Treading gently: The scientists who leave little trace at the world's northernmost lab.
Scientists in the high Arctic are lifting their labs into the air to avoid damage from melting permafrost.
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
How do Arctic wildfires affect permafrost? Our new study finds no consistent pattern in lake size changes but increased variability in burned areas.
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
#Arctic #warming could pose a threat to America’s #security too: #Alaska may have new vulnerabilities to both #China & #Russia; changes in #ocean salinity & temp might interfere w/ #submarine detection systems; extremes of climate change, including #permafrost thaw in Russia, may drive #economic #instability, social #unrest, & territorial claims. [#Trump #Intelligence Agencies excluded #ClimateChange from the annual #ThreatAssessment report for the first time in decades — too *woke*]
Even 'safe' #climate scenarios may overshoot 2°C warming: New PIK study shows feedback loops like #permafrost thaw could amplify global heating throughout this millennium. Paris agreement only possible with very low emissions + low climate sensitivity.
https://www.pik-potsdam.de/en/news/latest-news/amplified-global-heating-risk-due-to-climate-and-carbon-cycle-feedbacks
"El permafrost acumula el doble de carbono que la atmósfera, pero el grado al cual el carbono congelado se derretirá y acelerará el cambio climático sigue siendo un punto de investigación científica."
Wie bedroht die globale Erwärmung das arktische #Meereis? Wird das #Nordpolarmeer im Sommer bald eisfrei sein? Etwas #Einsteigerwissen zur #Arktis und den dortigen Veränderungen durch den #Klimawandel. 
#Meereis #Erderwärmung #Umweltschutz #Eisschmelze #NASA #Klimaforschung #Permafrost #Treibhausgase
Bio:
Climate scientist at #DMI.
Coordinator of PolarPortal (lots of up-to-date Arctic data) and ROPEWALK (huge Danish logbook digitization project together with @rigsarkivet).
#ClimateChange in the Arctic, in particular #Greenland and in Africa, in particular #Tanzania.
Modelling subsea #permafrost.
Conveying science to the public: #IKFF #IKlimaforskernesFodspor #BestilEnForsker
with dual citizenship 
and 
and (occasionally) tooting in three languages.
!Paper alert!
We have published a new paper on ancient upper Middle Pleistocene #permafrost of the Ulakhan Sular Formation at the Adycha River in Eastern #siberia
Cc @rahmstorf
#ClimateCrisis:+2.7-3.1•C--Our children and grandchildren still alive in 2100 are so f*cked!
(1/2)
"The disappearance of #SeaIce and the melting of the #permafrost in northeast #Russia will lead to unpredictable results. Global #weather patterns will be drastically altered, while 
the melting of the permafrost will release gigatonnes of #CO₂ into the atmosphere almost overnight, that has been locked in the #ice...
A serious geologic issue is occurring in Canada and Alaska.
https://www.youtube.com/watch?v=Lxfpgqn6NOo
#environment #climatechange #river #permafrost #melting #emergency #canada #alaska #unitedstates #usa
Segment Anything Model Can Not Segment Anything - Assessing AI Foundation Model’s Generalizability In Permafrost Mapping
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https://doi.org/10.3390/rs16050797 <-- shared paper
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#GIS #spatial #mapping #remotesensing #foundationmodel #AI #artificialintelligence #zeroshot #segmentation #GeoAI #spatialanalysis #LargeLanguageModel #LLM #SAM #performance #metrics #permafrost #visionmodel #icewedge #Arctic #warming #climatechange #thawslumps #landform #terrainmapping #EuroCrops #agriculture
![maps/images - Results from knowledge-embedded learning with SAM. The results are those after fine-tuning. The images are the same as those in [other figure.]](https://files.techhub.social/media_attachments/files/113/953/076/805/098/822/original/ae0b32cb15f6783a.png "maps/images - Results from knowledge-embedded learning with SAM. The results are those after fine-tuning. The images are the same as those in [other figure.]")
As #permafrost melts into Alaska’s rivers, orange is the new blue: “a consequence of global warming as the melting permafrost released high levels of toxic metals into the river channels imparting the orange hues.” @GreenMatters #climatechange
https://www.greenmatters.com/pn/experts-reveal-why-alaskas-rivers-are-turning-bright-orange-and-its-more-serious-than-you-think
Groundwater in the Arctic is delivering more carbon into the ocean than was previously known
A relatively small amount of #groundwater trickling through #Alaska's #tundra is releasing huge quantities of #carbon into the #ocean, where it can contribute to #ClimateChange, according to new research out of The University of Texas at Austin.
As the tundra continues to thaw and the flow of submarine groundwater ratchets up, Demir said that the outflow of carbon from shore to sea could effectively make ocean surface waters a carbon source to the #atmosphere. The #CO2 released via groundwater could also contribute to ocean #acidification.
"The #Arctic coast is changing in front of our eyes," said Bayani Cardenas, a co-author of this study and professor at the Jackson School's Department of Earth and Planetary Sciences. "As #permafrost thaws, it turns into coastal and submarine #aquifers. Even without this thawing, our studies are among the first to directly show the existence of such aquifers."
https://phys.org/news/2025-01-groundwater-arctic-carbon-ocean-previously.html
Thanks to @cabinradio for this story. "The #NWT has some giant #carbon sinks – places within the landscape that lock up carbon like the #borealforest, #peatland and #permafrost. How we keep the carbon in those sinks is a big and increasingly important question, not just for the territory but for humanity as a whole." https://cabinradio.ca/220349/news/environment/wildfires/how-do-we-keep-the-nwts-huge-carbon-stores-out-of-the-air/
Permafrost Thaw Threatens Up To 3 Million People In The Arctic
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https://phys.org/news/2025-01-permafrost-threatens-million-people-arctic.html <-- shared technical article
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https://doi.org/10.1038/s43247-024-01883-w <-- shared paper
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#GIS #spatial #mapping #arctic #climatechange #permafrost #thaw #communities #impacts #humanimpacts #infrastructure #risk #hazard #northernhemisphere #global #threat #Sweden #greenland #alaska #yukon #russia #canada #norway #landuse #melting #ecosystems #livelihoods #firstnation #indigenous #inhabitants #population #cost #economics #policymaking #planning #management #spatialanalysis #adapation #transportation #supplies #waterquality #watersecurity #foodsecurity #disease #contaminants #multifactor #analysis #MFA #social #culture #cultural #transdisciplinary #ground #temperature #physicalprocesses #consequences #mobility #supplies #biogeochemical #water #hydrology #engineeringgeology #erosion #ecosystem #FATE
Oceanic Evasion Fuels Arctic Summertime Rebound Of Atmospheric Mercury And Drives Transport To Arctic Terrestrial Ecosystems
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https://doi.org/10.1038/s41467-025-56300-3 <-- shared paper
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#GIS #spatial #mapping #mercury #Hg #contamination #summerrebound #arctic #summertime #atmospheric #transport #contaminate #terrestrial #ecosystems #Hg0 #model #modeling #framework #spatialanalysis #spatiotemporal #concentrations #seaice #atmosphere #river #riverine #GDAS #GEOS #GEOSChem #MERRA2 #GTMM #global #NDVI #remotesensing #cycling #marine #ocean #water #hydrology #seawater #icemelt #anthropogenic #coast #coastal #tundra #permafrost #climatechange #evasion #vegetation #uptake #mitigation
After Millennia As CO₂ Sink, More Than One-Third Of Arctic-Boreal Region Is Now A Source
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https://phys.org/news/2025-01-millennia-arctic-boreal-region-source.html <-- shared technical article
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https://doi.org/10.1038/s41558-024-02234-5 <-- shared paper
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#GIS #spatial #mapping #arctic #boreal #carbonsink #carbonsource #permafrost #melting #tundra #wetlands #forest #co2 #CO₂ #spatialanalysis #climatechange #fire #wildfire #carbon #carbonfootprint #carbondioxide #sampling #monitoring #model #modeling #spatialanalysis #spatiotemporal
Greg Cocks 
