #iFSAR #paraglacial #kinematics #mapping #monitoring #spatialanalysis #spatiotemporal #fedscience #risk #hazard #glacier #retreat #climatechange #Alaska #BarryArm #fjord #hazardassessment #tsunami #wave #BarryGlacier #change #sensors #fieldwork #surveillance #melting #permafrost #Whittier #geophysics #geology #Alaska #geomorphometry #deglaciating
@USGS -
Melting Permafrost Releasing Mercury Into Alaska's Yukon River
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https://thehill.com/policy/energy-environment/4829536-climate-change-mercury-permafrost-arctic-study/ <-- shared media article
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https://doi.org/10.1088/1748-9326/ad536e <-- shared paper
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#GIS #spatial #mapping #mercury #Hg #Alaska #Yukon #YukonRiver #climatechange #waterquality #water #hydrology #BeringSea #permafrost #melting #risk #hazard #ecosystems #habitat #fisheries #metal #heavymetals #mercurybomb #pollutants #arctic #boreal #plants #vegetation #soil #geomorphology #YukonRiverBasin -
The #Batagay or #Batagaika crater in Siberia often referred to as the "Doorway to the Underworld" or the
"Gateway to Hell" is a
#permafrost #megaslump in Yakutia, Russia.Dimensions vary by source, but the site covers around 192 acres (78 hectares)
and stretches two thirds of a mile (one kilometer) in length.Logged of trees in the 1960s, its walls reach a depth of around 180 feet (55 meters)
and expose 650,000 years of geologic history.Since first spotted in the 1960s by surveillance satellites, the crater has grownfrom an insignificant gully to a massive depression at an accelerating rate.
According to Sarah Cadieux, Sr. Lecturer and Associate Director of Environmental Science of Rensselaer Polytechnic Institute,
the crater area increased by almost three times from 1991 to 2018.The Batagaika crater isn’t a crater at all,
it’s a #retrogressive #thaw #slump, a type of terrain called #thermokarst that occurs in areas underlain by permafrost.No longer cooled by forest cover, the slump has become a self-sustaining #feedback #loop,
a portion of the ecosystem which has tipped into a new state.This is not an isolated case, but rather a rapidly growing problem in the Arctic as
💥it warms three to four times the rate of the rest of the planet since 1979.Called Arctic or polar #amplification, this phenomenon is a well established fact measured by instruments,
confirmed in climate computer models,
and reinforced by paleoclimate records.Powerful anecdotal evidence occurred in the scorching heatwave of 2020 that saw the Russian town of Verkhoyansk
which lies north of the Arctic Circle hit a stunning 38° C (100.4° F) on June 20.2020 also saw overall temperatures in the Siberian basin rise to nearly 11° F above normal,
shocking scientists and releasing #ancient #methane
not from ancient organic material,
but from #limestone.Elevated methane in wetlands was expected, but not from #outgassing #rock.
A year later in 2021 Europe’s climate change service Copernicus Sentinel satellites recorded 118° F (48° C) in the Sakha Republic of Arctic Siberia,
and records continue to fall with temperatures over 100° F in 2023 as reported by CNN. -
" #PacmanViren im #Permafrost Die Seuche aus dem #Eis ist für #Menschen ungefährlich - #vorerst "
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"Kryosphären-Bericht: Deutlich weniger Schnee und Eis in Österreich"
https://science.orf.at/stories/3222889/"Die aus den Messungen belegten markanten Veränderungen der Kryosphäre würden die enorme Temperaturzunahme in den Alpen seit ca. 1980 widerspiegeln."
"Die seit den 1880er-Jahren um rund zwei Grad Celsius gestiegene mittlere Jahrestemperatur in Österreich führe zum Auftauen des Permafrosts. Dessen zuvor stabilisierende Wirkung auf Grate, Schutthalden oder Felswände lasse bereits bei Erwärmung deutlich nach „und ist aktuell nur mehr deutlich reduziert gegeben“, heißt es in dem Bericht."
"Das fehlende Eis [auf Seen] hat nicht nur Auswirkungen auf den Tourismus, sondern auch auf wichtige Ökosystemprozesse in Seen."
"Geplant ist künftig eine jährliche Erscheinungsweise der Analyse, die heuer vom Klimaministerium gefördert wurde. Allerdings fehle ein Förderinstrument für ein regelmäßiges Kryosphären-Monitoring in Österreich, heißt es in dem Bericht." #IWüsGorNetWissenNetSoGenau
https://unipub.uni-graz.at/obvugrveroeff/download/pdf/9405860?originalFilename=true
#eis #schnee #gletscher #osterreich #kryoMon #permafrost #alpen #berge #seen #klimaministerium #kryosphare #monitoring #Schneedecke #schneeschmelze #gletscherschmelze #Gletscherrückgang #klimakatastrophe #muren #hochwasser #felssturze #oaw #oeaw #InterdisziplinäreGebirgsforschung
